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1.
Rev. Ciênc. Plur ; 9(2): 332613, 31 ago. 2023. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1510095

ABSTRACT

Introdução:A reabilitação protética implantosuportada de espaços edêntulos na região do sorriso é um desafio para o cirurgião-dentista. Para obtenção da estética em próteses unitárias sobre implante é necessário considerar aspectos como o correto posicionamento do implante e sua harmonia com os tecidos moles e duros. Objetivo:relatar o resultado estético e funcional de um tratamento com auxílio de coroa provisória associada ao condicionamento gengival na reabilitação final com coroa unitária implantossuportada. Relato de caso clínico: Paciente MJFA, 36 anos, sexo feminino, compareceu à clínica de Prótese Dentária do Departamento de Odontologia/UFRN queixando-se de trauma dentário com perda do elemento dentário 15 e necessidade de "ficar com sorriso mais bonito". Após instalação de implante com conexão cônica e período de osseointegração, foi realizada a confecção da coroa provisória sobre implante e iniciada sessões de condicionamento gengival por meio de acréscimos com resina acrílica, utilizando a técnica de pressão gradual sob a margem gengival. Observou-se uma melhora no tecido periimplantar e um perfil de emergência adequado. O caso possui proservação de 3 anos. Conclusões:a realização de condicionamento gengival previamente a prótese final é uma etapa importante para alcançar umareabilitação com característicasestéticas e funcionais semelhantes à de dentes naturais (AU).


Introduction:Implant-supported prosthetic rehabilitation of edentulous spaces in the smile areais a challenge for dental surgeons. To achieve pleasing esthetics in single implant prostheses it is necessary to consider aspects such as the correct positioning of the implant and its harmony with the soft and hard tissues.Objective:to report the esthetic and functional results of a treatment with the aid of a provisional crown associated with gingival conditioning in the final rehabilitation with a single implant-supported crown.Clinical case report:Patient MJFA, 36 years old, female, attended the Prosthodonticsclinic of the Department of Dentistry/UFRN complaining of dental trauma with loss of tooth 15 and the need to "havea more beautiful smile". Afterinstalling an implant with a conical connection and a period of osseointegration, a temporary crown was made on the implant and gingival conditioning sessions were initiatedby means of acrylic resin augmentations, using the gradual pressure technique under the gingival margin. An improvement in the peri-implant tissue and an adequate emergenceprofile were observed. The case has a 3-year follow-up period.Conclusions:performing gingival conditioning prior to the final prosthesis is an important step in achieving rehabilitation with esthetic and functional characteristics similar to those of natural teeth (AU).


Introducción: La rehabilitación protésica implantosoportada de espacios edéntulos en el áreade la sonrisa es un desafío para el cirujano dentista. Para conseguir una buena estética en las prótesis unitarias sobre implanteses necesario tener en cuentaaspectos como el posicionamiento correctodel implante y su armonía con los tejidos blandos y duros.Objetivo: informar losresultadosestéticosy funcionalesde un tratamiento con ayuda de coronas provisionales asociado al acondicionamiento gingival en la rehabilitación final con corona única implantosoportada.Relato de caso clínico: Lapaciente MJFA, 36 años, sexo femenino, se dirigióa la clínica de Prostodonciadel Departamento de Odontología/UFRN quejándose de un traumatismodental con pérdida del diente 15 y de la necesidad de "tener una sonrisa más bonita". Después de la colocación de un implante con conexión cónica y de un período de osteointegración, se realizó una corona provisional sobre el implante y se iniciaron sesiones de acondicionamiento gingival con aumentos de resina acrílica, utilizando la técnica de presión gradual bajo el margen gingival. Se observó una mejora del tejido periimplantario y un perfil de emergencia adecuado. El caso tiene un seguimiento de 3 años. Conclusiones: el acondicionamiento gingival previo a la prótesis definitiva es una etapaimportante para conseguiruna rehabilitación con características estéticas y funcionales similares a las de los dientes naturales (AU).


Subject(s)
Humans , Female , Adult , Tissue Conditioning, Dental/instrumentation , Dental Implants , Esthetics, Dental , Mouth Rehabilitation , Dental Prosthesis, Implant-Supported , Cone-Beam Computed Tomography/instrumentation
2.
Braz. dent. sci ; 26(2): 1-11, 2023. ilus, tab
Article in English | LILACS, BBO | ID: biblio-1436387

ABSTRACT

Objective: The rehabilitation choice for the edentulous patients usually lies between the fixed and removable prosthetic options. The treatment decisions are affected by many factors where complications and maintenance needs are both considered crucial factors, in addition to the cost effectiveness of the chosen treatment. Material and Methods: This study was applied on 44 edentulous patients, where 22 patient for each group were enrolled in the outpatient clinic of prosthodontics, Cairo University as per a set of eligibility criteria. Four inter-foraminal implants were installed for all eligible participants. Three months later, healing abutments were used for soft tissue preparation prior to the fabrication of the final prosthesis. A prosthetic treatment option was then randomly allocated to obtain two equal groups via computer generated randomization program; Group. A received telescopic implant overdentures, and Group. B received screw retained dentures. All Complications (Screw loosening or fracture, tooth or denture base fracture and mucositis) were reported after overdenture insertion along the follow up period (1, 6, 9 and 12 months respectively). Results: The frequency of the screw loosening for hybrid overdentures where (59.1%) compared to (27.3%) of telescopic prosthesis at 12 months follow up period (p=0.035), mucositis reporting at 6m interval had shown the highest frequency in both groups (Group A (54.5%), Group B (81.8%), (p=0.045), all other reported complications that lack statistical significance either within the same group or between both groups at different time intervals. Conclusion: Both treatment modalities; telescopic implant overdenture and hybrid fixed screw-retained are reliable for restoring the completely edentulous arches, the decision whether to make a fixed or removable implant denture shall be guided with the patient preference together with the dentist assessment in relation (AU)


