Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 1.335
Filtrar
1.
Braz Oral Res ; 33(0): e089, 2019 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-31531552

RESUMO

The objectives of this double-blind randomized clinical trial were to compare (a) the clinical times and (b) the occurrence and severity of postoperative sensitivity, of posterior restoration that used a universal adhesive, in a self-etch or selective enamel-etching technique, along with incremental or bulk-fill composites (presented in syringes or capsules). A total of 295 posterior restorations were placed according to the following groups: SETB - self-etch/bulk-fill in syringe; SETC - self-etch/bulk-fill in capsules; SETI - self-etch/incremental; SEEB - selective enamel-etching/bulk-fill in syringe; SEEC - selective enamel-etching/bulk-fill in capsules; and SEEI - selective enamel-etching/incremental. Clinical time was assessed by a reason (s/mm3) between the total volume of resin inserted and the total time required to perform the restorations. Postoperative sensitivity was evaluated using two scales (Numeric Rating Scale and Visual Analogue Scale). Mean clinical time results, analyzed by Wald's Chi-square, showed significant statistical differences among all groups (p<0.001), indicating that the restorative strategy affected the time required for the restoration. A generalized estimating equation model statistical analysis, performed to compare postoperative sensitivity, showed that neither the restorative technique, the adhesive strategy nor the presentation mode of the bulk-fill composite affected the overall risk of postoperative sensitivity (4.06 [2.22-6.81]). The use of bulk-fill composite, presented in capsules or syringes, is less time consuming and does not increase the risk or intensity of postoperative sensitivity relative to the traditional incremental technique.


Assuntos
Resinas Compostas/uso terapêutico , Restauração Dentária Permanente/efeitos adversos , Sensibilidade da Dentina/etiologia , Cápsulas , Método Duplo-Cego , Feminino , Humanos , Masculino , Complicações Pós-Operatórias/etiologia , Valores de Referência , Reprodutibilidade dos Testes , Fatores de Risco , Seringas , Fatores de Tempo , Resultado do Tratamento
2.
J Biosci ; 44(4)2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31502556

RESUMO

Foreign bodies can penetrate the interior of soft and, sometimes, hard, tissues in various ways, including through open wounds, lacerations and traumatic accidents. However over the years, evidence of links between the use of dental materials and lately, significant involvement of aesthetic filler materials as foreign bodies in the oral and perioral region have been reported. Foreign body granulomas (FBGs) may develop from this exogenous material, histopathologically characterized by the presence of chronic inflammation and a high amount of macrophages. This study presents nine FBG cases affecting the oral and perioral regions, and carries out a literature review on the main clinical, histopathological and material characteristics used in dental and dermatological procedures related to the appearance of this type of granuloma.


Assuntos
Materiais Dentários/efeitos adversos , Restauração Dentária Permanente/efeitos adversos , Granuloma de Corpo Estranho/patologia , Inflamação/patologia , Adolescente , Adulto , Feminino , Corpos Estranhos/induzido quimicamente , Corpos Estranhos/diagnóstico por imagem , Corpos Estranhos/patologia , Granuloma de Corpo Estranho/induzido quimicamente , Granuloma de Corpo Estranho/diagnóstico por imagem , Humanos , Inflamação/induzido quimicamente , Inflamação/diagnóstico por imagem , Macrófagos/efeitos dos fármacos , Macrófagos/patologia , Masculino , Pessoa de Meia-Idade , Adulto Jovem
3.
Niger J Clin Pract ; 22(8): 1126-1131, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31417057

RESUMO

Objective: The aim of this cross-sectional study was to assess the prevalence of apical periodontitis in root canal treated teeth in Turkish subpopulation and to evaluate the effects of both coronal restoration quality and root canal treatment (RCT) quality on apical periodontitis. Materials and Methods: Panoramic images of individuals who applied to our department for different diagnostic reasons were randomly and retrospectively scanned. Total RCT number, RCT quality, type of coronal restoration, restoration quality, periapical status, and total number of teeth were recorded. The criteria used for coronal restorations quality and RCT quality were defined by De Moor et al. and slightly modified by Gunduz et al. Periapical status was assessed by the periapical index developed by Orstavik et al. Pearson's Chi-square test was used for statistical analysis, and the intraobserver agreements were assessed by Kappa coefficients. Values of P < 0.05 were accepted to be meaningful. Results: The total examined teeth number was 6064, of which had 541 (8.9%) RCT. The prevelance of apical periodontitis was 40.5%. The number of adequate RCT was 178 (32.9%), and 138 (77.5%) of them were healthy. The number of adequate coronal restoration was 334, and 62.3% of them were healthy. For the cases that have adequate coronal restorations, there was statistically significant relationship between adequate RCT and periapical status (P < 0.001). Conclusion: The prevelance of apical periodontitis was 40.5% and there was statistically significant relationship between adequate RCT and periapical status.


