Crown adjustment and chairside efficiency of single-unit restorations fabricated from immediate and staged impressions using a digital workflow for posterior implants.

PURPOSE: This is a clinical study to compare immediate and staged impression methods in a complete digital workflow for single-unit implants in the posterior area. MATERIALS AND METHODS: Sixty patients requiring single-unit implant crowns were enrolled. Forty patients were assigned to the test group, immediate digital impression after implant surgery with crown delivery 4 months later. The remaining 20 patients were assigned to the control group, staged digital impressions 4 months after implant surgery, and crown delivery 1 month later. Both workflows involved free-model CAD-CAM crown fabrications. The crowns were scanned before and after clinical adjustment using an intraoral scanner (TRIOS Color; 3Shape). Two 3D digital models were trimmed and superimposed to evaluate the dimensional changes using Geomagic Control software. Chairside times for the entire workflow were recorded. Kruskal-Wallis was performed to compare crown adjustments between two groups, while One-way ANOVA was used to compare chairside time durations between the test and control groups. RESULTS: All crowns were delivered without refabrication. The average maximum occlusion adjustment of crowns was -353.2 ± 207.1 µm in the test group and -212.7 ± 150.5 µm in the control group (p = 0.02). The average area of occlusal adjustment, measured as an area of deviation larger than 100 µm, was 14.8 ± 15.3 and 8.4 ± 8.1 mm2 in the test and control groups, respectively (p = 0.056). There were no significant differences in the mesial and distal contact adjustment amounts, or the maximum deviations of the proximal area, between the two groups. The mean chair-side time was 50.25 ± 13.48 and 51.20 ± 5.34 min in the test and control groups, respectively (p = 0.763). CONCLUSIONS: The immediate impression method in the digital workflow for single-unit implants required more occlusal adjustments of crowns but showed similar chairside times compared to the staged impression method.

Does the Use of Surface Electromyography Could Improve Quality of Life among Patients Rehabilitated by Mandibular Overdentures on Different Attachments?

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.

Influência da técnica de preparo sobre o contorno cervical dos laminados cerâmicos: relato de caso / Influence of the preparation technique on the cervical contour of ceramic laminates: a case report / Influencia de la técnica de preparación en el contorno cervical de los laminados cerámicos: reporte del caso

Introdução: Devido à crescente demanda estética, a odontologia restauradora se renova na intenção de alcançar melhores resultados na harmonia do sorriso. Entretanto, a atenção deve voltar-se também aos tecidos periodontais, visto que há uma integração entre material restaurador e os tecidos. Objetivo:Descrever e discutir as etapas clínicas para a confecção de laminados cerâmicos, atentando-se a preparos minimamente invasivos, contorno cervical e fatores que podem intervir na longevidade do procedimento.Relato de caso:Paciente do sexo masculino, 28 anos de idade, compareceu a Associação Brasileira de Odontologia, seção de Alagoas, relatando insatisfação em relação ao tamanho dos seus dentes. Os arcos superior e inferior foram moldados para a obtenção dos modelos de estudo e enceramento diagnóstico. Ao início do tratamento foi orientado ao paciente clareamento dental pela técnica combinada. O preparo dos dentes foi guiado por uma matriz de silicone, sendo estes uniformes e conservadores, seguido de moldagem, fase laboratorial e cimentação final. Finalizado o caso foi realizado o ajuste oclusal solicitando ao paciente que realizasse movimentos de lateralidade e protrusão. Conclusões:A técnica do preparo influência na longevidade dos laminados cerâmicos, por relacioanar-se à adesão e a saúde periodontal. O preparo deve ser mínino e limitado ao esmalte dental sempre que possível, determinando assim um maior e melhor prognóstico (AU).

Introduction:Due to the growing aesthetic demand, restorative dentistry is renewed to achieve better results in smile harmony. However, attention should also be turned to periodontal tissues since there is an integration between restorative material and tissues. Objective:To describe and discuss the clinical steps for the manufacture of laminate veneers, paying attention to minimally invasive preparations, cervical contour, and factors that can intervene in the procedure's longevity. Case report:A 28-year-old male patient attended the Brazilian Dental Association, the Alagoas section, reporting dissatisfaction with his teeth' size. The upper and lower arches were molded to obtain the study and diagnostic waxing models. At the beginning of treatment, the patient was instructed by the combined technique. After the case, the occlusal adjustment was performed, asking the patient to perform laterality and protrusion movements. Conclusions:The preparation technique influences the longevity of laminate veneers due to adherence and periodontal health. The preparation should be minimal and limited to dental enamel whenever possible, thus determining a higher and better prognosis (AU).

Introducción: Debido a la creciente demanda estética, la odontología restauradora se renueva para lograr mejores resultados en la armonía de la sonrisa. Sin embargo, también se debe prestar atención a los tejidos periodontales ya que existe una integraciónentre el material restaurador y los tejidos.Objetivo: Describir y discutir los pasos clínicos para la confección de carillas laminares, prestando atención a las preparaciones mínimamente invasivas, al contorno cervical y a los factores que pueden intervenir en la longevidad del procedimiento.Reporte del caso: Un paciente masculino de 28 años asistió a la Asociación Dental Brasileña, sección de Alagoas, reportando insatisfacción con el tamaño de sus dientes. Los arcos superior e inferior fueron moldeados para obtener los modelos de depilación de estudio y diagnóstico. Al comienzo del tratamiento, el paciente fue instruido por la técnica combinada. La preparación de los dientes fue guiada por una matriz de silicona, siendo estas uniformes y conservadoras, seguidas de moldeo, fase de laboratorio y cementación final. Después del caso, se realizó el ajuste oclusal, pidiendo al paciente que realizara movimientos de lateralidad y protuberancia. Conclusiones: La técnica de preparación influye en la longevidad de los laminados cerámicos, debido a la adherencia y la salud periodontal. La preparación debe ser mínima y limitada al esmalte dental siempre que sea posible, determinando así un pronóstico más alto y mejor (AU).