Objetivo: A escolha da reabilitação para pacientes edêntulos geralmente recai entre próteses fixas e removíveis. As decisões de tratamento são afetadas por muitos fatores onde as complicações e as necessidades de manutenção são consideradas critérios cruciais, além do custo-efetividade do tratamento escolhido. Material e Métodos: Este estudo foi aplicado em 44 pacientes edêntulos, onde 22 pacientes para cada grupo foram matriculados no ambulatório de prótese dentária da Universidade do Cairo de acordo com um conjunto de critérios de elegibilidade. Quatro implantes interforaminais foram instalados para todos os participantes elegíveis. Três meses depois, pilares de cicatrização foram utilizados para preparação dos tecidos moles antes da fabricação da prótese final. Uma opção de tratamento protético foi então alocada aleatoriamente para obter dois grupos iguais por meio de andomização gerada através programa de computador. O Grupo A recebeu overdentures de implantes telescópicos e o Grupo B recebeu dentaduras fixas parafusadas sobre os implantes. Todas as complicações (afrouxamento ou fratura do parafuso, fratura da base do dente ou da prótese e mucosite) foram relatadas após a inserção da overdentures ao longo do período de acompanhamento (1, 6, 9 e 12 meses, respectivamente). Resultados: A frequência do afrouxamento do parafuso para Overdentures híbridas (59,1%) em comparação com (27,3%) da prótese telescópica no período de acompanhamento de 12 meses (p=0,035), o relato de mucosite no intervalo de 6 meses mostrou a maior frequência em ambos os grupos (Grupo A (54,5%), Grupo B (81,8%), p=0,045, todas as outras complicações relatadas foram sem significância estatística dentro do mesmo grupo ou entre os dois grupos em intervalos de tempo diferentes. Conclusão: Ambas as modalidades de tratamento; overdentures sobre implantes telescópicos e próteses híbridas fixas parafusadas são confiáveis para reabilitar as arcadas completamente edêntulas. A decisão de fazer uma prótese fixa ou removível sobre implantes deve ser guiada pela preferência do paciente juntamente com a avaliação do dentista em relação ao estado geral do paciente e sua saúde bucal. (AU)


Subject(s)
Humans , Dental Prosthesis Design , Dental Prosthesis , Dental Prosthesis, Implant-Supported , Denture, Overlay
3.
Braz. j. oral sci ; 22: e238152, Jan.-Dec. 2023. ilus
Article in English | LILACS, BBO | ID: biblio-1437694

ABSTRACT

Aim: This study evaluated the influence of a wide diameter on extra-short dental implant stress distribution as a retainer for single implant-supported crowns in the atrophic mandible posterior region under axial and oblique load. Methods: Four 3D digital casts of an atrophic mandible, with a single implant-retained crown with a 3:1 crown-to-implant ratio, were created for finite element analysis. The implant diameter used was either 4 mm (regular) or 6 mm (wide), both with 5 mm length. A 200 N axial or 30º oblique load was applied to the mandibular right first molar occlusal surface. The equivalent von Mises stress was recorded for the abutment and implant, minimum principal stress, and maximum shear stress for cortical and cancellous bone. Results: Oblique load increased the stress in all components when compared to axial load. Wide diameter implants showed a decrease of von Mises stress around 40% in both load directions at the implant, and an increase of at least 3.6% at the abutment. Wide diameter implants exhibited better results for cancellous bone in both angulations. However, in the cortical bone, the minimum principal stress was at least 66% greater for wide than regular diameter implants, and the maximum shear stress was more than 100% greater. Conclusion: Extra-short dental implants with wide diameter result in better biomechanical behavior for the implant, but the implications of a potential risk of overloading the cortical bone and bone loss over time, mainly under oblique load, should be investigated


Subject(s)
Dental Implants , Jaw, Edentulous, Partially , Dental Prosthesis, Implant-Supported , Finite Element Analysis
4.
Braz. j. oral sci ; 22: e238354, Jan.-Dec. 2023. ilus
Article in English | LILACS, BBO | ID: biblio-1442830

ABSTRACT

Aim: To analyze the accuracy of extraoral systems (Ceramill Map400+, AutoScan-DS200+, and E2) in full implantprosthetic rehabilitation three-dimensionally. Methods: A metallic edentulous maxilla with four implants was digitalized by a contact scanner (MDX-40 - Roland, control) and used as a control image to compare with other images generated by three laboratory scanners (10 samples per group). Letters identified all the four components: A and D angled 45º, and B and C parallel. The BioCAD software exported the images (.STL) to compare and verify deviations of the analogs on the X, Y, and Z axes. The nonparametric Kruskal-Wallis test and the two-way ANOVA on ranks with a post hoc Tukey test analyzed the data with 5% significance. Results: No statistical differences were observed in the accuracy between the extraoral scanners (p=0.0806). However, when analyzing only the components, component D was more accurate when scanned with Ceramill Map400+ compared with AutoScan DS200+ (p<0.001) and with E2 (p=0.002). Conclusions: All extraoral systems assessed showed digitalization accuracy but with more deviations in angled implants. The Ceramill Map400+ scanner showed the best results for the digital impression of a complete arch


Subject(s)
Dental Implants , Dental Impression Technique , Dental Prosthesis , Dental Prosthesis, Implant-Supported
5.
West China Journal of Stomatology ; (6): 341-349, 2023.
Article in English | WPRIM | ID: wpr-981132

ABSTRACT

OBJECTIVES@#This study aimed to evaluate the long-term clinical efficacy of simple taper retentive implants in the posterior dental area after immediate implantation for 5-7 years.@*METHODS@#Selected from January 2015 to December 2017 in the Fourth Affiliated Hospital of Nanchang University dental clinic line tooth area immediately after the implant prosthesis, a total of 38 patients, 53 implants, were deep into (bone under 2 mm or higher) and the upper structure was repaired. In addition, after the completion of tracking observation of 60-90 months, the implant surrounding bone health was recorded and analyzed.@*RESULTS@#After 5-7 years of follow-up, 1 of the 53 implants failed to fall out, and the implant retention rate was 98.1%. The amount of bone resorption in the proximal and distal margins 5-7 years after implant restoration was (0.16±0.94) mm and (-0.01±1.29) mm, respectively, and the difference in bone height between the proximal and distal margins of the implant and the immediate post-restoration period was not statistically significant (P>0.05). No statistically significant differences were found in the effects of periodontitis, implant site inflammation, and smoking on peri-implant marginal bone resorption (P>0.05).@*CONCLUSIONS@#The single taper-retained implant broadens the indications for immediate implant placement in the posterior region, and its deep sub-osseous placement (≥2 mm below the bone) avoids to a certain extent the disturbance of the implant by external stimuli and the exposure of the cervical abutment of the implant, with the good long-term stability of the marginal bone around the implant.