Assuntos
Cavidade Pulpar/diagnóstico por imagem , Restauração Dentária Permanente/efeitos adversos , Periodontite Periapical/diagnóstico por imagem , Radiografia Panorâmica/métodos , Tratamento do Canal Radicular/efeitos adversos , Coroa do Dente/diagnóstico por imagem , Raiz Dentária/diagnóstico por imagem , Adulto , Distribuição de Qui-Quadrado , Estudos Transversais , Restauração Dentária Permanente/normas , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Periodontite Periapical/epidemiologia , Prevalência , Estudos Retrospectivos , Tratamento do Canal Radicular/normas , Turquia/epidemiologia
4.
Trials ; 20(1): 530, 2019 Aug 24.
Artigo em Inglês | MEDLINE | ID: mdl-31445509

RESUMO

BACKGROUND: Guidelines in pediatric restorative dentistry recommend the use of preformed pediatric stainless steel crowns (SSCs) in cases of severe tooth decay of at least two surfaces. This clinically effective and safe restorative option is frequently refused by parents for esthetic reasons; they prefer conventional restorations using esthetic filling materials (composites, glass ionomer) if lesion severity limited to two surfaces permits. Recently, manufacturers have proposed esthetic preformed pediatric zirconia crowns (ZCs) but these have been assessed in only two randomized clinical trials (RCT) with follow-ups of 6 and 12 months. Only one of these RCTs was carried out on primary molars to test ZCs (NuSmile ZR) without a groove in its inner surface. The primary objective of this proposed RCT is to assess the effectiveness of ZCs compared with SSCs. Our hypothesis is that the effectiveness of ZCs will be equivalent to that of SSCs. METHODS: In this split-mouth, 2-year RCT, pairs of primary molars in 101 child participants will be randomized and restored with SSCs (ESPE, 3M) and ZCs (EZCrowns, Sprig Oral Health Technologies) characterized by grooves on their inner surface. Primary molars will first be allocated to SSCs, and 1 to 2 weeks later the other primary molar of the same pair will be restored by ZC. The primary outcome is the success defined by the "absence of major clinical and radiographic failure" (e.g., pain, pulp infection, dental abscess or periradicular pathology visible on radiographs). The secondary outcomes include the retention and fracture rates, the gingival condition, the wear of the antagonist of the treated teeth, as well as both parental and child satisfaction. DISCUSSION: This study will investigate two types of preformed pediatric crowns for the management of severe decay on primary molars. The results may help practitioners choose the better therapeutic option and to explain to parents the advantages and disadvantages of these two therapies. TRIAL REGISTRATION: NCT03296709 . Registered on  27 September 2017.


Assuntos
Coroas , Assistência Odontológica para Crianças , Cárie Dentária/cirurgia , Restauração Dentária Permanente/instrumentação , Dente Molar/cirurgia , Dente Decíduo/cirurgia , Zircônio , Adolescente , Fatores Etários , Criança , Pré-Escolar , Cárie Dentária/diagnóstico , Planejamento de Prótese Dentária , Falha de Restauração Dentária , Restauração Dentária Permanente/efeitos adversos , Feminino , França , Humanos , Masculino , Estudos Multicêntricos como Assunto , Satisfação do Paciente , Ensaios Clínicos Controlados Aleatórios como Assunto , Fatores de Tempo , Resultado do Tratamento
5.
Cochrane Database Syst Rev ; 3: CD010526, 2019 03 05.
Artigo em Inglês | MEDLINE | ID: mdl-30834516

RESUMO

BACKGROUND: Resin-based composite (RBC) is currently accepted as a viable material for the restoration of caries for posterior permanent teeth requiring surgical treatment. Despite the fact that the thermal conductivity of the RBC restorative material closely approximates that of natural tooth structure, postoperative hypersensitivity is sometimes still an issue. Dental cavity liners have historically been used to protect the pulp from the toxic effects of some dental restorative materials and to prevent the pain of thermal conductivity by placing an insulating layer between restorative material and the remaining tooth structure. This is an update of the Cochrane Review first published in 2016. OBJECTIVES: The objective of this review was to assess the effects of using dental cavity liners in the placement of Class I and Class II resin-based composite posterior restorations in permanent teeth in children and adults. SEARCH METHODS: Cochrane Oral Health's Information Specialist searched the following databases: Cochrane Oral Health's Trials Register (to 12 November 2018), the Cochrane Central Register of Controlled Trials (CENTRAL; 2018, Issue 10) in the Cochrane Library (searched 12 November 2018), MEDLINE Ovid (1946 to 12 November 2018), Embase Ovid (1980 to 12 November 2018) and LILACS BIREME Virtual Health Library (Latin American and Caribbean Health Science Information database; 1982 to 12 November 2018). We searched ClinicalTrials.gov and the World Health Organization International Clinical Trials Registry Platform for ongoing trials. No restrictions were placed on the language or date of publication when searching the electronic databases. SELECTION CRITERIA: We included randomized controlled trials assessing the effects of the use of liners under Class I and Class II posterior resin-based composite restorations in permanent teeth (in both adults and children). We included both parallel and split-mouth designs. DATA COLLECTION AND ANALYSIS: We utilized standard methodological procedures prescribed by Cochrane for data collection and analysis. Two review authors screened the search results and assessed the eligibility of studies for inclusion against the review inclusion criteria. We conducted risk of bias assessments and data extraction independently and in duplicate. Where information was unclear we contacted study authors for clarification. MAIN RESULTS: Eight studies, recruiting over 700 participants, compared the use of dental cavity liners to no liners for Class I and Class II resin-based composite restorations.Seven studies evaluated postoperative hypersensitivity measured by various methods. All studies were at unclear or high risk of bias. There was inconsistent evidence regarding postoperative hypersensitivity (either measured using cold response or patient-reported), with a benefit shown at some, but not all, time points (low-quality evidence).Four trials measured restoration longevity. Two of the studies were judged to be at high risk and two at unclear risk of bias. No difference in restoration failure rates were shown at 1 year follow-up, with no failures reported in either group for three of the four studies; the fourth study had a risk ratio (RR) 1.00 (95% confidence interval (CI) 0.07 to 15.00) (low-quality evidence). Three studies evaluated restoration longevity at 2 years follow-up and, again, no failures were shown in either group.No adverse events were reported in any of the included studies. AUTHORS' CONCLUSIONS: There is inconsistent, low-quality evidence regarding the difference in postoperative hypersensitivity subsequent to placing a dental cavity liner under Class I and Class II posterior resin-based composite restorations in permanent posterior teeth in adults or children 15 years or older. Furthermore, no evidence was found to demonstrate a difference in the longevity of restorations placed with or without dental cavity liners.