Effect of occlusal adjustment on postoperative pain after root canal treatment: a randomized clinical trial

Abstract The aim of this prospective, randomized, clinical study was to analyze the influence of occlusal adjustment on the prevalence of postoperative pain after endodontic treatment. Seventy-eight patients, diagnosed with symptomatic irreversible pulpitis with indication for endodontic treatment, were selected to participate in the study. The participants were randomized and divided into two groups: in the occlusal adjustment group (OAG), endodontic treatment was performed with subsequent occlusal adjustment. In the control group (CG), endodontic treatment was performed without occlusal adjustment. Treatments were performed by the same operator. Pain occurrence and intensity were recorded on two scales: the verbal rating scale (VRS) and numerical rating scale (NRS). Pain assessment was carried out by a second examiner, blinded to the experiment, 6, 24 and 72 h after endodontic treatment. Data were analyzed using Mann-Whitney, chi-squared, and Fisher's exact tests. In the occlusal adjustment group, 71.1% reported postoperative pain and 67.5% reported pain in the control group. At the 6-hour assessment, 21 individuals reported pain in the occlusal adjustment group and 24 in the control group (p=0.672). At the 24-hour assessment, 18 and 19 individuals reported pain (p=0.991) and at the 72-hour assessment, 8 and 4 reported pain (p=0.219), respectively. Occlusal adjustment did not influence the prevalence of postoperative pain of endodontically treated teeth with symptomatic irreversible pulpitis.

Resumo O objetivo deste estudo prospectivo, randomizado e clínico foi analisar a influência do ajuste oclusal na prevalência de dor pós-operatória após o tratamento endodôntico. Setenta e oito pacientes, diagnosticados com pulpite irreversível sintomática com indicação de tratamento endodôntico, foram selecionados para participar do estudo. Os participantes foram randomizados e divididos em dois grupos: no grupo de ajuste oclusal (GAO), foi realizado tratamento endodôntico com posterior ajuste oclusal. No grupo controle (GC), o tratamento endodôntico foi realizado sem ajuste oclusal. Os tratamentos foram realizados pelo mesmo operador. A ocorrência e a intensidade da dor foram registradas em duas escalas: a escala de classificação verbal (VRS) e a escala de classificação numérica (NRS). A avaliação da dor foi realizada por um segundo examinador, cego para o experimento, 6, 24 e 72 horas após o tratamento endodôntico. Os dados foram analisados utilizando testes de Mann-Whitney, qui-quadrado e exato de Fisher. No grupo de ajuste oclusal, 71,1% relataram dor pós-operatória e 67,5% relataram dor no grupo controle. Na avaliação de 6 horas, 21 indivíduos relataram dor no grupo de ajuste oclusal e 24 no grupo controle (p=0,672). Na avaliação de 24 horas, 18 e 19 indivíduos relataram dor (p=0,991) e, na avaliação de 72 horas, 8 e 4 relataram dor (p=0,219), respectivamente. O ajuste oclusal não influenciou a prevalência de dor pós-operatória após o tratamento endodôntico em dentes com pulpite irreversível sintomática.

Intervención temprana de la mordida cruzada por la pista directa de Planas: relato de siete años de seguimiento / Early Intervention of Crossbite by Planas Direct Tracks: Follow up Report After Seven Years / Intervenção precoce da mordida cruzada pela Pistas Diretas de Planas: relato de sete anos de seguimento

Resumen Introducción: entre las maloclusiones, la mordida cruzada es la de mayor prevalencia entre los niños en edad preescolar y se considera la principal depreciadora del sistema estomatognático, con un alto riesgo de desarrollar secuelas musculoesqueléticas irreparables en la edad adulta. Por lo tanto, es fundamental elegir un tratamiento eficaz que no requiera la cooperación directa del paciente y que utilice técnicas simples de ortodoncia. El objetivo de este artículo es informar la eficacia del tratamiento de rehabilitación neuroclusal (RNO) con la técnica de las pistas directas de Planas en la corrección temprana de la mordida cruzada posterior y el seguimiento de su estabilidad oclusal durante siete años. Presentación del caso: niña de 4 años de edad, que usó biberón, diagnosticada con mordida cruzada posterior funcional unilateral izquierda y desviación de la línea media. Para el tratamiento de la RNO, se realizaron los ajustes oclusales en los dientes 63, 64 y 65, y después de la desprogramación neuromuscular, se confeccionaron las pistas directas de Planas en los dientes cruzados. Después de 29 días, se corrigió la mordida y se hicieron ajustes oclusales para proporcionar una mayor armonía oclusal. Hubo monitoreamiento cada seis meses durante siete años para verificar el equilibrio y la estabilidad del tratamiento. Conclusiones: la RNO con el uso de pista directa de Planas fue eficaz para corregir la mordida cruzada posterior con una técnica simple y de bajo costo que puede ejecutar el clínico general.