Subject(s)
Humans , Dental Implantation, Endosseous , Dental Implants , Immediate Dental Implant Loading , Follow-Up Studies , Dental Implants, Single-Tooth , Alveolar Bone Loss/surgery , Treatment Outcome , Dental Prosthesis, Implant-Supported , Dental Restoration Failure
6.
Natal; s.n; 25 nov. 2022. 81 p. tab, ilus.
Thesis in Portuguese | LILACS, BBO | ID: biblio-1532247

ABSTRACT

A estética e estabilidade dos tecidos moles e ósseo ao redor do implante é um componente crítico para o sucesso do implante em longo prazo e pode ser influenciado por fatores como os tipos de conexões protéticas. OBJETIVO: Comparar o comportamento do tecido peri-implantar em reabilitação com coroas implantossuportadas cimentadas na região estética usando um pilar protético pré-fabricado em titânio (GT) e um pilar protético personalizado em zircônia (GZ). METODOLOGIA: Neste estudo longitudinal do tipo ensaio clínico controlado, cego e não randomizado, 30 coroas cimentadas sobre implantes dentários unitários em região estética anterior foram alocados sequencialmente: 15 reabilitados sobre um sistema de implante com pilar protético pré-fabricado em titânio (GT) e 15 sobre um sistema de implantes com pilar protético personalizado em zircônia (GZ). O comportamento do tecido peri-implantar foi avaliado em T0 (início do condicionamento tecidual), T1 (fim do condicionamento tecidual), T2 (7 dias após cimentação final), T3 (6 meses após cimentação final). Índice de Placa Visível (IPV), Índice de Sangramento Gengival (ISG), Sangramento a sondagem (SS), Profundidade de Sondagem (PS), Relação Altura/Largura da papila interdental (AP/LP), Faixa de Mucosa Ceratinizada (MC), Espessura gengival (EG), Fenótipo periodontal (FP), Recessão Gengival (RG), distância radiográfica da crista óssea para o ponto de contato e Pink Esthetic Score (PES) foram avaliados. A análise dos dados foi realizada utilizando os seguintes testes estatísticos: Friedman, Mann-Whitney e Qui- quadrado/Exato de Fisher, com nível de significância de 5%. RESULTADOS: Não houve diferenças estatísticas significativas entre os grupos para nenhum dos parâmetros clínicos periodontais nos tempos avaliados (p>0,05). Entretanto, a análise intragrupo mostrou uma redução estatística no IPV e ISG entre T1 e T2 apenas para o GZ (p<0,05). Houve diminuição significativa entre os tempos T0 e T3 para o parâmetro de EG (1,67 mm - 1,47 mm no GT; 1,70 mm -1,47mm no GZ) e aumento da razão AP/LP (0,56 ­ 0,80 no GT; 0,70-0,83 no GZ) em ambos os grupos (p<;0.001). O PES também aumentou significativamente para ambos os grupos (9 ­ 12 no GT; 7 ­ 12 no GZ) de T0 para T1, mantendo-se elevado nos demais tempos analisados. CONLUSÃO: Os resultados mostraram que os pilares protéticos utilizados não impactaram em diferenças nas variáveis clínicas e estética relacionadas ao comportamento dos tecidos periimplantares ao longo do tempo. Sendo assim, a decisão pela seleção dos componentes para a reabilitação em região estética poderia se basear em aspectos como o custo, fluxo e tempo de trabalho (AU).


The esthetics and stability of the soft tissue and bone around the implant is a critical component to the long-term success of the implant and can be influenced by factors such as the type of prosthetic connections. OBJECTIVE: To compare the behavior of the periimplant tissue of single implant-supported crowns in the anterior aesthetic area using prefabricated titanium prosthetic abutments (GT) and customized zirconia prosthetic abutments (GZ). METHODOLOGY: In this controlled, blinded, non- randomized clinical trial, 30 single cemented crown over anterior implants were sequentially allocated: 15 implants rehabilitated on implant system with a prefabricated titanium prosthetic abutment (GT) and 15 on implant system with customized zirconia prosthetic abutment (GZ). The behavior of the peri- implant tissue was evaluated at T0 (beginning of tissue conditioning), T1 (end of tissue conditioning), T2 (7 days after final cementation), T3 (6 months after final cementation). Visible Plaque Index (VPI), Gingival Bleeding Index (GBI), Bleeding on Probing (BoP), Probing Depth (PD), Interdental Papilla Height/Width Ratio (PH/PW), Keratinized Mucosa Width (KM), Gingival Thickness (PT), Periodontal Phenotype (PF), Gingival Recession (GR), radiographic distance from the bone crest to the contact point and Pink Esthetic Score (PES) were registered. The results were analyzed with the following statistical tests: Friedman, Mann-Whitney and Chi- square/Fisher; Exact test with a significance level of 5%. RESULTS: No statistically significant differences were observed between groups for any of the clinical parameters in any, (p>0.05). However, intragroup analysis showed a statistical reduction in VPI between T1 and T2 only for GZ (p< 0.05). There was a significant decrease between T0 and T3 for GT (1.67 mm - 1.47 mm in GT, and 1.70 mm -1.47 mm in GZ) and increase in the ratio PH/PW (0.56 - 0.80 in GT and 0.70- 0.83 in GZ) in both groups (p<0.0001). PES also increased significantly for both groups (9 ­ 12 in GT and 7 ­ 12 in GZ) from T0 to T1 and remained high in the other periods. CONCLUSION: The results showed that the prosthetic abutments used did not impact differences in clinical and aesthetic variables related to the behavior of peri-implant tissues during the study. Therefore, the decision to select components an aesthetic area should be based on aspects such as cost, workflow and timing (AU).