Assuntos
Resinas Compostas , Forramento da Cavidade Dentária/instrumentação , Restauração Dentária Permanente , Sensibilidade da Dentina/prevenção & controle , Dor Pós-Operatória/prevenção & controle , Condutividade Térmica , Adolescente , Adulto , Cárie Dentária/classificação , Cárie Dentária/cirurgia , Falha de Restauração Dentária/estatística & dados numéricos , Restauração Dentária Permanente/efeitos adversos , Restauração Dentária Permanente/classificação , Sensibilidade da Dentina/epidemiologia , Sensibilidade da Dentina/etiologia , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto
7.
J Prosthodont ; 28(1): e332-e336, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29578300

RESUMO

PURPOSE: The apical seal provided by a root canal filling may be breached via coronal leakage. This study aimed to compare the teeth restored with custom-made cast metal posts and cores cemented with different luting agents in terms of coronal microleakage after thermocycling. MATERIALS AND METHODS: This in vitro study was conducted on 32 extracted single-canal teeth. Root canals were prepared by step-back technique and filled with gutta percha and sealer. The coronal 7 mm of gutta percha was removed, and post space was prepared using peeso reamers #2 and #3 consecutively. After fabricating the acrylic resin patterns of the posts and cores, they were cast using Ni-Cr metal alloy. The specimens were divided into 4 groups in which the castings were cemented using one of the following luting agents: zinc phosphate (ZP), glass ionomer (GI), Panavia F 2.0, and Speed CEM. After cementation, the teeth were immersed in distilled water and incubated for 7 days. Then, the teeth were subjected to thermocycling, immersed in silver nitrate for 6 hours, and finally sectioned. The degree of dye penetration into the coronal part of the specimens was measured using a stereomicroscope. Data were analyzed using Kruskal-Wallis and Mann-Whitey U tests with significance level of 0.05. RESULTS: The median microleakage in ZP, Speed CEM, GI, and Panavia were 171.89, 114.76, 26.51, and 20.02 µm, respectively. Pairwise comparisons among GI and ZP, GI, and Speed CEM, ZP and Panavia, ZP and Speed CEM, and Panavia and Speed CEM groups yielded significant differences (p < 0.05). CONCLUSION: Complete coronal seal was not achieved with any of the luting agents. The highest and the lowest degree of microleakage was yielded by ZP and Panavia luting agents, respectively.


Assuntos
Cimentos Dentários/uso terapêutico , Infiltração Dentária/etiologia , Restauração Dentária Permanente/métodos , Técnica para Retentor Intrarradicular/efeitos adversos , Restauração Dentária Permanente/efeitos adversos , Humanos , Técnicas In Vitro , Obturação do Canal Radicular/efeitos adversos , Obturação do Canal Radicular/métodos
8.
J Prosthodont ; 28(1): e304-e309, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29323779

RESUMO

PURPOSE: To see whether applying four different liners under short fiber-reinforced composite (SFRC), everX Posterior, compared to conventional composite resin, Z250, affected their strengthening property in premolar MOD cavities. MATERIALS AND METHODS: Mesio-occluso-distal (MOD) cavities were prepared in 120 sound maxillary premolars divided into 10 groups (n = 12) in terms of two composite resin types and 4 liners or no liner. For each composite resin, in 5 groups no liner, resin-modified glass ionomer (RMGI), conventional flowable composite (COFL), self-adhesive flowable composite resin (SAFL), and self-adhesive resin cement (SARC) were applied prior to restoring incrementally. After water storage and thermocycling, static fracture resistance was tested. Data (in Newtons) were analyzed using two-way ANOVA (α = 0.05). RESULTS: Fracture resistance was significantly affected by composite resin type (p = 0.02), but not by the liner (p > 0.05). The interaction of the two factors was not statistically significant (p > 0.05). SFRC exhibited higher fracture strength (1470 ± 200 N) compared to conventional composite resin (1350 ± 290), irrespective of the application of liners. Application of SARC and SAFL liners led to a higher number of restorable fractures for both composite resins. CONCLUSIONS: The four liners can be used without interfering with the higher efficacy of SFRC, compared to conventional composite resins, to improve the fracture strength of premolar MOD cavities.