Abstract Introduction: Among malocclusions, that of cross-bite is the most prevalent among preschool children and is considered to be the main depreciator of the stomatognathic system and is further linked to a high risk of developing irreversible musculoskeletal sequelae in adulthood. Thus, it is important to choose an effective treatment early on that does not require the direct cooperation of the patient and that utilizes simple orthodontic techniques in its execution. The objective of this study was to report the efficacy of the Neuroclusal Rehabilitation (RNO) treatment, with the Planas Direct Tracks technique in a case of early treatment of posterior crossbite, and the follow up of its occlusal stability for seven years. Case presentation: a 4-year-old female patient, who was bottle-fed, was diagnosed with a left unilateral functional posterior crossbite and midline deviation. For treatment of RNO, occlusal adjustments were made on the teeth 63, 64 and 65 and after neuromuscular deprogramming, the Direct Planks were made in the crossed teeth. After 29 days, the bite was corrected, and occlusal adjustments were made in order to provide greater occlusal harmony. Monitoring and evaluation took place every six months for seven years in order to verify the balance and stability of the treatment. Conclusion: the RNO treatment with the use of Planas Direct Tracks is an effective solution for the correction of posterior crossbite using a simple, low-cost technique that can be performed by general practitioners.

Resumo Introdução: entre as más oclusões, a mordida cruzada é a de maior prevalência entre as crianças em idade pré-escolar, e se considera a principal depreciadora do sistema estomatognático, com um alto risco de desenvolver sequelas musculoesqueléticas irreparáveis na idade adulta. Portanto, é fundamental escolher um tratamento eficaz que não requeira a cooperação direta do paciente e que utilize técnicas simples de ortodontia em sua execução. O objetivo deste estudo foi informar a eficácia do tratamento de Reabilitação Neuroclusal (RNO), com a técnica das Pistas Diretas de Planas na correto precoce da mordida cruzada posterior e o seguimento de sua estabilidade oclusal durante 7 anos. Apresentação do caso: paciente de sexo feminino de 4 anos de idade, que usou mamadeira, diagnosticada com mordida cruzada posterior funcional unilateral esquerda e desvio da linha média. Para o tratamento da RNO, se realizaram os ajustes oclusais nos dentes 63, 64 e 65, depois da desprogramação neuromuscular, se confeccionaram as Pistas Diretas de Planas nos dentes cruzados. Depois de 29 dias, se corrigiu a mordida e se fizeram ajustes oclusais para proporcionar uma maior harmonia oclusal. O monitoramento se realizou cada seis meses por 7 anos para verificar o equilíbrio e a estabilidade do tratamento. Conclusões: a RNO com o uso de Pista Direta Planas foi eficaz para a correção da mordida cruzada posterior com uma técnica simples, de baixo custo que pode ser realizada pelo clínico geral.

Accuracy of Cone Beam Computed Tomography in the Assessment of Mandibular Molar Furcation Defects

Abstract Objective: To evaluate the accuracy of cone-beam computed tomography (CBCT) in the assessment of mandibular molar furcation defects. Material and Methods: Thirty patients with furcation defects were selected, oral hygiene instructions, scaling, and root planing with ultrasonic devices and hand instruments and occlusal adjustments were performed. Pre-surgical clinical measurements were carried out at the buccal aspect of the selected mandibular molars. The horizontal furcation measurements were measured with a Nabers Probe starting at the furcation entrance to the greatest horizontal depth. The degree of furcation involvement was graded from 0 to III. Bone loss in the horizontal and vertical direction and the width of the furcation entrance were measured on CBCT and after reflecting the full-thickness flap and debridement of the defects. The data were analyzed using t-test and Pearson's correlation coefficient. Results: The width of furcation entrance in clinical method was 3.27 ± 0.77, while in CBCT method was 3.35 ± 0.71, clinically the vertical bone loss was 3.61±1.09, while in CBCT was 3.57 ± 1.15, horizontal bone loss in clinical method was 5.08 ± 2.21, while in CBCT was 5.11 ± 2.23. No significant difference between the two methods was noted, and a high correlation between the two methods was observed. With regards to the agreement between the two methods of assessment, the width of furcation entrance revealed a difference between the two methods by 0.08 ± 0.21, while vertical bone loss showed difference between the two methods by -0.04 ± 0.19, the horizontal bone loss showed a mean difference between the two methods by 0.03 ± 0.21. Conclusion: CBCT provided high accuracy for the furcation involvement detection and anatomy of surrounding periodontal tissues.