Subject(s)
Tissue Conditioning, Dental , Dental Prosthesis, Implant-Supported , Esthetics, Dental , Chi-Square Distribution , Longitudinal Studies , Statistics, Nonparametric , Crowns , Dental Implantation , Mouth Rehabilitation
7.
Article in English | LILACS | ID: biblio-1410607

ABSTRACT

Among the treatment options for Obstructive Sleep Apnea (OSA) we have surgery to correct dentofacial deformities. OSA patients are routinely and predictably submitted to surgical treatment for dentofacial deformities. Frequently, orthognathic surgery and osseointegrated implants may be necessary to enable fixed rehabilitation. Patients submitted to orthognathic surgery have a transient decrease in blood supply after maxillary and mandibular osteotomy procedures, which can impair the results in these cases. This case report aimed to present and discuss the conflicting situation of an OSA patient in need of orthognathic surgery and dental implants. The treatment consisted of: (1) extraction of all teeth; (2) complete rehabilitation of the upper and lower jaw with dental implants and prosthesis without compensation; (3) bimaxillary orthognathic surgery to re-establish the maxillomandibular relationship and increase the upper airway volume. This rehabilitation sequence was a safe alternative for a case of Class II OSA, and rapidly achieved a final restoration with enhanced esthetics, functionality, biomechanics, maintenance of oral hygiene, and patient satisfaction (AU)


Entre as opções de tratamento da Apneia Obstrutiva do Sono (AOS) temos a cirurgia para correção das deformidades dentofaciais. Freqüentemente, a combinação de cirurgia ortognática e implantes osseointegráveis pode ser necessária para permitir a reabilitação dental. Pacientes submetidos à cirurgia ortognática apresentam diminuição transitória do suprimento sanguíneo após procedimentos de osteotomia maxilar e mandibular, o que pode prejudicar os resultados nestes casos. Este relato de caso teve como objetivo apresentar e discutir a situação de um paciente com AOS que necessita de cirurgia ortognática e implantes dentários. O tratamento consistiu em: (1) extração de todos os dentes; (2) reabilitação completa da mandíbula superior e inferior com implantes dentários e próteses sem compensação; (3) cirurgia ortognática bimaxilar para restabelecer a relação maxilomandibular e aumentar o volume das vias aéreas superiores. Essa sequência de reabilitação foi uma alternativa segura para um caso de AOS Classe II, e rapidamente alcançou uma reabilitação com estética, funcionalidade, biomecânica aprimorada, manutenção da higiene oral e satisfação do paciente


Subject(s)
Humans , Female , Middle Aged , Dental Prosthesis, Implant-Supported , Sleep Apnea, Obstructive/surgery , Orthognathic Surgery , Dentofacial Deformities/surgery
8.
Araçatuba; s.n; 2022. 127 p. tab, graf, ilus.
Thesis in Portuguese | LILACS, BBO | ID: biblio-1435801

ABSTRACT

Atualmente, devido a perda do elemento dentário e a procura por um tratamento estético e principalmente funcional, a reabilitação com próteses sobre implante tem sido amplamente empregada, com elevada previsibilidade a longo prazo. Com isso, muito tem sido relatado na literatura acerca das possíveis complicações dessa modalidade de tratamento, principalmente relacionado às possibilidades de falhas mecânicas das próteses implantossuportadas. Por isso, o objetivo do presente projeto foi avaliar a influência na adaptação marginal e interna, da utilização do intermediário protético e do tipo de retenção das próteses (parafusada e cimentada) em implantes cone morse submetidos à ciclagem mecânica. Foram confeccionados 40 corpos de prova, no qual cada um tinha a presença de um implante, com as dimensões de 4mm de diâmetro e 11,5mm de comprimento cone morse (n = 40). Dessa forma, foi avaliado a influência da utilização do intermediário e dos sistemas de retenção em cada conexão de maneira específica. Metade dos corpos de prova de cada sistema de conexão foram confeccionados em UCLA (n=20, sendo 10 parafusadas e 10 cimentadas), enquanto que a outra metade foi utilizado um intermediário pré-fabricado (Pilar Universal (n=20, sendo 10 parafusadas e 10 cimentadas). Os corpos de prova foram submetidos à ciclagem mecânica submersos em água destilada simulando um tempo clínico de cinco anos. Além disso, foram avaliados quanto ao torque e destorque (N) e adaptação marginal e interna (µm) antes e após a ciclagem mecânica. Os dados provenientes das mensurações foram organizados em tabela em formato Excel (Microsoft Office Excel, Redmond, WA, Estados Unidos) e submetidos ao software SigmaPlot (SigmaPlot, San Jose, CA, EUA) versão 12.0. Todos os dados foram analisados inicialmente com a utilização da estatística descritiva. Em seguida, os dados para intrusão (valores positivos), extrusão (valores negativos), destorque inicial, destorque final, e descimentação foram analisados em relação a distribuição de normalidade (teste Shapiro-Wilk e igualdade de variância) e, posteriormente, foi adotada a Análise de Variância (ANOVA) a um fator (Grupos diferentes materiais: G1 a G4), quando houve normalidade dos dados, o pós teste de Tukey foi adotado para as comparações múltiplas, quando não foi identificado uma distribuição normal, empregou-se o teste de Kruskall-Wallis e pós-teste de Dunn's ou Tukey, semelhantemente foi realizada a análise específica das variáveis pilares (UCLA e Pilar Universal) e sistemas de retenção (Parafusado e Cimentado). Para todos os testes aplicou-se nível de significância de 5% (α=0,05). A análise gráfica foi considerada através de um gráfico de barras para os dados que apresentaram normalidade com valores de média e desvio padrão, e as demais análises que não apresentaram normalidade foi considerado a confecção de um boxplot para cada grupo comparativo. As próteses sobre implante utilizando pilares em zircônia tem ganhado cada vez mais espaço, além do estudo in vitro, foi realizada uma revisão sistemática para comparar a perda óssea marginal e as complicações próteticas de reabilitações utilizando pilares de zircônia cimentado e parafusado. Em relação as próteses cimentadas e parafusadas, devido as evidências conflitantes e a presença de muitas revisões sistemáticas sobre o tema, foi realizada uma overview de revisões sistemáticas, com o objetivo de compilar as informações disponiveis e avaliar a qualidade metodologica desses estudos a respeito das complicações presentes nas próteses sobre implante cimentadas ou parafusadas(AU)