Assuntos
Dente Pré-Molar/cirurgia , Resinas Compostas/uso terapêutico , Forramento da Cavidade Dentária , Restauração Dentária Permanente , Resinas Compostas/efeitos adversos , Forramento da Cavidade Dentária/efeitos adversos , Falha de Restauração Dentária , Restauração Dentária Permanente/efeitos adversos , Restauração Dentária Permanente/métodos , Análise do Estresse Dentário , Vidro , Humanos , Polímeros/efeitos adversos , Polímeros/uso terapêutico
9.
J Prosthodont ; 28(1): e325-e331, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29508474

RESUMO

PURPOSE: Molar MOD (mesial-occlusal-distal) cavity preparation weakens relative cuspal stiffness by up to 63%, often resulting in cuspal fracture. This investigation inspects fracture resistance of MOD cavities restored using direct composite restoration. MATERIALS AND METHODS: 120 extracted, intact mandibular molars were selected. MOD cavities with different depth/wall thickness were prepared in 9 groups (n = 12): A: 3 mm/3.5 mm, B: 3 mm/2.5 mm, C: 3 mm/1.5 mm, D: 5 mm/3.5 mm, E: 5 mm/2.5 mm, F: 5 mm/1.5 mm, G: 7 mm/3.5 mm, H: 7 mm/2.5 mm, I: 7 mm/1.5 mm. Specimens with 7 mm deep cavities received root canal treatment. The teeth were restored with dental composite. Maximal fracture strength test was conducted. Intact natural teeth were used as control. For statistical analysis Kruskal-Wallis ANOVA with post-hoc pairwise comparisons was used (α = 0.05). RESULTS: Significant difference was indicated between the control and groups D, E, F, G, H, and I. No significant differences were found between the A, B, C groups and the control. Comparing the 5 and 7 mm cavity depth groups, there was no statistical difference between any of them. CONCLUSIONS: Within the limitations of this investigation, the following conclusions can be drawn regarding molar teeth with a MOD cavity: 3 mm or shallower cavities can be restored to the physiological fracture strength with direct composite restorations; 5 mm or deeper cavities cannot be restored to the physiological fracture strength with direct composite restorations. Cusp thickness does not significantly influence fracture strength in molar MOD cavities with a direct composite restoration.


Assuntos
Preparo da Cavidade Dentária , Restauração Dentária Permanente , Dente Molar/cirurgia , Fraturas dos Dentes/etiologia , Preparo da Cavidade Dentária/efeitos adversos , Preparo da Cavidade Dentária/métodos , Falha de Restauração Dentária , Restauração Dentária Permanente/efeitos adversos , Restauração Dentária Permanente/métodos , Análise do Estresse Dentário , Humanos , Técnicas In Vitro , Fraturas dos Dentes/prevenção & controle
10.
Aust Dent J ; 64(1): 43-46, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30276816

RESUMO

Subcutaneous facial emphysema (SFE) following routine dental operative procedure is an uncommon but potentially life-threatening complication. The present case details a Class V restoration where air was introduced into the fascial tissue planes via the gingival sulcus from the use of an air-driven dental handpiece. Although the SFE is usually self-limiting within 3-10 days, such instances should be regarded as a medical emergency as in severe cases, the air may spread to the neck, mediastinum and thorax to result in cervicofacial emphysema with potential pneumomediastinum and pneumothorax.


Assuntos
Equipamentos Odontológicos de Alta Rotação/efeitos adversos , Restauração Dentária Permanente , Enfisema Subcutâneo/etiologia , Restauração Dentária Permanente/efeitos adversos , Face , Humanos , Doença Iatrogênica , Enfisema Mediastínico/prevenção & controle , Pescoço , Enfisema Subcutâneo/prevenção & controle
11.
J Prosthodont ; 28(2): e806-e810, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30350332

RESUMO

PURPOSE: To present the prevalence and contributing factors of interproximal contact loss (ICL) between implant restorations and adjacent teeth, and to provide recommendations for possible prevention and treatment of this complication. MATERIALS AND METHODS: The authors explored the dental literature on PubMed on ICL between implants and adjacent teeth, interproximal contacts, open contacts, teeth migration causes, facial bone formation, and facial bone changes. RESULTS: ICL between fixed implant prostheses and adjacent teeth has been reported. A literature search revealed 7 studies showing a high prevalence of ICL between implant prostheses and adjacent teeth. The literature indicates that this ICL is greater in the mesial aspect in comparison with the distal. As identified by the literature review, ICL in the maxilla ranged between 18% and 66% versus 37% to 54% in the mandible. ICL might occur as early as 3 months after prosthetic treatment. The literature review documented possible tooth migration causes, crown-related causes, and bone formation/growth-related causes of ICL. CONCLUSIONS: ICL is a common multifactorial implant complication. The clinical condition will dictate if the implant crown needs to be modified/replaced or the natural tooth needs to be restored to reestablish interproximal contact between an implant prosthesis and adjacent tooth. Periodic evaluations of interproximal contacts between implant restorations and the adjacent teeth and the use of screw-retained restorations due to ease of removal is recommended to diagnose and mitigate the problem. An orthodontic retainer or occlusal guard may help prevent ICL between the implant restoration and the adjacent tooth.