Tratamiento de ortodoncia en un paciente con resorción radicular externa: reporte de un caso clínico / Orthodontic treatment in a patient with external root resorption: report of a clinical case

La resorción radicular externa generalizada representa un problema a la hora de realizar un tratamiento de ortodoncia, requiere la toma de decisiones que siempre debe estar fundamentada en el diagnóstico llevado a cabo mediante un equipo interdisciplinario. Objetivo: Describir el tratamiento a una paciente con resorción radicular generalizada ante un proceso completo de diagnóstico que debe ser seguido, buscando preservar la estructura dentaria y la inserción conectiva. Caso clínico: Mujer de 14 años de edad, con motivo de consulta: «tengo un diente fuera de lugar¼, con un biótopo dolicofacial, y maloclusión clase II esquelética, clase I molar, clase I canina, discrepancia osteodentaria negativa, perfil convexo, incompetencia labial, incisivo lateral superior cruzado, resorción radicular generalizada, que predomina en incisivos anteriores superiores. El tratamiento fue ortodoncia (con aparatología fija Roth slot 22), extracciones de segundos premolares superiores e inferiores, cierre de espacios acelerado y ajuste oclusal. Resultado: Al finalizar el tratamiento, se logró mejorar la estética, preservación de la inserción conectiva, estructura dental y una oclusión funcional. Conclusiones: Los pacientes con resorción radicular generalizada necesitan ser diagnosticados correctamente, es importante saber que los resultados se limitan a utilizar fuerzas ligeras y controladas, y es de gran utilidad el aprovechamiento del fenómeno de aceleración regional que está dado por las extracciones dentales, cerrando los espacios desde estadios iniciales del tratamiento (AU)

Generalized external root resorption represents a problem when performing orthodontic treatment, it requires making decisions that should always be based on the diagnosis carried out by an interdisciplinary team. Objective: To describe the treatment of a patient with generalized radicular resorption with a complete diagnostic process that must be followed in order to preserve the tooth structure and the connective insertion. Case report: 14-year-old female patient, with reason for consultation: «I have a tooth out of place¼', with a dolichofacial biotype, class II skeletal malocclusion, class I molar, class I dog, negative osseous discrepancy, convex profile, lip incompetence, superior lateral incisor crossed, generalized radicular resorption, which predominates in upper anterior incisors. The treatment was orthodontics (with Roth slot 22 fixed appliances), extractions of upper and lower second premolars, accelerated space closure and occlusal adjustment. Result: At the end of the treatment, aesthetics, preservation of the insertion and dental structure and a functional occlusion were achieved. Conclusions: Patients with generalized root resorption need to be diagnosed correctly, it is important to know that the results are limited to use light and controlled forces and it is very useful to take advantage of the phenomenon of regional acceleration that is given by the dental extractions, closing the spaces from initial stages of treatment (AU)

Reabilitação neuroclusal em paciente odontopediátrico com mordida cruzada posterior unilateral: relato de caso clínico / Neuro-occlusal rehabilitation in pediatric dental patient with unilateral posterior crossbite: clinical case report

Objetivo: relatar a sequência clínica de tratamento para descruzar uma mordida cruzada posterior unilateral na dentição decídua por meio da reabilitação neuroclusal. Relato de caso: o caso clínico foi realizado em um paciente do sexo masculino, com 5 anos de idade, diagnosticado com mordida cruzada posterior unilateral funcional do lado direito. Após a verificação de interferências dentais nos caninos e molares em oclusão cêntrica, realizaram-se os ajustes oclusais. Seguiu-se então o protocolo para confecção de pistas diretas de Planas, utilizando resina composta em planos inclinados na metade vestibular da face oclusal dos dentes 84 e 85 e na face vestibular dos dentes 53, 54 e 55. Logo após a confecção das pistas, observou-se a correção da mordida cruzada e a estabilidade na mudança postural da mandíbula. Considerações finais: a reabilitação neuroclusal por meio de pistas diretas de Planas apresenta grande eficácia na correção da mordida cruzada posterior, proporcionando estabilidade mandibular e estímulo para o crescimento e desenvolvimento crânio-maxilo-facial. (AU)

Objective: To report the clinical treatment sequence to uncross a unilateral posterior crossbite in deciduous dentition using neuro-occlusal rehabilitation. Case report: The clinical case was performed in a 5-year-old male patient diagnosed with a functional unilateral posterior crossbite on the right side. After verifying dental interferences with canines and molars in centric occlusion, the occlusal adjustments were performed. The protocol for producing Planas direct tracks was followed using composite resin in inclined planes in the buccal half of the occlusal surface of teeth 84 and 85 and in the buccal surface of teeth 53, 54, and 55. After the preparation of tracks, the crossbite correction and the stability in postural mandibular change were observed. Final considerations: Neuro-occlusal rehabilitation using Planas direct tracks is highly effective in correcting posterior crossbite, providing mandibular stability and stimulus for the growth and development of the maxillofacial skull. (AU)

Lesões cervicais não cariosas: uma abordagem no controle da dor e tratamento

Objetivo: o objetivo deste trabalho é relatar um caso clínico de hipersensibilidade severa associada a múltiplas lesões cervicais não cariosas, entender o mecanismo de ação e a eficácia dos agentes dessensibilizantes. Relato de caso: paciente do gênero masculino, 38 anos de idade, compareceu à clínica da Faculdade Morgana Potrich com um quadro de hipersensibilidade em vários elementos, bem como, a presença de lesão cervical não cariosa em alguns desses elementos. Durante a anamnese o paciente relatou o hábito de escovar os dentes várias vezes ao dia logo após se alimentar, exercendo muita força durante o ato, relatou também fazer consumo diário de cerveja que possui um pH ácido. Ao realizar análise da oclusão notou-se um desequilíbrio oclusal e contato prematuro nos dentes 24 e 34. O tratamento de escolha para esse caso foi o ajuste oclusal seguido do uso de dessensibilizantes e restaurações em resina composta nos dentes que havia a presença de lesões cervicais não cariosas com perda de estrutura dentária. Considerações finais: após esse tratamento, realizado em várias sessões, foi possível devolver ao paciente a função e eliminar a dor provocada pela hipersensibilidade, proporcionando uma melhor qualidade de vida para esse paciente.