Currently, due to the loss of the dental element and the search for an aesthetic and mainly functional treatment, rehabilitation with implant prostheses has been widely used, with high long-term predictability. Thus, much has been reported in the literature about the possible complications of this treatment modality, mainly related to the possibility of mechanical failure of implant-supported prostheses. Therefore, the objective of the present project was to evaluate the influence on the marginal and internal adaptation, the use of the prosthetic intermediate and the type of retention of the prostheses (screwed and cemented) in morse taper implants submitted to mechanical cycling. 40 specimens were made, in which each one had an implant, with dimensions of 4 mm in diameter and 11.5 mm in length (n = 40). In this way, the influence of the use of intermediaries and retention systems in each connection was evaluated in a specific way. Half of the specimens of each connection system were made in UCLA (n=20, being 10 screwed and 10 cemented), while the other half was used a prefabricated intermediate (Universal Abutment (n=20, being 10 screwed) and 10 cemented). The specimens were submitted to mechanical cycling submerged in distilled water simulating a clinical time of five years. In addition, they were evaluated for torque and detorque (N) and marginal and internal adaptation (µm) before and after mechanical cycling. Data from measurements were organized in a table in Excel format (Microsoft Office Excel, Redmond, WA, USA) and submitted to SigmaPlot software (SigmaPlot, San Jose, CA, USA) version 12.0. All data were initially analyzed using descriptive statistics. Then, data for intrusion (positive values), extrusion (negative values), initial detorque, final detorque, and debonding were analyzed in relation to dist determination of normality (Shapiro-Wilk test and equality of variance) and, later, the one-way Analysis of Variance (ANOVA) was adopted (Different material groups: G1 to G4), when there was normality of the data, the Tukey post test was adopted for multiple comparisons, when a normal distribution was not identified, the Kruskall-Wallis test and Dunn's or Tukey post-test were used, similarly the specific analysis of the pillar variables (UCLA and Universal Pillar) and systems retainer (Screwed and Cemented). For all tests, a significance level of 5% (α=0.05) was applied. The graphical analysis was considered through a bar graph for the data that presented normality with mean and standard deviation values, and the other analyzes that did not present normality was considered the creation of a boxplot for each comparative group. Implant prostheses using zirconia abutments have gained more and more space, in addition to the in vitro study, a systematic review was performed to compare marginal bone loss and prosthetic complications of rehabilitations using cemented and screwed zirconia abutments. Regarding cemented and screw-retained prostheses, due to conflicting evidence and the presence of many systematic reviews on the subject, an overview of systematic reviews was performed, with the objective of compiling the available information and evaluating the methodological quality of these studies regarding complications present in cemented or screw-retained implant prostheses(AU)


Subject(s)
Dental Prosthesis Retention , Dental Prosthesis, Implant-Supported , Stress, Mechanical , Dental Implants , Dental Abutments , Dental Prosthesis , Dental Marginal Adaptation , Dental Restoration Failure
9.
Rev. odontol. UNESP (Online) ; 51: e20210024, 2022. tab, ilus
Article in English | LILACS, BBO | ID: biblio-1377169

ABSTRACT

Introduction: Screw-retained restorations have a screw access hole (SAH) sealed with resin composite aiming at safe-guarding the aesthetic features of the ceramic veneer. The loss or wear of the resin composite applied in sealing the SAH is among the most common complications in implant prosthodontics, as the fracture of ceramic veneer. Objective: Evaluate the influence of sealant materials on the fracture resistance of resin composite applied in sealing screw access hole in screwed (SAH) implants. Material and method: The samples were produced from UCLA abutments in metallic NiCr alloy with subsequent application of ceramic. After asperisation and conditioning ceramic surface, was applied silane and dentin adhesive, before sealing the conduits with resin composites Z100 and P60. Nine groups (n=10) were evaluated: sealing with Z-100 (ZNC) and P-60 (PNC) without obturation of SAH; sealing with Z100 (ZCP) and P-60 (PCP) with absorbent cotton; Z100 (ZPT) and P60 (PPT) with polytetrafluoroethylene; Z100 (ZGP) and P60 (PGP) with gutta-percha and a cemented ceramic crown (ICS). After the fracture resistance test, the data were analyzed using two-way ANOVA and Tukey HSD tests (p<.05). Result: The fracture mode was evaluated by scanning electron microscope. Irrespective of the filling material, the highest mean values of fracture resistance were observed in the sealing with P60 (p=.002). When combined with resins composed of a sealing material, the results obtained were: ZGP: 805.5N/ PGP: 929.5N

Introdução: As próteses parafusadas possuem orifício de acesso ao parafuso (SAH), os quais são selados com resina composta. Sua perda ou desgaste está entre as complicações mais comuns em próteses sobre implantes, associadas a fratura da lâmina cerâmica. Objetivo: Assim, é importante avaliar a influência dos materiais de selamento na resistência à fratura de resina composta aplicada ao SAH no selamento de prótese sobre implantes parafusadas. Material e método: As amostras foram produzidas utilizando pilares UCLA em liga metálica de NiCr com posterior aplicação de cerâmica. Após asperização e condicionamento da superfície cerâmica, foram aplicados silano e adesivo dentinário, antes da selagem dos condutos com as resinas compostas Z100 e P60. Foram avaliados nove grupos (n = 10): selamento com Z-100 (ZNC) e P-60 (PNC) sem selamento do SAH; selamento com Z100 (ZCP) e P-60 (PCP) com algodão absorvente; Z100 (ZPT) e P60 (PPT) com politetrafluoroetileno; Z100 (ZGP) e P60 (PGP) com guta-percha e coroa de cerâmica cimentada (ICS). Após o teste de resistência à fratura, os dados foram analisados usando ANOVA de dois fatores e testes Tukey HSD (p<0,05). O tipo de fratura foi avaliado por microscópio eletrônico de varredura. Resultado Independentemente do material obturador, os maiores valores médios de resistência à fratura foram observados no selamento com P60 (p=0,002). Quando combinados com resinas compostas por um material de selamento, os resultados obtidos foram: ZGP: 805,5N/ PGP: 929,5N