Assuntos
Implantes Dentários/efeitos adversos , Restauração Dentária Permanente/efeitos adversos , Migração de Dente/etiologia , Implantação Dentária Endo-Óssea/efeitos adversos , Humanos , Prevalência , Migração de Dente/epidemiologia , Migração de Dente/prevenção & controle
12.
J Prosthodont ; 28(1): e45-e50, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28383139

RESUMO

PURPOSE: The grey-bluish discoloration of gingiva (known as "amalgam tattoo") does not appear only in the presence of amalgam restorations. It may also be seen in cases of teeth restored with cast dowels and porcelain-fused-to-metal (PFM) restorations. The aim of this article was to determine the clinical characteristics of abutment teeth with gingival discoloration. MATERIALS AND METHODS: This research was conducted on 25 patients referred for cast dowel and PFM restorations. These restorations were manufactured from Ni-Cr alloys. Ninety days after cementing the fixed prosthodontic restorations, the abutment teeth (n = 61) were divided into a group with gingival discoloration (GD) (n = 25) and without gingival discoloration (NGD) (n = 36). The control group (CG) comprised the contralateral teeth (n = 61). Plaque index, gingival index, clinical attachment level, and probing depth were assessed before fabrication and also 90 days after cementation of the PFM restorations. RESULTS: The gingival index, clinical attachment level, and probing depths of the abutment teeth that had GD were statistically higher before restoration, in comparison with the abutment teeth in the NGD and control groups. Ninety days after cementation, the abutment teeth with GD had significantly lower gingival indexes and probing depths, compared to the abutment teeth in the NGD group. Both abutment teeth groups (GD and NGD) had significantly higher values of clinical attachment levels when compared to the control group. There were no statistically significant differences in plaque index values between the study groups. CONCLUSIONS: The results of this study indicated that impairment of periodontal status of abutment teeth seemed to be related to the presence of gingival discolorations. Therefore, fabrication of fixed prosthodontic restorations requires careful planning and abutment teeth preparation to minimize the occurrence of gingival discolorations. CLINICAL RELEVANCE: With careful preparation of abutment teeth for cast dowels and crown restorations it may be possible to decrease the frequency of gingival discolorations adjacent to abutment teeth.


Assuntos
Restauração Dentária Permanente/efeitos adversos , Doenças da Gengiva/etiologia , Adulto , Índice de Placa Dentária , Restauração Dentária Permanente/métodos , Feminino , Gengiva/patologia , Doenças da Gengiva/patologia , Humanos , Masculino , Perda da Inserção Periodontal/patologia , Índice Periodontal , Técnica para Retentor Intrarradicular/efeitos adversos
13.
PLoS One ; 13(12): e0208803, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30532171

RESUMO

OBJECTIVES: The aim was to gain knowledge regarding the risk of perinatal death related to exposure to dental amalgam fillings in the mother. DESIGN: Population-based observational cohort study. SETTING: The Norwegian Mother and Child Cohort Study, a Norwegian birth cohort of children born in 1999-2008 conducted by the Norwegian Institute of Public Health. PARTICIPANTS: 72,038 pregnant women with data on the number of teeth filled with dental amalgam. MAIN OUTCOME MEASURES: Data on perinatal death (stillbirth ≥ 22 weeks plus early neonatal death 0-7 days after birth) were obtained from the Medical Birth Registry of Norway. RESULTS: The absolute risk of perinatal death ranged from 0.20% in women with no amalgam-filled teeth to 0.67% in women with 13 or more teeth filled with amalgam. Analyses including the number of teeth filled with amalgam as a continuous variable indicated an increased risk of perinatal death by increasing number of teeth filled with dental amalgam (crude OR 1.065, 95% CI 1.034 to 1.098, p<0.001). After adjustment for potential confounders (mothers' age, education, body mass index, parity, smoking during pregnancy, alcohol consumption during pregnancy) included as categorical variables, there was still an increased risk for perinatal death associated with increasing number of teeth filled with amalgam (ORadj 1.041, 95% CI 1.008 to 1.076, p = 0.015). By an increased exposure from 0 to 16 teeth filled with amalgam, the model predicted an almost doubled odds ratio (ORadj 1.915, 95% CI 1.12 to 3.28). In groups with 1 to 12 teeth filled with amalgam the adjusted odds ratios were slightly, but not significantly, increased. The group with the highest exposure (participants with 13 or more teeth filled with amalgam) had an adjusted OR of 2.34 (95% CI 1.27 to 4.32; p = 0.007). CONCLUSION: The current findings suggest that the risk of perinatal death could increase in a dose-dependent way based on the mother's number of teeth filled with dental amalgam. However, we cannot exclude that the relatively modest odds ratios could be a result of residual confounding. Additional studies on the relationship between exposure to dental amalgam fillings during pregnancy and perinatal death are warranted.