Objective: This study aims to report a clinical case of severe hypersensitivity associated with multiple non-carious cervical lesions and to understand the mechanism of action and the efficacy of desensitizing agents. Case report: A 38-year-old male patient attended the clinic at Faculdade Morgana Potrich with the hypersensitivity of several elements and the presence of non-carious cervical lesion in some of these elements. During anamnesis, the patient reported the habit of toothbrushing several times a day soon after eating, exerting a lot of force in such activity; he also reported the daily consumption of beer, which has an acidic pH. The occlusal analysis showed occlusal disorder and premature contact in teeth 24 and 34. The treatment of choice for this case was the occlusal adjustment followed by the use of desensitizers and composite resin restorations on the teeth with non-carious cervical lesions with loss of dental structure. Final considerations: After this treatment, which was performed in several sessions, it was possible to return function to the patient and eliminate the pain caused by hypersensitivity, providing a better quality of life for this patient.(au)

Eficácia de dois sistemas de polimento na devolução da lisura superficial de restaurações cerâmicas vítreas em dentes posteriores: estudo clínico, randomizado, prospectivo e cego / Efficacy of two polishing systems on the return of surface smoothness of glass-ceramic restorations in posterior teeth: clinical, randomized, prospective and blinded study

O objetivo do estudo foi verificar o repolimento do dissilicato de lítio em boca variando o uso de dois sistemas de polimento em restaurações posteriores. Adicionalmente, o comportamento das restaurações cerâmicas foi avaliado longitudinalmente segundo os critérios USPHS modificados. Participaram do estudo 12 pacientes que necessitavam de pelo menos 2 dentes posteriores bilaterais a serem restaurados com cerâmica em dissilicato de lítio monolítica, totalizando 62 restaurações analisadas. As restaurações foram alocadas em dois grupos, sendo: G1 - 31 restaurações cerâmicas utilizando o sistema de polimento Exa-Cerapol, feltro e pasta diamantada, e G2: idêntico ao G1, utilizando o sistema de polimento Shofu, feltro e pasta diamantada. A escolha das restaurações em cada grupo foi randomizada, segundo o conceito split-mouth design. O atendimento foi realizado por profissionais graduados, calibrados na técnica, porém não cientes das razões do estudo. As restaurações foram replicadas com resina epóxi em 3 momentos: após a cimentação (T0); após o ajuste oclusal (T1); e após o polimento (T2), para análise quantitativa em rugosímetro. Amostras representativas de cada grupo nos mesmos tempos foram levadas para análise em microscópio confocal a laser (LSCM). O comportamento das restaurações cerâmicas foi avaliado longitudinalmente nos tempos (T): T0 ­ após a realização do polimento, T1 -30 dias após, T2 -180 dias após. Não houve diferença estatisticamente significante entre os grupos para os tempos testados (p>0,05). Diferenças estatisticamente significantes foram observadas intra grupos, entre os tempos T0 e T1 e entre T1 e T2 (p<0,05), tanto em G1 quanto em G2. A taxa de sobrevida das restaurações sem fraturas foi de 100%; a sobrevida por ocorrência de complicações biológicas com troca de restaurações (n=1) foi de 98,4%; índice de solturas sem substituição de restauração (n=6) foi de 96,9%. Conclui-se que os dois sistemas foram eficazes no repolimento intrabucal das restaurações em dissilicato de lítio monolítico. O protocolo clínico realizado pelos profissionais graduados se mostrou eficaz com ausência de trincas/fraturas no período de 6 meses de acompanhamento(AU)

The aim of the study was to verify the lithium disilicate repolishing in the mouth by varying the use of two polishing systems in posterior restorations. Additionally, the behavior of ceramic restorations was longitudinally evaluated according to the modified USPHS criteria. The study included 12 patients who needed at least 2 bilateral posterior teeth to be restored with ceramic in monolithic lithium disilicate, totaling 62 restorations analyzed. The restorations were allocated into two groups: G1 - 31 ceramic restorations using the Exa-Cerapol polishing system, felt and diamond paste, and G2: identical to G1 using the Shofu polishing system, felt and diamond paste. The choice of restorations in each group was randomized according to the split-mouth design concept. The service was performed by graduated professionals, calibrated in the technique, but not aware of the reasons for the study. The restorations were replicated with epoxy resin in 3 moments: after cementation (T0); after occlusal adjustment (T1); and after polishing (T2), for quantitative roughness analysis. Representative samples from each group at the same times were taken for analysis by confocal laser microscope (LSCM). The behavior of ceramic restorations was evaluated longitudinally at the times (T): T0 - after polishing, T1 -30 days after, T2 -180 days after. There was no statistically significant difference between the groups for the tested times (p> 0.05). Statistically significant differences were observed between groups T0 and T1 and between T1 and T2 (p <0.05) in both G1 and G2. The survival rate of restorations without fractures was 100%; survival due to the occurrence of biological complications with restoration replacement (n = 1) was 98.4%; Release rate without restoration replacement (n = 6) was 96.9%. It was concluded that both systems were effective in intraabucal repolishing of monolithic lithium disilicate restorations. The clinical protocol performed by the graduated professionals proved to be effective with no cracks / fractures within 6 months of follow-up(AU)

Occlusal Equilibration for the Management of Temporomandibular Disorders.

