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Copyright of Brazilian Dental Science is the property of Brazilian Dental Science Journal-ICT-UNESP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Brazilian Dental Science is the property of Brazilian Dental Science Journal-ICT-UNESP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Brazilian Dental Science is the property of Brazilian Dental Science Journal-ICT-UNESP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Brazilian Dental Science is the property of Brazilian Dental Science Journal-ICT-UNESP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Fractures of restorations in the mouth are inevitable. When this happens, the clinician should be able to repair them in a simple and reliable way. Purpose: To measure adhesion on a composite for Cad/Cam when it has been sandblasted or acid etched. Methods: 50 Brava Block sheets were divided into 5 groups of n= 10; and aged at 5000 thermal cycles. 100 resin cylinders of 3 mm diameter were cemented to the sheets. The groups: aluminum oxide (AL10) and aluminum oxide with silane (ALS 10) were sandblasted and the hydrofluoric acid (HF10) and hydrofluoric acid with silane (HFS10) groups were etched. The AHS group (aluminum oxide plus hydrofluoric acid with silane) was sandblasted, and acid etched. The cylinders were cemented with resin cement. All groups were sheared in a universal testing machine. Adhesion failures were analyzed under a 40X microscope. All the statistics were worked with an α= 0.05. Results: The groups had similar adhesion strengths. As they aged, their values decreased to 11.15 and 8.15 MPa, on average. The failures were: Adhesives 12 %; Cohesive 68 % and mixed 20 %, higher cohesive and mixed prevalence in sandblasted groups with ruptures of 80-90 %. Conclusions: Both treatments produce similar FA between a Cad/Cam composite and a resinous cement. However, the sandblasted groups suffered a higher percentage of material fractures. [ABSTRACT FROM AUTHOR]

Background: Preheating resins has been shown to improve physical properties such as surface microhardness. Some lowcost composite resins have not been well studied and preheating could improve their properties. Objective: to evaluate if preheating increases the surface microhardness of 6 composite resins and if the microhardness of the preheated low-cost ones equals that of the other resins Method: In this In vitro experimental investigation, 6 resins were used, EnaHri®UE2 and UD2 (Micerium, Genoa Italy) as control, Z350™ and Z250™ (3M ESPE, Minnesota United States) conventionally used composites and LUNA ® and ROK ® (SDI, Victoria Australia) as low-cost resins. Specimens without preheating (sp) and preheating at 39℃ (p) were created for each resin. It was polymerized according to the manufacturers' instructions. Three measurements were made per sample using a microhardness tester applying a 300 g load for 10 seconds. Results: Resinenamel microhardness: LUNA ® sp 69.93 HV (95 % CI 62.02-77.85), Z350™ sp 89.9 HV (95 % CI 80.56-99.23), LUNA ®p 70.05 HV (95 % CI 62.97-77.12), Z350™ p 87.47 HV (CI 95 % 78.71-96.23). The microhardness of resins-dentin: ROK ® sp 85.16 HV (95 % CI 69.91-100.4), Z250™ sp 95.99 HV (95 % CI 74.8-117.2), ROK ® p 92.19 HV (95 % CI 80.83-103.6), Z250™ p 104.7 HV (95 % CI 97.76-111.6). Preheating did not significantly increase microhardness except for control resins. ROK ® sp is equivalent to Z250™ sp (p 0.2825). Conclusion: Preheating does not increase the surface microhardness of the composite resins analyzed. The microhardness of ROK ® sp resin is equivalent to Z350™ sp. [ABSTRACT FROM AUTHOR]