Subject(s)
Microscopy, Electron, Scanning , Analysis of Variance , Composite Resins , Dental Prosthesis, Implant-Supported , Dental Implantation , Flexural Strength , Mouth Rehabilitation
10.
Pesqui. bras. odontopediatria clín. integr ; 22: e210131, 2022. tab, graf
Article in English | LILACS, BBO | ID: biblio-1365225

ABSTRACT

Abstract Objective: To analyze and compare changes of quality of life parameter among dental patients rehabilitated by the implant-supported overdentures with different attachment systems. Material and Methods: Forty-eight patients were recruited as a study cohort. The implant placement procedure was based on the results obtained by CBCT scanning and individualized surgical templates manufactured for correct implant placement. Each individual received two k3Pro Implants (Sure Type with 4.0 or 4.5 mm in diameter) at the intraforaminal area due to standard protocol of implantation provided by the manufacturer under local anesthesia. All patients were distributed between two groups based on the fact of using either Locator- or ball-attachments. Rank correlation was measured using Spearman correlation coefficient, while linear correlation was evaluated by Pearson correlation coefficient. Results: No statistically meaningful differences were noted regarding patients' distribution among groups considering age (p>0.05) and gender (p>0.05). Provided patient-level analysis demonstrated that increase of conventional full denture service time was positively correlated with escalation of OHIP-EDENT scores. The most prominent inter-correspondences were noted specifically between longevity of denture service and elevation of scores within "Functional limitation" (r=0.61; p<0.05), "Physical pain" (r=0.51; p<0.05) and "Physical disability" (r=0.57; p<0.05) subdomains. No statistically argumented regressions were noted between increase tendency of OHIP-EDENT scores and gender (p>0.05) or age (p>0.05) parameters. Conclusion: Significant improvements of quality of life measured with OHIP-EDENT were noted for both types of attachments compared to the pre-treatment situation independently of additionally provided surface electromyography-based alignment.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Aged, 80 and over , Quality of Life , Dental Prosthesis, Implant-Supported/instrumentation , Electromyography/instrumentation , Masticatory Muscles , Ukraine , Surveys and Questionnaires , Regression Analysis , Cohort Studies , Statistics, Nonparametric , Occlusal Adjustment , Adaptation to Disasters , Dental Implantation , Denture, Complete , Denture, Overlay
13.
Chinese Journal of Stomatology ; (12): 430-435, 2022.
Article in Chinese | WPRIM | ID: wpr-935885

ABSTRACT

Recently, among the edentulous patients who undergo dental implants, the proportion of hypertensive patients remains high, which poses a greater challenge for clinicians to operate and to maintain the therapeutic effect. The present review comprehensively summarized clinical researches about the adverse effects on dental implants, outlined molecular mechanisms of the positive effects of various antihypertensive drugs on bone metabolism, and proposed that clinicians should select preventive strategies during preoperative and intraoperative procedures according to the blood pressure of patients with hypertension.


Subject(s)
Humans , Alveolar Bone Loss , Dental Implantation, Endosseous/methods , Dental Implants , Dental Prosthesis, Implant-Supported , Dental Restoration Failure , Hypertension/surgery , Jaw, Edentulous , Maxilla/surgery , Risk Assessment
14.
Chinese Journal of Stomatology ; (12): 334-339, 2022.
Article in Chinese | WPRIM | ID: wpr-935871

ABSTRACT

In the field of dental implantology, the design of interface esthetics not only affects the esthetic coutcome, but also affects the health and long-term stability of the tissue around dental implant. Dental implant, bone tissue, soft tissue, and prostheses' morphology are the four critical elements of interface esthetics. The emergence profile located at the junction of these four components is an important form of oral esthetics. With the wide application of digital technique in the field of dentistry, the shaping of emergence profile also involves the application of many kinds of digital approaches. This article intends to make a review of the application of digital technique in rehabilitation of interface esthetics to provide a reference for clinical practic.


Subject(s)
Dental Implants , Dental Prosthesis, Implant-Supported , Esthetics, Dental
15.
Article in English | LILACS, BBO | ID: biblio-1451783

ABSTRACT

Objective: Evaluate the height and bone thickness in healed sites of single implant areas. Materials and Methods:In this cross-sectional study, cone-beam computed tomography (CBCT) images of single edentulous areas of maxilla of patients who needed aesthetic single implant rehabilitations were evaluated for measure the height and thickness using an implant planning software. Data were statistically analyzed using the Mann-Whitney and Pearson correlation test, considering the time, reason and region of tooth loss. For all tests, a p-value <0.05 was considered significant. Results: 48 patients with single tooth loss were included. The statistical analysis demonstrated that reason for the loss was not related to height or bone thickness. Bone thickness was statis-tical significant higher in the posterior region. For the anterior region, the bone thickness was significantly higher when the tooth was lost within 5 years. Pearson correlation test showed a moderate negative signifi-cant correlation between time of tooth loss and bone thickness in anterior region. Conclusion: Reason for tooth loss had no influence on the bone measurements of the residual ridge. In contrast, bone thickness may vary according to the region of tooth loss. The time of tooth loss and bone thickness in the anterior region were inversely proportional. Registration number at https://ensaiosclinicos.gov.br/rg/RBR-5cnyjj.