The concept of equilibrating the occlusion to treat and/or to prevent temporomandibular disorders found its background in the old precepts of gnathology, but an assessment of the available literature as well as an appraisal of its biological rationale suggests that it is not recommended for routine use.

Craneosinostosis sindrómica: Características craneodentofaciales, tratamiento ortodón-tico-quirúrgico y factores asociados a tipos de síndrome / Craniossinostose sindrômica: Características craniodentofaciais, tratamento ortodônti-co-cirúrgico e fatores associados aos tipos de síndrome / Syndromic Craniosynostosis: Craniodentofacial features, orthodontic-surgical treatment and factors associated to types of syndrome

Objetivos: Describir las características craneodentofaciales, tratamientos ortodónticos-quirúrgicos y establecer una aso-ciación entre los tipos de síndrome presentes en pacientes con craneosinostosis sindrómica (CS). Material y métodos: Estudio retrospectivo de registros médicos y de ortodoncia de pacientes con CS. Los datos se recogieron en una forma específica y se sometieron a un análisis estadístico descriptivo para observar la distribución de frecuencias y se utilizó la prueba de Chi cuadrado con un nivel de significación del 5% para asociar el síndrome y los tipos de variables. Resultados: El síndrome de Crouzon fue el tipo predominante (59.2%) y la braquicefalia fue el tipo más frecuente de craneosinostosis (63.6%). Hubo una asociación significativa entre las variables braquicefalia (p = 0,014), presencia de paladar hendido (p = 0,043), mordida cruzada posterior (p = 0,013), distracción osteogénica realizada por elásticos intermaxilares (p = 0,030), barra de Erich (p = 0.007) y la extracción (p = 0.041) y los síndromes estudiados. Conclusión: Los pacientes con CS a menudo tienen cambios craneodentofaciais y algunas variables tienen asociaciones significativas en relación con los tipos de síndromes.

Objectives: Describe the craniodentofacial characteristics, orthodontic-surgical treatments and establish an association between the syndrome types present in patients with syndromic craniosynostosis (SC). Material and methods: Retros-pective study of medical and orthodontic records of patients with SC. Data was collected on a specific form and subjected to descriptive statistical analysis to observe the distribution of frequencies and chi-square test with level of significance of 5% was used to associate syndrome and the types of variables. Results: Crouzon syndrome was the predominant type (59.2%) and brachycephalia was the most prevalent type of craniosynostosis (63.6%). There was a significant association between the variables brachycephaly (p=0.014), presence of cleft palate (p=0.043), posterior cross bite (p=0.013), distrac-tion osteogenesis performed by intermaxillary elastics (p= 0.030), Erich bar (p= 0.007) and extraction (p=0.041) and the syndromes studied. Conclusion: Patients with SC often have craniodentofaciais changes and some variables had signifi-cant associations in relation to the types of syndromes.

Descrever as características craniodentofaciais, tratamentos ortodôntico-cirúrgicos e estabelecer uma associação entre os tipos de síndrome presentes em pacientes com craniossinostose sindrômica (CS). Material e métodos: Estudo retrospectivo de prontuários médicos e ortodônticos de pacientes com CS. Os dados foram coletados em formulário específico e submetidos à análise estatística descritiva para observar a distribuição das frequências e o teste qui-quadrado com nível de significância de 5% foi utilizado para associar a síndrome e os tipos de variáveis. Resultados: A síndrome de Crouzon foi o tipo predominante (59,2%) e a braquicefalia foi o tipo mais prevalente de craniossinostose (63,6%). Houve associação significativa entre as variáveis braquicefalia (p = 0,014), presença de fissura de palato (p = 0,043), mordida cruzada posterior (p = 0,013), distração osteogênica realizada pelos elásticos intermaxilares (p = 0,030), barra de Erich (p= 0,007) e extração (p = 0,041) e as síndromes estudadas. Conclusão: Pacientes com CS frequentemente apresentam alterações craniodentofaciais e algumas variáveis apresentaram associações significativas em relação aos tipos de síndromes.

Occlusal adjustment after local resection of type 1 condylar osteochondroma.

To evaluate the feasibility of the orthodontic traction after local resection of the condylar osteochondroma (OC).From November 2011 to September 2016, consecutive patients with condylar OC who underwent orthodontic extraction after local resection of the mass were reviewed. Clinical data and cone-beam computed tomography (CT) were obtained before treatment (T0), 1 week after surgery (T1), and at least 6-month follow-up after OC resection (T2). Repeated-measures analysis of variance with Bonferroni multiple-comparison test was used to compare the 3-dimensional cephalometric variables at different time points and the paired t test was used to compare changes of temporomandibular joint (TMJ) space between the 2 sides at T1 and T2.The sample consisted of 23 patients (16 females and 7 males). The mean postoperative follow-up interval was 10.9 months. No recurrence was observed during the postoperative follow-up period. Facial symmetry and occlusion were greatly improved. B deviation and the distance of gonion on the OC-affected side to the Frankfort horizontal (FH) were significantly improved from T0 to T1 and T2 (P < .01). The anterior space (AS) and superior space (SS) of the OC-affected side were significantly larger than that of the contralateral side at T1 in parasagittal CT views (P < .05), while no difference was found between the two sides at T2.Local resection is an effective technique with less damage to the condyle. The application of postoperative directional traction could guide the condyle into the fossa, achieve normal TMJ space and stable occlusion, and eventually provide functional and esthetic outcomes.