Copyright of Archives of Dental Science / Arquivos em Odontologia is the property of Universidade Federal de Minas Gerais, Faculdade de Odontologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Brazilian Dental Science is the property of Brazilian Dental Science Journal-ICT-UNESP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Universidade Estadual Paulista. Revista de Odontologia is the property of Universidade Estadual Paulista. Revista de Odontologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Clinical Dentistry & Research is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Dental Press Journal of Orthodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cadernos de Saude Publica is the property of Escola Nacional de Saude Publica Sergio Arouca and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A dentina e a polpa são consideradas substratos interdependentes, conhecido como complexo dentino-pulpar. Frente a injúrias como cárie e traumatismo, deve-se realizar a proteção desse complexo, baseando-se na inserção de materiais restauradores considerados agentes protetores. Os materiais considerados ideais devem apresentar propriedades como: biocompatibilidade, ser antimicrobiano, ser insolúvel ao meio bucal, ser isolante térmico e elétrico, ter potencial terapêutico e propriedades mecânicas adequadas. Como essas características não são encontradas em todos os materiais, é importante que o cirurgião-dentista conheça as vantagens e as desvantagens daqueles que estão disponíveis comercialmente. O objetivo deste trabalho foi realizar uma revisão crítica da literatura sobre os materiais indicados para proteção indireta da vitalidade dentino-pulpar (PVDP), em dentes decíduos. Para isso, foram pesquisados livros, teses, dissertações, monografias, artigos impressos e das bases de dados, PubMed, SciELO e MEDLINE. De acordo com a literatura, observou-se que a garantia de êxito na proteção da vitalidade dentino-pulpar é alcançada por meio de um ótimo selamento marginal, impedindo a infiltração bacteriana na dentina e controlando a progressão da cárie. São necessários mais estudos clínicos que avaliem outros desfechos após o tratamento indireto da polpa. Não existe um material que possua todas as características desejadas para a PVDP, e estudos recentes demostram que a chave não se encontra no material protetor, mas sim na vedação marginal das restaurações, propiciando a inativação da progressão da cárie dentária.

Background: The constant need to improve adhesive systems leads manufacturers to develop new materials that offer optimal results. Manufacturers claim that new adhesives produce a strong and durable bond between resin cements and restorative materials including metals. Purpose: To measure the adhesive resistance between a resin cement and a nickel-chromium (Ni-Cr) alloy at 24 hours and after aging. Methods: This was an in vitro experimental study. 40 Ni-Cr metallic cylinders were assigned to 4 groups (n=10). The surfaces were mechanically sanded and abraded with 50 µm Al2O3 particles (mechanical surface treatment). The chemical surface treatment included a metallic primer, silane, and universal adhesive. Subsequently, two cubes of nanohybrid resin were cemented to each metal cylinder with resin cement, under a constant load of 0.98 N for 5 minutes. An immediate shear test (24 hours) and after aging (5,000 thermal cycles) was carried out. Results: The highest values of adhesive resistance were obtained with the GSUNIVERSAL group both when it was measured immediately and when aged. Conclusions: The mechanical and chemical treatment based on 10-MDP plus silane improved the adhesion between a Ni-Cr alloy and a resin cement, even after aging. [ABSTRACT FROM AUTHOR]

Copyright of RSBO: Revista Sul-Brasileira de Odontologia is the property of UNIVILLE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Odontologica Latinoamericana: AOL is the property of Acta Odontologica Latinoamericana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objectives: Etching of dental hard tissues surfaces with 35% phosphoric acid is usually used to provide micromechanical interlocking with dental adhesives. When washed from the surface, the acid can cause a bitter taste unpleasant to the patient. The aim of this study was to analyze the effect of the addition of a flavoring agent to 35% phosphoric acid gel and investigate whether there is change in the fundamental characteristics of this material, including its ability to demineralize dental surfaces. Methods: In addition to a control group (without flavoring agent), groups were tested with the addition of 0.5% or 3% of the flavoring compound (pineapple flavor powder, Bio Green Ingredients) to 35% phosphoric acid. Analyses of viscosity, pH stability and demineralization of enamel surfaces by scanning electron microscopy were carried out, as well microshear bond strength to enamel. Results: Although the groups had minor differences among themselves, none of the changes were significant, except the increased viscosity of the gel containing 3% of the flavoring agent. Conclusions: The addition of flavoring agent to 35% phosphoric acid gel conditioner seems to be a viable alternative to reduce the problems related to contact with the unpleasant taste of the material, since it promoted no negative changes in the characteristics and behavior of the acid.

