Microleakage
Mostrando 25-36 de 104 artigos, teses e dissertações.
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25. Influência da espessura da resina de baixa viscosidade e da técnica restauradora na infiltração marginal em restaurações realizadas com compósito dental / Influence of the thickness of two flowable composite resins and the restorative technique on microleakage of simulated class II composite resin restorations
O objetivo deste estudo in vitro foi avaliar quantitativamente a infiltração marginal ao redor de restaurações dentais, realizadas com compósito resinoso microhíbrido, variando a espessura, a resina de baixa viscosidade e a técnica restauradora. As superfícies proximais de cento e trinta incisivos bovinos foram preparadas e divididas de acordo com a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/06/2011
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26. Influência do alargamento foraminal na anatomia apical e na qualidade de selamento após obturação / Influence of apical foramen widening on apical foramen morphology and apical sealing
Introduction: The aim of this study was to evaluate the influence of the working length and apical foramen widening on the anatomy of the apical foramen and on the sealing ability after root canal filling. Methods: Fifty-five palatal roots of maxillary molars were selected. The samples were randomly divided into three groups (n=15) according to the different
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/04/2011
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27. Evaluation of three instrumentation techniques at the precision of apical stop and apical sealing of obturation
OBJECTIVE: The aim of this study was to investigate the ability of two NiTi rotary apical preparation techniques used with an electronic apex locator-integrated endodontic motor and a manual technique to create an apical stop at a predetermined level (0.5 mm short of the apical foramen) in teeth with disrupted apical constriction, and to evaluate microleakag
J. Appl. Oral Sci.. Publicado em: 03/06/2011
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28. Influence of marginal fit and cement types on microleakage of all-ceramic crown systems
The purpose of this study was to evaluate the effects of both marginal fit and cementing with different luting agents on the microleakage of all-ceramic crown systems. Thirty-six extracted upper central incisors were prepared for full-coverage crowns and were divided into three groups. Group 1: CAD/CAM-fabricated ZrO2, Group 2: Heat-pressed lithium-disilicat
Brazilian Oral Research. Publicado em: 2011-06
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29. Characterization of aqueous silver nitrate solutions for leakage tests
OBJECTIVE: To determine the pH over a period of 168 h and the ionic silver content in various concentrations and post-preparation times of aqueous silver nitrate solutions. Also, the possible effects of these factors on microleakage test in adhesive/resin restorations in primary and permanent teeth were evaluated. MATERIAL AND METHODS: A digital pHmeter was
Journal of Applied Oral Science. Publicado em: 2011-06
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30. Nd:YAG laser irradiation effect on apical intracanal dentin - a microleakage and SEM evaluation
The purpose of this in vitro study was to evaluate the effect of neodymium:yttrium-aluminum-garnet (Nd:YAG) laser irradiation on intracanal dentin surface by SEM analysis and its interference in the apical seal of filled canals. After endodontic treatment procedures, 34 maxillary human incisors were randomly assigned to 2 groups. In the negative control grou
Brazilian Dental Journal. Publicado em: 2011
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31. Apical microleakage and SEM analysis of dentin surface after 980 nm diode laser irradiation
Este estudo avaliou o efeito do laser de diodo 980 nm na microinfiltração apical e na morfologia intrarradicular da dentina. Raízes de 110 incisivos inferiores foram utilizadas no estudo: 92 para o teste de microinfiltração e 18 para microscopia eletrônica de varredura (MEV). As raízes foram divididas em 3 grupos de acordo com a solução irrigante (�
Brazilian Dental Journal. Publicado em: 2011
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32. AVALIAÇÃO IN VITRO DO SELAMENTO MARGINAL DE RESTAURAÇÕES CLASSE II COM RESINA COMPOSTA UTILIZANDO-SE DIFERENTES SISTEMAS ADESIVOS: COMPARAÇÃO DO EFEITO DE DUAS SOLUÇÕES
Neste estudo foi avaliado in vitro o selamento marginal em restaurações classe II com resina composta utilizando-se três sistemas adesivos por meio de comparação da penetração de dois evidenciadores. Sessenta molares humanos hígidos foram utilizados, nos quais foram realizadas cavidades tipo slot vertical com término gengival abaixo da junção esma
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2010
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33. Influência da fonte fotoativadora e da temperatura da resina composta na infiltração marginal em restaurações dentais submetidas a termociclagem / Influence of light-curing unit and preheating composite resin on microleakage of Class II restorations submitted to thermocycling
O objetivo deste estudo in vitro, foi avaliar a infiltração marginal na interface de restaurações Classe II, restauradas com resina composta, variando o aparelho de fotoativação e a temperatura do compósito, após termociclagem. Noventa cavidades foram preparadas na face proximal de dentes bovinos, e foram divididos aleatoriamente de acordo com o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/07/2010
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34. Microleakage in conservative cavities varying the preparation method and surface treatment
OBJECTIVE: To assess microleakage in conservative class V cavities prepared with aluminum-oxide air abrasion or turbine and restored with self-etching or etch-and-rinse adhesive systems. Materials and Methods: Forty premolars were randomly assigned to 4 groups (I and II: air abrasion; III and IV: turbine) and class V cavities were prepared on the buccal surf
Journal of Applied Oral Science. Publicado em: 2010-08
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35. Influence of different restorative techniques on marginal seal of class II composite restorations
OBJECTIVE: To evaluate the gingival marginal seal in class II composite restorations using different restorative techniques. MATERIAL AND METHODS: Class II box cavities were prepared in both proximal faces of 32 sound human third molars with gingival margins located in either enamel or dentin/cementum. Restorations were performed as follows: G1 (control): co
Journal of Applied Oral Science. Publicado em: 2010-02
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36. Importance of three techniques of cavity preparation and three adhesive systems on microleakage of composite resin restorations / Importância de três técnicas de preparo cavitário e de três sistemas adesivos na microinfiltração marginal em restaurações Classe V de resina composta
This in vitro study compared the microleakage of class V resin composite restorations placed in cavities prepared with high-speed dental bur (AR), ultrasonic preparation devices (US) and high-speed dental bur plus ultrasonic preparation devices(AR+US), and restored using three different adhesive systems (One all etch Single Bond (SB) , and two Self-etch Clea
Publicado em: 2010