Objetivo: Avaliar a altura e espessura óssea em sítios unitários cicatrizados. Materiais e Métodos: Neste estudo transversal, imagens de tomografia computa-dorizada de feixe cônico (TCFC) de regiões edêntulas unitárias maxilares de pacientes candidatos a reabilitação unitária implantossuportada foram mensuradas em relação à altura e espessura óssea usando um software de planejamento de implante. Os dados foram analisados estatisticamente por meio do teste Mann-Whitney e de correlação de Pearson, considerando o tempo, o motivo e região da perda dentária. Para todos os testes, um valor de p <0,05 foi considerado significativo. Resultados: Foram incluídos 48 pacientes com perda dentária unitária. A análise estatística demonstrou que o motivo da perda dentária não influenciou na altura ou na espessura óssea. A espessura óssea foi estatisticamente maior na região posterior. Para a região anterior, a espessura óssea foi significativamente maior quando o dente foi perdido em até 5 anos. O teste de correlação de Pearson demonstrou uma correlação significativa negativa moderada entre o tempo de perda do dente e a espessura óssea na região anterior. Conclusão: O motivo da perda dentária não influenciou nas medidas ósseas do rebordo residual. Em contraste, a espessura do osso pode variar de acordo com a região da perda dentária. O tempo de perda dentária e a espessura óssea da região anterior foram inversamente proporcionais. Número de registro em https://ensaiosclinicos.gov.br/rg/RBR-5cnyjj


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Young Adult , Alveolar Bone Loss , Jaw, Edentulous , Dental Prosthesis, Implant-Supported , Cross-Sectional Studies , Cone-Beam Computed Tomography
16.
Rev. Odontol. Araçatuba (Impr.) ; 42(3): 25-31, set.-dez. 2021. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1284114

ABSTRACT

Os pilares personalizados são usados em reabilitações protéticas sobre implantes quando há exigências de angulação, perfil de emergência e margem gengival, em que os pilares convencionais não conseguem reabilitar de forma correta os conceitos de forma, função e estética. Através de um relato de caso clínico, onde houve a reabilitação dos elementos 21 e 22, com o uso de implante e próteses, usando o pilar personalizado em zircônia sobre o implante do 22, confeccionado com a tecnologia CAD/CAM. Esse sistema de pilares personalizados oferecem o desenho mais próximo do ideal e o ajuste mais perfeito em relação ao implante e ao tecido gengival, além de considerar as vantagens e desvantagen em relação aos pilares convencionais pré-fabricados nas questões de tempo de tratamento, custos e resultado estético e biológico. Concluimos que a reabilitação com pilares personalizados CAD/CAM confere uma excelente alternativa reabilitadora, devolvendo função e estética aos pacientes, desde que haja conhecimento adequado por parte dos profissionais envolvidos(AU)


Custom abutments are used in prosthetic rehabilitation on implants when angulation, emergence profile and gingival margin are used, where abutments are not recovered in a correct way to rehabilitate the concepts of shape, functions and aesthetics. Through a clinical case, where the elements 21 and 22 were rehabilitated, with the use of implants and practices, using the personalized abutments in zirconia, made with CAD / CAM technology. This customized system and abutments offers the closest ideal design and the most perfect fit in relation to the implant and gingival tissue, in addition to considering advantages and disadvantages in relation to the prefabricated applied abutments in terms of treatment time, costs and results aesthetic and biological. Conclude that a rehabilitation with customized CAD / CAM abutments provides an excellent rehabilitation alternative, returning function and aesthetics to patients, as long as there is adequate knowledge for part of the professionals involved(AU)


Subject(s)
Humans , Female , Aged , Dental Implants , Computer-Aided Design , Biocompatible Materials , Dental Prosthesis, Implant-Supported , Esthetics, Dental
17.
Braz. j. oral sci ; 20: e214873, jan.-dez. 2021. ilus
Article in English | BBO, LILACS | ID: biblio-1254742

ABSTRACT

Aim: To compare the marginal fit of lithium disilicate CAD/CAM crowns and heat-pressed crowns fabricated using milled wax patterns, and evaluate its effect on stress distribution in implantsupported rehabilitation. Methods: A CAD model of a mandibular first molar was designed, and 16 lithium disilicate crowns (8/group) were obtained. The crown-prosthetic abutment set was evaluated in a scanning electron microscopy. The mean misfit for each group was recorded and evaluated using Student's t-test. For in silico analysis, a virtual cement thickness was designed for the two misfit values found previously, and the CAD model was assembled on an implant-abutment set. A load of 100 N was applied at 30° on the central fossa, and the equivalent stress was calculated for the crown, titanium components, bone, and resin cement layer. Results: The CAD/CAM group presented a significantly (p=0.0068) higher misfit (64.99±18.73 µm) than the heat-pressed group (37.64±15.66 µm). In silico results showed that the heat-pressed group presented a decrease in stress concentration of 61% in the crown and 21% in the cement. In addition, a decrease of 14.5% and an increase of 7.8% in the stress for the prosthetic abutment and implant, respectively, was recorded. For the cortical and cancellous bone, a slight increase in stress occurred with an increase in the cement layer thickness of 5.9% and 5.7%, respectively. Conclusion: The milling of wax patterns for subsequent inclusion and obtaining heat-pressed crowns is an option to obtain restorations with an excellent marginal fit and better stress distribution throughout the implant-abutment set


Subject(s)
Microscopy, Electron, Scanning , Computer-Aided Design , Dental Marginal Adaptation , Dental Prosthesis, Implant-Supported , Finite Element Analysis , Dental Materials
18.
J. oral res. (Impresa) ; 10(4): 1-6, ago. 31, 2021. ilus
Article in English | LILACS | ID: biblio-1395937

ABSTRACT

Introduction: Ectodermal dysplasia (ED) comprises a broad group of genetic disorders characterized by alterations of the structures derived from the ectoderm, including those of the stomatognathic system. Case Report: The present article aims to report the prosthetic management of a patient with anhidrotic ectodermal dysplasia. A male patient diagnosed with ED who attended the dental consultation displaying oligodontia; underdeveloped alveolar ridges were observed. Results: The established treatment consisted of the adaptation of implant-supported fixed full-arch prosthesis designed through CAD-CAM technology for the lower jaw and of a removable partial prosthesis with muco-dental support for the upper jaw. The dental approach of patients with ED is based on a correct analysis of the facial characteristics and stomatological conditions of each subject. Conclusion: A multidisciplinary approach is mandatory due to the biological and functional complexity in biomechanical terms of these individuals.