Clinical protocol for occlusal adjustment: Rationale and application.

BACKGROUND: Occlusal adjustment can optimize the result of orthodontics, orthognathic surgery, and comprehensive restoration, and resolve adverse forces to the dentition that affect the entire masticatory system. Mounted diagnostic casts and computerized occlusal analysis offer complementary advantages for evaluating occlusal problems. Predictable occlusal adjustment is facilitated by precise, measured documentation of occlusal force by computerized occlusal analysis. CLINICAL PRESENTATION: A conservative, structural correction of a pronounced, chronic occlusal problem by additive and subtractive occlusal adjustment was performed after a previous failed occlusal adjustment. The patient's chief concerns were significant anterior teeth fremitus in maximum intercuspation and "pain in the teeth and a poor bite" after 30+ adjustments over 2.5 years. CLINICAL RELEVANCE: Confirmation of specific criteria for a therapeutic occlusion resolved the anterior teeth fremitus and uneven bite. Traumatic occlusal contact on posterior teeth may elicit protective mandibular repositioning affecting anterior teeth relationships and should be considered during comprehensive diagnosis.

Conservative interdisciplinary treatment of a case with multiple facial and condyle fractures.

The purpose of this case report is to describe an interdisciplinary approach for a 51-year-old male who underwent multiple facial fractures including bilateral condyle fractures. The patient underwent emergency surgery, which included open reduction of the maxilla and mandibular symphysis and closed reduction of the bilateral condyle fractures. Although the patient recovered a comfortable range of mouth opening and alleviation of the temporomandibular joint (TMJ) symptoms after surgery, he suffered from a large anterior-posterior discrepancy due to less stability on the condyle-fossa relationships and from open bite with contacts only on both second molars and right second premolars. In this case, first, to increase the occlusal contact, comprehensive orthodontic treatment was completed. Second, occlusal equilibration was selectively performed to relieve the interferences and establish a stable range of mandibular movement without any changes in the vertical dimension. Third, both the upper central incisors and left lateral incisor were minimally restored with splinted and single zirconia crowns, which had modified lingual contours to provide adequate anterior guidance permitting the anterior-posterior discrepancy of the posterior teeth during protrusion. This conservative interdisciplinary treatment, including open and closed reduction, orthodontic treatment, occlusal adjustment, and minimal prosthetic restorations, resulted in a stable mandibular position and recovery of mastication function.

Retalho reposicionado coronalmente com a finalidade de recobrimento radicular / Coronally advanced flap with the purpose of root coverage

Introdução: a recessão gengival é caracterizada pelo desnudamento parcial da superfície radicular decorrente da migração apical da gengiva marginal e pela degradação do mecanismo de inserção gengival sobre o elemento dentário. Objetivo: descrever um caso clínico de retalho reposicionado coronalmente com a finalidade de recobrimento radicular em paciente que apresentava recessão gengival Classe I de Miller nos elementos dentários 23 e 24. Materiais e Métodos: O presente estudo contou com a participação de um paciente que queixava-se de hipersensibilidade dentinária, quando aplicado o estímulo térmico, e de insatisfação estética devido à exposição radicular visível ao sorrir e durante o ato de conversação. Foi traçado um plano de tratamento para o recobrimento radicular através de cirurgia de retalho reposicionado de forma coronal, seguido de encaminhamento para a realização de tratamento ortodôntico, já que o paciente possuía oclusão traumática na região acometida pela recessão gengival, decorrente da presença de contato prematuro. Resultados e Discussão: com a técnica empregada, foi possível restabelecer a normalidade estética, prevenir o acúmulo de biofilme dental, devido à maior facilidade de higienização da região cervical, permitindo também a redução da hipersensibilidade dentinária, anteriormente relatada pelo paciente. Conclusão: a técnica cirúrgica de retalho coronal, utilizada para a resolução deste caso, mostrou-se uma eficiente forma de tratamento, pois apresentou resultados satisfatórios levando-se em consideração a previsibilidade de recobrimento da superfície radicular para esta técnica, que é de 70 a 99% da área exposta, devolvendo assim, função ao elemento tratado. (AU)

Introduction: the gingival recession is characterized by the partial denudation of the root surface resulting from the apical migration of the marginal gingiva and by the degradation of the gingival insertion mechanism on the dental element. Objective: we present a clinical report of a coronally advanced flap with the purpose of root coverage in a patient who presented gingival recession Miller Class I in the elements 23 and 24. Material and Method: the patient complained of dental hipersensibility when a thermal stimulus was applied and also a aesthetics dissatisfaction due to a visible root exposure to smile and during the act of conservation. A treatment plan was traced for the root coverage by a coronally repositioned flat, followed by a orthodontic treatment due to premature contact. Results: with the technique employed, it was possible to restore aesthetic normality, to prevent the accumulation of dental biofilm due to an ease of cleaning the cervical region, also allowing the reduction of dental hipersensibility, previously reported by the patient. Conclusion: it's possible to claim that the surgical technique of coronal flap used to the resolution of this case is an efficient form of treatment taking into account the root surface coverage for this technique, which is of 70 to 99% of the exposure area, returning to the treated element its function. (AU)