Assuntos
Amálgama Dentário/efeitos adversos , Restauração Dentária Permanente/efeitos adversos , Modelos Biológicos , Morte Perinatal/etiologia , Mortalidade Perinatal , Adulto , Amálgama Dentário/farmacologia , Feminino , Seguimentos , Humanos , Recém-Nascido , Noruega/epidemiologia , Gravidez , Fatores de Risco
14.
Clin Oral Implants Res ; 29 Suppl 18: 309-325, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30306689

RESUMO

OBJECTIVES: The aim of this systematic review was to assess clinical evidence on adverse effects of osseointegrated implants placed among natural teeth of a residual dentition. METHODS: Seven databases were searched without restrictions up to January 2018 for clinical studies on implant infraposition (IIP) or proximal contact point (PCP) loss to the adjacent teeth. After duplicate selection, data extraction, and risk of bias assessment according to the Cochrane guidelines, random-effects meta-analyses of odds ratios (OR) or mean differences (MD) and their 95% confidence intervals (CI) were performed, followed by meta-regression and sensitivity analyses. RESULTS: A total of 27 nonrandomized studies with 1,572 patients (mean age 42.2 years/51.2% female) followed up to 18.5 years after implant placement were included. The pooled %prevalence of IIP was 50.5% (nine studies; 95% CI = 26.3-74.5%), and the pooled IIP extent was 0.58 mm (six studies; 95% CI = 0.33-0.83 mm), while IIP > 1 mm was seen for 20.8% of placed implants (five studies; 95% CI = 8.3-37.1%), and male patients were less prone to IIP than female patients (three studies; OR = 0.30; 95% CI = 0.10-0.88; p = 0.03). The pooled %prevalence of PCP loss was 46.3% (nine studies; 95% CI = 32.3-60.6%), with increase through observation time (two studies; OR = 1.09; 95% CI = 1.03-1.16; p = 0.004) and predilection for mesial PCPs (five studies; OR = 2.25; 95% CI = 1.06-4.77; p = 0.03). However, the quality of evidence was very low due to bias. CONCLUSIONS: Patients and doctors need to be aware that long-term adverse effects of dental implants among natural teeth can be observed in terms of IIP and PCP loss to the adjacent teeth.


Assuntos
Prótese Dentária Fixada por Implante , Restauração Dentária Permanente , Implantação Dentária Endo-Óssea/efeitos adversos , Implantação Dentária Endo-Óssea/métodos , Prótese Dentária Fixada por Implante/efeitos adversos , Prótese Dentária Fixada por Implante/métodos , Falha de Restauração Dentária , Restauração Dentária Permanente/efeitos adversos , Restauração Dentária Permanente/métodos , Humanos , Fatores de Tempo
15.
Clin Oral Implants Res ; 29 Suppl 18: 326-331, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30306690

RESUMO

OBJECTIVES: The aim of the present publication was to report on the EAO Workshop group-4 discussions and consensus statements on the five reviews previously prepared. These reviews provided the scientific evidence on the effect of crown-to-implant ratio, on reconstructions with cantilevers in fully and partially edentulous patients, on biological and technical complications of tilted in comparison with straight implants, and on the effects of osseointegrated implants functioning in a residual dentition. MATERIAL AND METHODS: The group discussed, evaluated, corrected where deemed appropriate, and made recommendations to the authors regarding the following five reviews submitted: (a) Is there an effect of crown-to-implant ratio on implant treatment outcomes?; (b) Implant-supported cantilevered fixed dental rehabilitations in fully edentulous patients; (c) and in partially edentulous patients; (d) Biological and technical complications of tilted implants in comparison with straight implants supporting fixed dental prostheses; (e) What are the adverse effects of osseointegrated implants functioning among natural teeth of a residual dentition? Based on the five manuscripts and the discussion among the group as well as the plenum members, the major findings were summarized, consensus statements were formulated, clinical recommendations were proposed, and areas of future research were identified. RESULTS: Crown-to-implant ratios ranging from 0.9 to 2.2 did not influence the occurrence of biological or technical complications also in single-tooth restorations. Reconstructions with cantilevers for the rehabilitation of fully and partially edentulous jaws showed high implant and reconstruction survival rates. In contrast, the rate of complications-in particular associated with veneering material-was high during the observation period of 5-10 years. The data reported were primarily derived from studies with high risk of bias. The data for single-implant reconstructions were small. There was no evidence that distally tilted implants were associated with higher failure rates and increased amounts of marginal bone loss. The data supporting these findings, however, were at high risk of bias and frequently incompletely reported. Frequent positional changes occurred between the natural teeth and the implant-supported restorations. These changes were more pronounced in younger individuals, and even though they were reduced with age, they still occurred in adult patients. Even though these changes were frequent, potential implications for the patient are unclear. CONCLUSIONS: The use of single-tooth restorations with crown-to-implant ratio in between 0.9 and 2.2 may be considered a viable treatment option. Multiunit reconstructions with cantilevers are a viable treatment option in fully and partially edentulous patients. Clinicians and patients should be aware, however, that complications are frequent and primarily related to resin material used for veneering. There is some evidence that tilting an implant does affect stability of the implant and the surrounding bone. Treatment options to tilted implants should carefully be considered, as the effect on soft tissues and on prosthesis behavior is poorly reported for tilted implants. Positional changes in the dentition in relation to implant-supported restorations occur frequently. The patient should be informed about the possible need for a treatment related to these changes in the long term.