The purpose of this study was to evaluate a physical property (surface roughness) and a mechanical property (microhardness) of four type IV gypsum. 40 specimens were prepared from a metal matrix that reproduced an edentate upper alveolar ridge. They were divided into 4 groups (n = 10 Clone (G3), Durone(G4), SSWhite (G2), Asfer (G1) and submitted to roughness and microhardness tests. The obtained data were submitted to statistical analysis. By the Kolmogorov-Smirnov test it was verified that there was non-parametric distribution of the samples. The non-parametric Kruskal-Wallis and Mann-Whitney-U tests were applied in hardness and roughness data. In microhardness group 3(Clone) presented the best values (103.0 HV). In surface roughness (Ra), group 3(Clone) and Group 2 (SSWhite) showed the lowest values (1.8 µm) and all evaluated groups presented higher values than those found in metallic matrix (baseline). It was concluded that gypsum models obtained from molds with irreversible hydrocolloid are rougher than molded surface, regardless of the commercial brand. The samples made with the Clone gypsum (G3) have the highest microhardness. [ABSTRACT FROM AUTHOR]

Copyright of Dental Press Journal of Orthodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of RGO: Revista Gaúcha de Odontologia is the property of RGO: Revista Gaucha de Odontologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of RSBO: Revista Sul-Brasileira de Odontologia is the property of UNIVILLE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Universidade Estadual Paulista. Revista de Odontologia is the property of Universidade Estadual Paulista. Revista de Odontologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Resumo Introdução As resinas compostas são alternativas restauradoras, porém sua superfície pode favorecer o acúmulo de biofilme. Objetivo Analisar in vitro a adesão de biofilmes de Streptococcus mutans (UA159) e Candida albicans (ATCC 90028) em superfícies de resinas compostas convencionais e bulk fill. Material e método Foram utilizadas quatro marcas de resinas compostas e bulk fill: Aura Bulk Fill - SDI®; Premisa - Kerr®; Opallis- FGM®, e Filtek bulk fill flow - 3M®. Utilizou-se saliva artificial para formação da película salivar, por 60 min a 37 °C. O inóculo foi padronizado em 1×108 UFC/mL para S. mutans e 1×106 UFC/mL para C. albicans. Os espécimes (n=8/grupo) foram acondicionados em placas de 24 poços, com BHI suplementado com sacarose para as bactérias, e RPMI 1640, para os fungos. A formação do biofilme foi avaliada considerando as unidades formadoras de colônia (UFC/mL).Os dados foram analisados por ANOVA e Tukey (p

Introduction: Scientific studies about the physical and mechanical properties of composite resins are increasingly needed in view of the wide variety of products available in the market today, resulting from the increase in their demand for dental care purposes, with a preference for minimally invasive preparations aimed at restoring the esthetic and functional characteristics of the treated element. Objective: Evaluate and compare the microhardness and porosity of the photopolymerizable composite resins Filtek Z350 XT and Zirconfill Technew. Methods: Ten test bodies were developed per sample (n= 10) and subjected to Vickers microhardness and porosity testing by computerized microtomography. Results: With respect to the presence of porosity, expressed in percentages, the Filtek group had the lowest mean values. When compared statistically, the two groups showed a statistical difference (p= 0.019) with a high effect magnitude. Regarding microhardness, the Filtek group had the highest mean values. Statistical comparison did not find any difference between the groups (p> 0.05). Conclusions: Porosity was significantly different in the groups studied, the Filtek Z350XT group exhibiting the lowest percentage. However, the groups did not show any statistical difference concerning microhardness, despite the fact that the Filtek Z350XT group had a higher mean value.