Odontología minimamente invasiva para el tratamiento del desgaste dental / Minimally invasive dentistry for the treatment of tooth wear

El desgaste dental patológico, ocasionado por el bruxismo, es una alteración que se observa frecuentemente en la clínica odontológica. En este caso clínico fue realizado un procedimiento mínimamente invasivo, a fin de restablecer una guía anterior alterada por desgaste dental, asociado a otros tratamientos, tales como, el blanqueamiento dental y el ajuste oclusal. Este abordaje restaurador directo, asociado a las otras técnicas, posibilitó la máxima preservación de estructura dental remanente, alcanzando un excelente resultado estético y funcional, con una correcta adaptación del sistema estomatognático. (AU)

The dental tooth wear due to bruxism is an alteration that is seen frequently in the today ́s clinic. In this clinical case, a mini-mal invasive procedure was conducted aiming to restore the altered anterior guide by bruxism, associating other treatments, such as occlusal adjustment and bleaching. This direct restorative approach associated to the aforementioned treatments, made possible the maximum preservation of the tooth structure, reaching excellent functional and esthetic results, with a correct adaptation of the stomatognathic system. (AU)

Factors associated with clinical decision-making in relation to treatment need for temporomandibular disorders.

OBJECTIVE: The aim of this study was to analyze dentist's clinical decision-making related to treatment need for temporomandibular disorders (TMD) in an adult population. MATERIALS AND METHODS: The study population comprised 779 randomly selected 35, 50, 65 and 75 year old individuals living in the county of Västerbotten, Sweden. The participants filled out a questionnaire and were examined clinically according to a structured protocol. The four examiners (two men, two women) were experienced dentists and were calibrated before the start of the study. After examination they individually assessed the need of treatment owing to TMD. RESULTS: In total, 15% of the study population was considered to have a treatment need owing to TMD. The highest estimate was noted for 35 and 50 years old women and the lowest for 65 and 75 years old men. Overall, 21% of the women and 8% of the men were considered to have a treatment need owing to TMD, with statistically significant differences between men and women for the 35 and 50 years old groups. Inter-individual variations in dentists' decisions were observed. In a multivariate analysis, female gender, signs and symptoms of TMD pain, signs and symptoms of TMD dysfunction and smoking were associated with estimated treatment need. CONCLUSIONS: The prevalence of estimated treatment need owing to TMD was fairly high, but the dentists' clinical decision-making process showed large inter-individual variability. The observation calls for further research on the factors affecting the decision-making process in care providers.

Reabilitação protética com componentes dinâmicos ­ relato de caso / Prosthetic rehabilitation with dynamic components ­ case report

Os componentes dinâmicos surgiram como alternativa para reabilitar implantes inclinados em até 20°, possibilitando o restabelecimento da estética, função e reduzindo os custos do procedimento. Sendo assim, o objetivo deste trabalho é apresentar um relato de caso utilizando esses componentes. Durante o exame clínico foi diagnosticado que os implantes apresentavam profundidade gengival rasa, inclinação e paralelismo desfavoráveis. Dessa forma, foi optado pela utilização de pilares retos com componentes dinâmicos, que irão corrigir a inclinação do orifício de acesso do parafuso da prótese definitiva.

Dynamic components were created as an alternative to rehabilitate tilted implants until 20º angled. This component allows aesthetic and function rehabilitation with lower cost comparing to angled abutments. The aim of this study was to present a case report us-ing these dynamic components. The patient presented tilted implants with gingival shallow depth, with unfavourable parallelism. Thus, straight abutment and dynamic components were concomitantly used to correct the access screw hole inclination of final the prosthesis.

Clinical management of crown-root fracture due to occlusal interference / Manejo clínico de fratura coronorradicular devido a interferência oclusal: relato de caso

This clinical report describes a crown-root fracture of the upper right central incisor associated with compromised anterior dental aesthetics. Occlusal adjustment and aesthetic rehabilitation were achieved by using single-tooth restorations with IPS e.max Press®. The precepts of occlusion were observed to establish an optimal occlusion in terms of static and dynamic mandibular movement. Five-year follow-up demonstrated that the clinical protocol used was successful, providing periodontal tissues with no signs of disease. Satisfactory function has been observed associated with excellent aesthetic outcomes. Reestablishing the occlusal pattern provided longevity to the aesthetic treatment, as well as health to the stomatognathic system.

Este relato de caso descreve uma fratura coronorradicular do incisivo central superior direito associado com insatisfatória aparência estética anterior. Foram feitos ajustes oclusais e reabilitação estética com restaurações unitárias usando o sistema IPS e.max Press®. Os preceitos da oclusão foram observados a fi m de estabelecer uma oclusão ideal nos movimentos mandibulares estáticos e dinâmicos. Cinco anos de acompanhamento demonstraram que o protocolo clínico usado foi bem-sucedido, favorecendo a manutenção da saúde dos tecidos periodontais. Observou-se satisfatória função associada com excelente estética. O restabelecimento do padrão oclusal favoreceu a longevidade do tratamento estético e a saúde do sistema estomatognático.