نتایج جستجو برای: tooth structure

تعداد نتایج: 1632769  

Journal: :Journal of applied oral science : revista FOB 2004
Karina Lopes Devito Ana Isabel Ortega Francisco Haiter-Neto

AIMS All materials added to teeth should present an adequate radiopacity to allow the detection of secondary caries. Usually, in extensive cavities, base materials like calcium hydroxide cement are used for the purpose of protecting the pulp. In an attempt to improve the efficiency of radiographic detection of this material, this study aimed to determine the radiopacity of three calcium hydroxi...

Journal: :Journal of the American College of Cardiology 2011

Journal: :Pediatric dentistry 1988
M Houpt A Fuks E Eidelman Z Shey

This study was performed to examine the success of a conservative cavity preparation using the principle of "sealing for prevention" rather than "extension for prevention." A total of 332 restorations were placed in 243 permanent molars in 114 children aged 6-14 with a mean age of 8 years. After 80 months, 104 restorations were examined for sealant retention, marginal staining, anatomic wear, m...

Journal: :dental research journal 0
niloofar shadman saeideh gorji kandi shahram farzin ebrahimi maryam azizi shoul

background: although studies have shown that porcelain veneers are very effi cient for treating discolored teeth, they did not address in particular the minimum thickness of a multilayer ips e.max press (ivoclarvivadent, schaan, liechtenstein) restoration required to mask discolored tooth. the aim of this study was to determine the minimum thickness of a multilayer porcelain restoration require...

Journal: :Journal of dental research 1952
F A PEYTON D B MAHLER B HERSHENOV

F OR some time there has been considerable interest directed toward the evalution of dental restorations from the physical property standpoint. The dental profession has long recognized that the success of a restorative appliance is dependent not only on the satisfaction of biologic criteria but, in addition, on the capabilities of the restorative materials as well as the tooth structure to res...

ژورنال: مجله دندانپزشکی 2006
عطائی, محمد , فلاح زاده, فرنوش , قوام, مریم ,

Background and Aim: With recent introduction of packable composites, it is claimed that they apply less stress on tooth structure because of reduced polymerization shrinkage, and similarity of coefficient of thermal expansion to tooth structure. However, the high viscosity may in turn cause less adaptation, so it is not clearly known whether these materials strengthen tooth structure or not. Th...

Journal: :Lasers in surgery and medicine 2011
Cynthia K Morford Natalie C H Buu Beate M T Rechmann Frederick C Finzen Arun B Sharma Peter Rechmann

BACKGROUND AND OBJECTIVES The removal of porcelain veneers using Er:YAG lasers has not been previously described in the scientific literature. This study was designed to systematically investigate the efficacy of an Er:YAG laser on veneer debonding, possibly without damage to the underlying tooth, and preservation of the veneer integrity. STUDY DESIGN/MATERIALS AND METHODS The Fourier Transfo...

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