Introdução: As cerâmicas odontológicas têm sido utilizadas como materiais restauradores desde 1770 por apresentarem propriedades estéticas semelhantes aos dentes naturais. A busca por procedimentos que visem aumentar a adesão entre zircônia, uma cerâmica policristalina, e agente cimentante, é um desafio e tem estimulado o desenvolvimento de diversos estudos. Objetivo: O objetivo deste estudo é discutir os diferentes tipos de tratamentos de superfície preconizados para zircônia estabilizada com ítria (Y-TZP), bem como as vantagens e desvantagens descritas na literatura. Materiais e métodos: O presente estudo trata-se de uma revisão de literatura realizada de artigos científicos publicados entre 2003 e 2019, indexados nas bases de dados MEDLINE, PubMed e Scielo. Foram utilizados os seguintes termos de pesquisa: “tratamento de superfície da zircônia”, “tratamento de superfície Y-TZP”, “agente cimentante para zircônia”, “agente cimentante para Y-TZP”, “adesão à zircônia” e “adesão à Y-TZP”. Resultados: Foram encontrados 413 artigos que contemplavam pelo menos um dos critérios de inclusão registrados. No entanto, foram utilizados os dados de um total de 69 artigos que contemplavam todos os critérios de inclusão. Conclusão: Os protocolos de tratamento de superfície relatados ainda apresentam limitações quanto ao comportamento de longo prazo da resistência de união. No entanto, quando as características do preparo não são favoráveis à retenção, o jateamento com partículas de Al2O3 revestidas com sílica (30μm) deve ser utilizado, sendo menos agressivo à cerâmica que outros protocolos de jateamento descritos. Quanto ao agente cimentante, recomenda-se sempre o uso de cimentos resinosos que apresentem MDP em sua composição, uma vez que proporcionam ligações químicas estáveis e comportamento adesivo duradouro.

Resumo Introdução A camada superficial de resina composta não polimerizada, em função da presença do oxigênio, ocasiona problemas clínicos, como alteração de cor por absorção de pigmentos. Objetivo Determinar o efeito de diferentes técnicas usadas no controle da formação da camada de dispersão sobre as propriedades ópticas de uma resina composta comercial. Material e método Espécimes foram produzidos com a resina composta Estelite Sigma. A fotoativação foi conduzida com uma fonte de luz LED Bluephase G2 (1.200 mW/cm2 por 40 s). Os grupos foram determinados em função de três técnicas distintas: 1) sem tratamento (controle); 2) fotoativação com gel de glicerina; 3) polimento com lixa abrasiva após a fotoativação. A estabilidade de cor (ΔE) e o parâmetro de translucidez foram determinados pelo método de espectroscopia de reflectância (Easyshade Compac, Vita) empregando o parâmetro CIELab. As análises foram realizadas imediatamente após a fotoativação e repetidas após 7 dias de armazenamento em água ou em café. Os resultados foram submetidos à análise de variância e ao teste de Tukey (α = 0,05). Resultado Não houve diferença para ΔE nos grupos envelhecidos em água. Quando armazenados em café, o grupo controle apresentou o maior valor de ΔE, enquanto o grupo polido gerou a menor alteração de cor. A aplicação do gel de glicerina produziu resultados intermediários. O parâmetro de translucidez não foi afetado pelos tratamentos testados. Conclusão O uso do gel de glicerina minimiza a alteração de cor nas regiões de difícil acesso aos instrumentos de acabamento e de polimento.

Resumo Introdução Historicamente, materiais abrasivos, como mármore em pó, corais e cinzas ósseas, eram utilizados para higienização dentária. Com a evolução, tais materiais foram substituídos por dentifrícios aplicados em escovas dentais, com a mesma finalidade. Objetivo Avaliar, através da Tomografia por Coerência Óptica, o desgaste do esmalte dentário, após o uso de diferentes escovas dentais e materiais utilizados na escovação com componentes abrasivos. Material e método Foram confeccionados 50 corpos de prova, distribuídos em 10 grupos (n=5), de acordo com o dentifrício/escova utilizado. Para o grupo A, foi utilizada a escova dental Curaprox® Adulto Ultra Macia, e, para o grupo B, a escova Dental K® - escova adulto macia. Foram utilizados os seguintes materiais para escovação: Curaprox® Black is White; Colgate® Luminous White Instant, Close Up® White Attraction - MenSuperpure; Carvão Ativado; Água Destilada. As imagens foram realizadas antes e depois da ciclagem de escovação e comparadas quanto às alterações de superfície. A perda da estrutura superficial foi avaliada através dos métodos qualitativo e quantitativo. Para análise estatística dos dados obtidos, foram realizadas as medidas estatísticas: média, desvio padrão, mediana e percentis, avaliados inferencialmente através dos testes estatísticos Mann-Whitney, Kruskal-Wallis, com nível de significância de 5%. Resultado Maior índice de perda de estrutura superficial do esmalte nos grupos G2A (16,09) e G2B (11,38) e menor índice de perda estrutural nos grupos G5A (1,07) e G5B (1,20). Conclusão: Através desse estudo, observou-se que os dentifrícios clareadores e o Carvão Ativado são capazes de promover intenso desgaste do esmalte dentário.