Assuntos
Coroas/normas , Implantação Dentária Endo-Óssea/normas , Prótese Dentária Fixada por Implante/normas , Fenômenos Biomecânicos , Coroas/efeitos adversos , Implantação Dentária Endo-Óssea/efeitos adversos , Implantação Dentária Endo-Óssea/métodos , Prótese Dentária Fixada por Implante/efeitos adversos , Prótese Dentária Fixada por Implante/métodos , Restauração Dentária Permanente/efeitos adversos , Restauração Dentária Permanente/métodos , Restauração Dentária Permanente/normas , Prótese Total/efeitos adversos , Prótese Total/normas , Prótese Parcial Fixa/efeitos adversos , Prótese Parcial Fixa/normas , Humanos , Arcada Parcialmente Edêntula/cirurgia , Boca Edêntula/cirurgia , Resultado do Tratamento
16.
Eur J Oral Sci ; 126 Suppl 1: 102-105, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30178553

RESUMO

This paper discusses aspects of quality and safety improvement of the most commonly used dental restorative materials, the resin-based composites. From a patient's perspective, long-lasting resin-based restorations without complications are important. Recurrent caries and fracture are the most common causes for restoration failures. Proper handling and curing of the composites improve the mechanical properties of the restorations and increase safety by reducing exposure to residual methacrylate monomers. A number of compounds have been introduced in restorative materials to reduce the risk of recurrent caries, even though a real breakthrough has not yet been achieved. It is concluded that simple measures may improve the quality and safety of resin-based composite restorations.


Assuntos
Materiais Dentários/normas , Resinas Compostas/efeitos adversos , Resinas Compostas/normas , Resinas Compostas/uso terapêutico , Materiais Dentários/efeitos adversos , Restauração Dentária Permanente/efeitos adversos , Restauração Dentária Permanente/métodos , Restauração Dentária Permanente/normas , Humanos , Segurança do Paciente , Melhoria de Qualidade
17.
Wiad Lek ; 71(4): 879-882, 2018.
Artigo em Ucraniano | MEDLINE | ID: mdl-30099428

RESUMO

OBJECTIVE: Introduction: Oral manifestation of galvanic currents due to the presence of two and more dissimilar metals in dental restorations is rather important in prosthodontics. The aim of our study was to assess the reactions lipid's free radical oxidation and hemocoagulant properties of oral fluid in patients with disorders in oral cavity due to galvanic currents. PATIENTS AND METHODS: Materials and methods: The study had got some groups. The first one consisted of 7 healthy patients without dental prosthesis. The other one included 22 patients with dental prosthesis and they were suffered from short circuiting due dissimilar metallic restorations in oral cavity. This group we were divided into two groups: the second one - for 7 patients were produced metal ceramic fixed dental prosthesis, the third one - for 15 patients were produced whole casted fixed dental prosthesis and pressing brazed fixed dental prosthesis. To assess the process of lipid's free radical oxidation of oral fluid we studied kinetic concentration of malone dialdehyde, activity level of superoxide dismutase and catalase. Also we found out hemocoagulant activity data of oral fluid: thrombin time, prothrombin time, fibrinolytic activity, recalcification time. RESULTS: Results: In our study we observed increasing of lipid's free radical oxidation in patients of the second and third groups, which led to increasing malone dialdehyde data in third group compared with second group. In patients of second and third groups was recorded the increasing of the CAT activity in the oral fluid. Also there is the in fact decreasing in hemocoagulant properties of oral fluid, such as reducing in recalcification time, increasing in prothrombin time in the second and especially in the third groups of patients. It was marked the significant increasing of fibrinolytic activity of oral fluid in the second and third group of patients. CONCLUSION: Conclusions: The oral manifestation of electrochemical interactions due to presence of dissimilar metallic restorations led to shift in oral cavity's homeostasis. This statement we can verify with results of our study. In patients with oral manifestation of galvanic currents were observed the increasing in activity of the reactions of lipid's free radical oxidation in oral fluid, changes in antioxidative enzymes and in local homeostasis of oral fluid.


Assuntos
Implantes Dentários/efeitos adversos , Materiais Dentários/efeitos adversos , Prótese Dentária/efeitos adversos , Restauração Dentária Permanente/efeitos adversos , Eletrogalvanismo Intrabucal , Radicais Livres/metabolismo , Adulto , Eletroquímica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estresse Oxidativo/efeitos dos fármacos , Espécies Reativas de Oxigênio/metabolismo
18.
Clin Implant Dent Relat Res ; 20(5): 806-813, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30126038

RESUMO

BACKGROUND: The type of cement used in cemented fixed implant-supported restorations influences formation of undetected excess cement and composition of the peri-implant biofilm. Excess cement and dysbiosis of the biofilm involve the risk of peri-implant inflammation. PURPOSE: The aim of the study was to investigate the impact of two different cements on the peri-implant biofilm and inflammation. MATERIALS AND METHODS: In an observational study, the suprastructures of 34 patients with cemented fixed implant-supported restorations were revised. In 20 patients, a methacrylate cement (Premier Implant cement [PIC]) and in 14 patients, a zinc oxide eugenol cement (Temp Bond [TB]) were used. After revision, TB was used for recementation. During revision and follow-up after 1 year, microbial samples were obtained. RESULTS: Excess cement was found in 12 (60%) of the 20 patients with PIC. Suppuration was observed in two (25%) implants with PIC without excess cement (PIC-) and in all 12 (100%) implants with PIC and excess cement (PIC+). Implants cemented with TB had neither excess cement nor suppuration. The taxonomic analysis of the microbial samples revealed an accumulation of periodontal pathogens in the PIC patients independent of the presence of excess cement. Significantly, fewer oral pathogens occurred in patients with TB compared to patients with PIC. TB was used in all cases (PIC and TB) for recementation. In the follow-up check, suppuration was not found around any of the implants with PIC-, only around one implant with PIC+ and around one implant with TB. Bacterial species associated with severe periodontal infections that were abundant in PIC- and PIC+ samples before the revision were reduced after 1 year to levels found in the TB samples. CONCLUSIONS: The revision and recementation with TB had a positive effect on the peri-implant biofilm in cases with PIC. The cementation of suprastructures on implants with TB is an alternative method to be considered.