Introducción: La displasia ectodérmica (DE) comprende un amplio grupo de trastornos genéticos caracterizados por alteraciones de las estructuras derivadas del ectodermo, incluidas las del sistema estomatognático. Reporte de Caso: El presente artículo tiene como objetivo informar del manejo protésico de un paciente con displasia ectodérmica anhidrótica. Paciente varón diagnosticado de DE acudió a consulta odontológica por oligodoncia; Se observaron crestas alveolares subdesarrolladas. Resultados: El tratamiento establecido consistió en la adaptación de una prótesis de arcada completa fija implantosoportada diseñada mediante tecnología CAD-CAM para el maxilar inferior y de una prótesis parcial removible con soporte muco-dental para el maxilar superior. El abordaje odontológico de los pacientes con DE se basa en un correcto análisis de las características faciales y condiciones estomatológicas de cada sujeto. Conclusión: Un enfoque multidisciplinario es obligatorio debido a la complejidad biológica y funcional en términos biomecánicos de estos individuos.


Subject(s)
Humans , Male , Adult , Young Adult , Ectodermal Dysplasia/rehabilitation , Dental Prosthesis, Implant-Supported , Anodontia/rehabilitation , Dental Implants , Treatment Outcome , Dental Prosthesis Design , Dental Implants, Single-Tooth , Ectodermal Dysplasia 1, Anhidrotic
19.
Rev. Odontol. Araçatuba (Impr.) ; 42(2): 35-41, maio-ago. 2021.
Article in Portuguese | LILACS, BBO | ID: biblio-1252912

ABSTRACT

O objetivo deste estudo é realizar uma revisão da literatura para identificar os principais fatores que levam às complicações em implantodontia. Os implantes osseointegráveis e sua aplicação na odontologia revolucionaram a reabilitação oral de pacientes sejam eles edêntulos totais ou parciais em busca de recuperação funcional e satisfação estética. A pesquisa científica em uma busca constante pela magnificação deste tratamento, possibilitaram o uso de reabilitações implantossuportadas como um método de tratamento previsível com um índice elevado de sucesso. No entanto, como qualquer modo de tratamento, complicações e falhas também podem ocorrer na implantodontia. Após a revisão de literatura pode-se concluir que as condições médicas do paciente, hábitos sociais e parafuncionais, inexatidão do planejamento cirúrgico e protético, conhecimento técnico e científico do cirurgião-dentista, a falta de relacionamento interdisciplinar e deficiente cooperação do paciente no pós-operatório, podem estar relacionadas às complicações no tratamento reabilitador com implantes dentários(AU)


The objective of this study is to carry out a complete literature review to elucidate and evaluate the factors that lead to complications in implantology. The osseointegrated implantsimplants and their application in dentistry have revolutionized the oral rehabilitation of patients who need this treatment, be they total or partial edentulous in search of functional recovery and aesthetic satisfaction. Scientific research and a constant search for the magnification of this treatment, allowed the use of implant-enhanced rehabilitation as a predictable treatment method with a high success rate. However, like any treatment mode, complications and failures can also occur in implantology. the patient's medical conditions, social and parafunctional habits, inaccuracy of surgical and prosthetic planning, technical and scientific knowledge of the dental surgeon, lack of interdisciplinary relationship and poor patient cooperation in the postoperative, may be related to complications in rehabilitating treatment with dental implants(AU)


Subject(s)
Dental Implants , Dental Implants/adverse effects , Dental Implantation, Endosseous , Tobacco Use Disorder , Dental Prosthesis, Implant-Supported , Diabetes Mellitus , Diphosphonates , Peri-Implantitis , Mouth Rehabilitation
20.
Rev. cient. odontol ; 9(2): e064, abr.-jun. 2021. tab
Article in Spanish | LILACS, LIPECS | ID: biblio-1254603

ABSTRACT

Los intermediarios protésicos en implantología oral son los aditamentos que permiten la conexión entre el implante y la prótesis propiamente dicha. Aunque dicha rehabilitación posee una alta tasa de éxito, la selección del pilar protésico representa una fase importante en el tratamiento implantológico. Actualmente, existe una gran variedad de pilares intermediarios, que corresponden a las diversas técnicas y materiales. Los intermediarios protésicos se podrían clasificar según el tipo de conexión, su retención a la prótesis, su relación axial con el cuerpo del implante, su material de fabricación, su tipo de fabricación o si son para rehabilitación unitaria o múltiple. Esta situación puede generarle dudas al rehabilitador al momento de elegir los aditamentos implantológicos idóneos para cada caso en particular, lo que genera un escenario de dilema al seleccionar el aditamento protésico que permita lograr una rehabilitación satisfactoria: funcional, estética y que preserve los principios biológicos. En efecto, la implantología oral ha revolucionado la odontología y seguirá ampliando el abanico de posibilidades; por ello, es importante clasificar las opciones protésicas disponibles. La presente revisión de la literatura tiene como objetivo evidenciar las diferentes alternativas y opciones de pilares intermediarios más utilizados en prótesis sobre implantes. (AU)


Prosthetic intermediaries in oral implantology are attachments that allow connection between the implant and the prosthesis itself. Although this rehabilitation has a high success rate; the selection of the prosthetic abutment represents is important in implant treatment. Currently, there is a great variety of intermediate abutments, corresponding to various techniques and materials. Prosthetic intermediaries can be classified according to the type of connection, their retention to the prosthesis, their axial relationship with the implant body, the manufacturing material and type of manufacture, or whether rehabilitation is single or multiple. This scenario can lead to doubts as to the selection of the ideal implant attachment in each case in order to achieve satisfactory rehabilitation, as well as functional and aesthetic requirements and the preservation of biological principles. Indeed, oral implantology has revolutionized dentistry and will continue to expand the range of possibilities; therefore, it is important to classify the prosthetic options available. The present literature review aims to demonstrate the different alternatives and options available for the intermediate abutments most used in implant prostheses. (AU)


Subject(s)
Dental Prosthesis, Implant-Supported , Immediate Dental Implant Loading , Dental Implant-Abutment Design , Review Literature as Topic
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