Resumo Introdução Devido às suas propriedades biológicas e físico-químicas, o MTA tem sido indicado para diferentes situações clínicas na Endodontia. Objetivo O objetivo foi analisar a composição química dos cimentos MTA Angelus branco, cinza, e Repair HP. Material e método Foram confeccionados cinco corpos de prova de cada tipo de cimento estudado, com diâmetro de 4 mm e altura de 1 mm, utilizando fita condutora de carbono dupla face. Em seguida, as amostras foram analisadas com auxílio de um microscópio eletrônico de varredura acoplado ao aparelho de espectrometria de energia dispersiva. Posteriormente, foram submetidos ao teste estatístico Kolmogorov-Smirnov para verificar a normalidade. Os elementos químicos que apresentaram distribuição normal (média de 5%) foram submetidos ao teste ANOVA e o teste Kruskal-Wallis foi aplicado naqueles com distribuição assimétrica. Resultado Após a análise dos elementos químicos, foram observados para o MTA branco: O, Na, K, Mg, Al, Si, Ca e Bi; para o MTA cinza: O, Mg, Al, Si, Ca, Bi, Fe e S, e para o Repair HP: O, Al, Mg, Si, Ca, Fe, Sr, C, Rb e W. Foram identificados 14 elementos químicos nas amostras analisadas (O, Na, Al, Mg, Si, S, K, Ca, Fe, Sr, Bi, C, Rb e W). Destes, cinco foram encontrados em todos os cimentos estudados: O, Al, Mg, Si e Ca. Conclusão Os elementos Rb, W e C foram encontrados somente na nova formulação de MTA da Angelus, o Repair HP. Nas amostras analisadas, o Ca e o O foram os que se apresentaram em maior quantidade.

Abstract Introduction The most used material for the preparation of the baseplates is the acrylic resin, but it can present distortions. Objective To evaluate preparation technique, region and storage time that presents less maladaptation of the base when made with self-cured acrylic resin. Material and method Models were created in gypsum type III simulating edentulous maxilla, as divided into 3 groups (n = 10): GC (control group) thermopolymerizable acrylic resin; G1 - manual adaptation technique and G2 - drip technique. For the measurements, silicone by condensation of light consistency that was interposed between base and model was used. With a hydraulic press, 50 kg pressure was applied leading the base of the model. The obtained mold was measured in the palate, canine and molar regions with a digital caliper at the following times: immediately after the base polymerization, at 24, 48, 72, 96 hours and one week. The results were submitted to statistical analysis. Result G1 presented maladaptation of 0.43 mm ± 0.10, while G2 obtained 0.39 mm ± 0.11. The lowest maladaptation occurred in the CG. The palate region presented greater maladaptation (0.52 ± 0.07) and the canine region, the lowest (CD = 0.27 mm ± 0.07 and CE = 0.27 ± 0.09); There was no statistically significant difference for storage times. Conclusion G2 presented lower values than G1, with no statistically significant difference. The palate region presented greater maladaptation, followed by molars and canines. The bases continued to maladaptation the model after the immediate polymerization, with no statistically significant difference.

Copyright of Dental Press Endodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Archives of Dental Science / Arquivos em Odontologia is the property of Universidade Federal de Minas Gerais, Faculdade de Odontologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Universidade Estadual Paulista. Revista de Odontologia is the property of Universidade Estadual Paulista. Revista de Odontologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Nacional de Odontología is the property of Universidad Cooperativa de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Clinical Dentistry & Research is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: With improvements in ceramic systems and resin cements, it is possible to create restorations with optical properties similar to natural teeth. An example of this advancement has been the improvement in the use of ceramic laminates, which are a more conservative rehabilitation alternative than full crown restorations and high quality results can be obtained. Objective: This work aims to perform a literature review on ceramic laminates, making a discursive analysis with emphasis on the rehabilitation technique and its clinical correlations. Materials and Methods: This study was characterized by a bibliographic search in the electronic databases: PubMED / Medline, Lilacs, and Science Direct, limiting the search to the period from 2009 to 2018. 150 papers were consulted and 32 of these were selected after careful filtering. As inclusion criteria, articles written in English, Spanish and Portuguese were adopted, those that fit the work focus and the most relevant in terms of the design of the desired information. Results: Aesthetic rehabilitations with ceramic laminates should be planned correctly, since clinical step-by-step interferes with the longevity of the treatment. Therefore, it is extremely important that the dental surgeon be aware of the correct indication of the ceramics, dental preparation, molding and cementation in order to achieve aesthetic, functional and durable rehabilitation. Conclusion: Therefore, ceramic laminates may be a conservative alternative for restoring the shape and color of the anterior teeth. However, it depends on a meticulous protocol that must be followed to the letter. [ABSTRACT FROM AUTHOR]

Introduction: a polished surface increases the compression resistance, corrosion and marginal fractures of amalgam. Objective: the present study evaluates the effectiveness of four techniques for polishing in amalgam restorations, as well as its ability to promote surface smoothness in it, and if among them is there any more effective when compared to another. Methods: in the experimental phase, was carried out polishes in 60 specimens of amalgam, divided into four groups by the technique of polishing: rubber cup and pumice stone; abrasive silicone tips; abrasive silicone tips and pumice stone; rubber cup, pumice stone and abrasive silicone. Surface roughness was measured in micrometres, computing the data in Microsoft Excel and subjecting it to the Kruskal-Wallis test. Results and conclusion: the evaluation of the results showed that there was a difference statistically significant between one of the techniques regarding the other ones: the treatment done by the group of abrasive silicone tips presented the best smoothness of the surface. [ABSTRACT FROM AUTHOR]

Introduction: adhesive systems are dental materials that allow adhesion to dental substrates with satisfactory mechanical properties. With the evolution of adhesive systems, they sought to provide more simplified materials with low sensitivity to the technique. Thus, universal adhesive systems were introduced in clinical practice. Objective: to review the literature about universal adhesive systems, emphasizing its clinical protocols and evaluation of union strength in enamel and dentin in an attempt to better understand the use of this material. Methods: this study was characterized by a bibliographic search in electronic data bases: PubMED / Medline, Lilacs, Scielo and academic Google, limiting the search to the period from 2010 to 2018. Results: among the functional monomers contained in the universal adhesive systems, the literature indicates that 10-MDP has a stability in terms of longevity and durability greater than 4-META and Phenyl-P. Conclusion: universal adhesives provide versatility of use, good bonding strength to the dental substrates, a reduction in the chances of making mistakes during the application of the material, facilitating their use, since they can be used associated or not to phosphoric acid. However, it's necessary to pay attention to contraindications, such as incompatibility with other materials, should be emphasized so that clinical failure of the procedure does not occur. [ABSTRACT FROM AUTHOR]

Introduction: Universal adhesive systems (UAS) were introduced in clinical practice in mid-2011, due to the need for more simplified materials and with low sensitivity to the technique. Such adhesives can be used in three ways: self-etching, total acid conditioning and selective acid conditioning in enamel. Objective: in this context, the objective of this work was to review the literature about universal adhesive systems, emphasizing its clinical protocols and evaluation of union strength in enamel and dentin. Materials and Methods: this study was characterized by a bibliographic search in electronic data bases: PubMED / Medline, Lilacs, Scielo and academic Google, limiting the search to the period from 2010 to 2018. Results: universal adhesive systems used in the enamel self-etching mode do not obtain satisfactory bond strength, therefore, when dental enamel is involved, selective conditioning must be done to obtain higher bond strength values. Conclusion: universal adhesives provide a good bond strength to the dental substrates, as well as reducing the chances of making mistakes during the application of the material, facilitating the use, since it can be used associated or not with phosphoric acid. [ABSTRACT FROM AUTHOR]