Assuntos
Biofilmes/crescimento & desenvolvimento , Cimentos Dentários/uso terapêutico , Implantes Dentários/microbiologia , Peri-Implantite/etiologia , Adulto , Idoso , Cimentos Dentários/efeitos adversos , Implantes Dentários/efeitos adversos , Prótese Dentária Fixada por Implante/efeitos adversos , Prótese Dentária Fixada por Implante/métodos , Restauração Dentária Permanente/efeitos adversos , Restauração Dentária Permanente/métodos , Eugenol/efeitos adversos , Eugenol/uso terapêutico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Óxido de Zinco/efeitos adversos , Óxido de Zinco/uso terapêutico
19.
BMC Oral Health ; 18(1): 144, 2018 08 22.
Artigo em Inglês | MEDLINE | ID: mdl-30134965

RESUMO

BACKGROUND: Tooth-coloured polymer-based dental filling materials are currently the first choice for dental restorative treatment in many countries. However, there are some concerns about their safety. It has been shown that substances known as endocrine disrupters, which might pass through the placental barrier, are released from these materials within the first hours after curing. Thus, the placement of polymer-based dental fillings in pregnant women may put the vulnerable foetus at risk. Large epidemiological studies exploring the risk of having polymer-based dental materials placed during pregnancy are lacking. The aim of this study was to investigate the association between the placement of polymer-based dental fillings during pregnancy and adverse birth outcomes. METHODS: This study is based on data from the large Norwegian Mother and Child Cohort Study (MoBa). The information about dental treatment during pregnancy was obtained from questionnaires sent to the participating women during weeks 17 and 30 of pregnancy. Reported placement of "white fillings" was used as exposure marker for having received polymer-based dental filling materials. Only singleton births were included in the present study. Data were linked to the Medical Birth Registry of Norway. Logistic regression models that included the mother's age, level of education, body mass index, parity, and smoking and alcohol consumption during pregnancy were used to estimate the odds ratio (OR) and 95% confidence interval (CI). Different adverse birth outcomes were of interest in the present study. RESULTS: Valid data were available from 90,886 pregnancies. Dentist consultation during pregnancy was reported by 33,727 women, 10,972 of whom had white fillings placed. The adjusted logistic regression models showed no statistically significant association between having white dental fillings placed during pregnancy and stillbirth, malformations, preterm births, and low or high birth weight. CONCLUSIONS: In this study, women who reported white fillings placed during pregnancy had no increased risk for adverse birth outcomes compared with women who did not consult a dentist during pregnancy. Thus, our findings do not support the hypothesis of an association between placement of polymer-based fillings during pregnancy and adverse birth outcomes.


Assuntos
Cárie Dentária/terapia , Materiais Dentários/toxicidade , Restauração Dentária Permanente/efeitos adversos , Feto/efeitos dos fármacos , Polímeros/toxicidade , Adulto , Feminino , Humanos , Noruega , Gravidez , Resultado da Gravidez , Fatores de Risco , Inquéritos e Questionários
20.
Clin Implant Dent Relat Res ; 20(5): 814-823, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30039915

RESUMO

BACKGROUND: The implant-abutment connection (IAC) is known to be a key factor for the long-term stability of peri-implant tissue. PURPOSE: The aim of the present in vitro study was to detect and measure the mechanical behavior of different IACs by X-ray imaging. MATERIALS AND METHODS: A total of 20 different implant systems with various implant dimensions and IACs (13 conical-, 6 flat-, and 1 gable-like IAC) have been tested using a chewing device simulating dynamic and static loading up to 200 N. Micromovements have been recorded with a high-resolution, high-speed X-ray camera, and gap length and gap width between implant and abutment have been calculated. Furthermore, X-ray video sequences have been recorded to investigate the sealing capacity of different IACs. RESULTS: Out of the 20 implant systems, eight implant systems with a conical IAC showed no measurable gaps under static and dynamic loading (200 N). By contrast, all investigated implant systems with a flat IAC showed measurable gaps under dynamic and static loading. X-ray video sequences revealed that a representative conical IAC had sufficient sealing capacity. CONCLUSION: Within the limits of the present in vitro study, X-ray imaging showed reduced formation of microgaps and consecutive micromovements in implants with conical IAC compared to flat IACs.


Assuntos
Projeto do Implante Dentário-Pivô , Coroas/efeitos adversos , Dente Suporte/efeitos adversos , Projeto do Implante Dentário-Pivô/efeitos adversos , Projeto do Implante Dentário-Pivô/métodos , Restauração Dentária Permanente/efeitos adversos , Restauração Dentária Permanente/instrumentação , Restauração Dentária Permanente/métodos , Análise do Estresse Dentário , Humanos , Técnicas In Vitro , Radiografia Dentária , Estresse Mecânico , Torque , Suporte de Carga
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA