Glass Ionomer Cements
Mostrando 25-36 de 96 artigos, teses e dissertações.
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25. Eroded dentin does not jeopardize the bond strength of adhesive restorative materials
This in vitro study evaluated the bond strength of adhesive restorative materials to sound and eroded dentin. Thirty-six bovine incisors were embedded in acrylic resin and ground to obtain flat buccal dentin surfaces. Specimens were randomly allocated in 2 groups: sound dentin (immersion in artificial saliva) and eroded dentin (pH cycling model - 3× / cola
Brazilian Oral Research. Publicado em: 19/06/2012
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26. Effect of antibacterial agents on the surface hardness of a conventional glass-ionomer cement
In atraumatic restorative treatment (ART), caries removal with hand excavation instruments is not as efficient as that with rotary burs in eliminating bacteria under the glass ionomer cements (GICs). Thus, different antibacterial agents have been used in recent studies to enhance the antibacterial properties of the GICs, without jeopardizing their basic phys
Journal of Applied Oral Science. Publicado em: 2012-02
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27. Estudo da radiopacidade de materiais odontológicos indicados como base e forramento de restaurações. Análise através da radiografia digital / Study of the radiopacity of dental materials used as base and liner of restorations. Analysis by digital radiographic
Radiopacity is an important pre-requisite for base and liner materials, once it allows the professional to identify the presence of the material and makes its differentiation from the adjacent tooth structure possible. The aim of this study was to evaluate the radiopacity of liner and base materials and compare to the radiopacity of enamel, dentin and alumin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/06/2011
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28. Avaliação de cimentos de ionômero de vidro modificados por resina frente à incorporação de nanopartículas de vitrocerâmica bioativa / Resin modified glass ionomer cements evaluation with additional bioactive glass-ceramics nanoparticles
Os materiais bioativos são materiais sintéticos que possuem superfícies ativas em que os minerais presentes em tecidos duros podem se ligar quimicamente. Há alguns estudos em Odontologia, onde partículas desses materiais foram incorporadas aos Cimentos de Ionômero de Vidro (CIVs) e Cimentos de Ionômero de Vidro modificados por resina (CIVMRs) com o ob
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2011
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29. Bond strength of three luting agents to zirconia ceramic - influence of surface treatment and thermocycling
OBJECTIVE: This in vitro study aimed to evaluate the influence of different surface treatments, 3 luting agents and thermocycling on microtensile bond strength (µTBS) to zirconia ceramic. Material and METHODS: A total of 18 blocks (5x5x4 mm) were fabricated from zirconia ceramic (ICE Zirkonia) and duplicated into composite blocks (Alphadent). Ceramic blocks
J. Appl. Oral Sci.. Publicado em: 01/07/2011
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30. Surface roughness of orthodontic band cements with different compositions
OBJECTIVES: The present study evaluated comparatively the surface roughness of four orthodontic band cements after storage in various solutions. MATERIAL AND METHODS: Eight standardized cylinders were made from 4 materials: zinc phosphate cement (ZP), compomer (C), resin-modified glass ionomer cement (RMGIC) and resin cement (RC). Specimens were stored for 2
Journal of Applied Oral Science. Publicado em: 2011-06
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31. Effect of green propolis addition to physical mechanical properties of glass ionomer cements
OBJECTIVE: This study investigated the mechanical properties of glass ionomer cements (GICs) combined with propolis as a natural antimicrobial substance. MATERIAL AND METHODS: Typifed green propolis, as an ethanolic extract (EEP) or in the lyophilized form (powder), was incorporated to specimens of Ketac Fil Plus, ChemFlex and Ketac Molar Easymix GICs. For e
Journal of Applied Oral Science. Publicado em: 2011-04
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32. Resistência à degradação biológica, química e mecânica de materiais resinosos nanoparticulados / Resistance to degradation biological, chemical and mechanical resin materials nanofillers
O avanço da Odontologia Estética tem sido impulsionado pela introdução de novos materiais restauradores, tais como os nanoparticulados, os quais têm demonstrado bom desempenho mecânico e excelentes propriedades ópticas. Entretanto, deve-se considerar que os materiais restauradores estão constantemente sujeitos aos desafios térmicos, mecânicos e qu�
Publicado em: 2011
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33. Efeito do envelhecimento de restauraÃÃes de cimento de ionÃmero de vidro na desmineralizaÃÃo do esmalte e dentina: estudo in situ / In situ effects of aged glass ionomer cement restorations on biofilm and enamel-dentine demineralization.
O benefÃcio de restauraÃÃes de cimento de ionÃmero de vidro modificado por resina (RMGIC) na inibiÃÃo de cÃries pode ser questionado na presenÃa de dentifrÃcio fluoretado e de restauraÃÃes envelhecidas. Objetivo: Avaliar o efeito do processo de envelhecimento em cÃries ao redor de restauraÃÃes na junÃÃo amelo-cementÃria, na presenÃa de flÃ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/03/2010
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34. Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements
Clinicians tend to make reductions in glass ionomer power/liquid (P/L) ratios since some materials are difficult to mix and flow into small cavities, grooves or pits. In general, changing the P/L ratio decreases the physical and mechanical properties of conventional glass ionomer cements (GICs) and resin modified glass ionomer cements (RMGICs), but alteratio
Journal of Applied Oral Science. Publicado em: 2010-12
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35. Where and how are Brazilian dental students using Glass lonomer Cement?
Glass Ionomer Cements (GICs) have a wide range of uses in Dentistry, and the manipulation technique used can influence the results obtained. This study aimed at assessing the knowledge held by Dental School students from a city in Southern Brazil regarding the use of GIC, and the clinical technique chosen for its use and its applications. A structured questi
Brazilian Oral Research. Publicado em: 2010-12
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36. Cariostatic effect of fluoride-containing restorative materials associated with fluoride gels on root dentin
Secondary caries is still the main cause of restoration replacement, especially on the root surface OBJECTIVE: This in vitro study evaluated the cariostatic effects of fluoride-containing restorative materials associated with fluoride gels, on root dentin. MATERIALS AND METHODS: A randomized complete block design was used to test the effects of the restorati
Journal of Applied Oral Science. Publicado em: 2010-10