Objetivo: este estudo tem como objetivo avaliar, através de uma revisão da literatura, a adesividade da zircônia e do dissilicato de lítio após diferentes tratamentos de superfície e estabelecer um protocolo a ser seguido na clínica. Material e Métodos: a metodologia foi desenvolvida a partir da busca eletrônica na base de dados Biblioteca Nacional de Medicina (PUBMED), utilizando os termos "resistência de união ao tratamento superficial zircônia" e "tratamento superficial da dissilicato de lítio", incluindo apenas estudos clínicos em humanos. in vitro ou in vivo, e revisões de literatura. Todos os artigos foram publicados nos últimos 16 anos e escritos em língua inglesa. Resultados: após a seleção dos artigos científicos seguindo os critérios de inclusão e exclusão, restaram 26 estudos para revisão da literatura. Conclusão: após a revisão, concluiu-se que os protocolos de cimentação para dissilicato de lítio e zircônia são diferentes devido às suas diferentes microestruturas. O di-silicato de lítio deve ser condicionado com ácido fluorídrico a 4,5%, seguido de sujidade com ácido fosfórico, silano (secagem por ar quente) e aplicação de adesivo universal. Por outro lado, as restaurações de zircônia devem ser jateadas com óxido de alumínio revestido de sílica, seguido de silanização ou jateamento com óxido de alumínio, associado à aplicação de primer de zircônia.

Abstract Introduction Filling ability of retrograde cavity and porosity are important properties for root-end filling materials and may be evaluated by using microcomputed tomography (micro-CT). Objective To evaluate filling ability and porosity of root-end filling materials using microcomputed tomography (micro-CT). Material and method Cavities with 1 mm internal diameter and 3 mm depth were prepared in bovine dentin sections by using ultrasonic tips (CVD No. 6.1107-6), and filled by Mineral Trioxide Aggregate (MTA); Sealer 26 (S26) and zinc oxide and eugenol cement (ZOE). Before and after filling, cavities were scanned by using micro-CT (SkyScan 1176). Filling and porosity were analyzed by using CTAn software. Filling ability was calculated based on volumetric percentage of the filled cavity. The number and percentage of closed pores were measured throughout entire extension of the filled cavity (total) and in each third (cervical, middle and apical), by using bi and tridimensional analyses. The filling data were submitted to ANOVA and Tukey statistical tests, and porosity data to Kruskall-Wallis and Dunn tests, at a 5% significance level. Result S26 and ZOE presented higher filling ability than MTA (p

Objetivo: Avaliar, in vitro, a microinfiltração de um cimento resinoso autoadesivo (Relyx U200, 3M ESPE) em ambos os substratos dentários – esmalte e dentina. Metodologia: A amostra foi constituída por 8 dentes hígidos, preparados para receber uma coroa total, com margens em esmalte na face vestibular e em dentina na face palatina. Sobre estes foram cimentadas coroas confeccionadas em resina composta (Z350 Filtek, 3M ESPE) utilizando o cimento resinoso autoadesivo (Relyx U200, 3M ESPE) conforme as orientações do fabricante. Foi realizada a ciclagem térmica de 700 ciclos e após, os espécimes ficaram submersos em corante azul de metileno 1% por 5 horas, em seguida foram seccionados no sentido vestíbulo-lingual e avaliados por um microscópio estereoscópio com aumento de 16 vezes com uma câmera digital acoplada para obtenção dos resultados. As imagens foram avaliadas através de escores para a microinfiltração. Resultados: Os dados obtidos foram submetidos ao teste estatístico de Anova Anyone, que demonstrou não haver diferença significativamente estatística na microinfiltração entre dentina e esmalte. Conclusão: O cimento resinoso autoadesivo Relyx U200 não apresentou diferença na microinfiltração entre esmalte e dentina. Sendo necessário a realização de outros estudos para avaliar o desempenho deste material.