نتایج جستجو برای: dental microleakage

تعداد نتایج: 162735  

ژورنال: مجله دندانپزشکی 2002
راهبی, شعله , پهلوان, ایوب ,

Dentin bonding agents create stronger bonding between dental composites and dentin. But, none of them can prevent the microleakage. The important factors of progressing microleakage are the stress of polymerization shrinkage of resin composite and removal of smear layer in total-etch technique. The aim of this study was the evaluation of the effect of experimental method (modifying smear layer ...

2014
H. Heshmat M. Hoorizad Ganjkar S. Zeinali F. Aghajani

Received: 26 July 2011 Accepted: 17 March 2012 Abstract Background and Aim: Current self-adhesive resin cements have become popular for esthetic restorations. The purpose of this study was to compare the microleakage of 2 self-adhesive resin cements and 2 etch and rinse versions of the same brands. Materials and Methods: Forty human third molars were randomly assigned to 4 experimental groups: ...

2014
Yanyan Han Sisu Mo Long Jiang Yaqin Zhu

OBJECTIVE To compare the effects of three antioxidants (sodium ascorbate, sodium ascorbate combined with a surfactant, and catalase) on the microleakage of composite resin restorations after external tooth bleaching with 10% carbamide peroxide. MATERIALS AND METHODS Buccal cavities were prepared on the surface of 60 intact premolars, which were randomly divided into six groups. All cavities w...

Journal: :The journal of contemporary dental practice 2015
Sahar Akbarian Farahnaz Sharafeddin Golsa Akbarian

AIM To evaluate the bonding temperature effect on dentin-restoration microleakage. The null hypothesis of the study is that the score of microleakage is identical among different adhesive bondings at different temperatures. MATERIALS AND METHODS Ninety caries free maxillary premolars were selected. Class V cavities were prepared on the cemento enamel junction (CEJ) of the buccal sides with en...

2017
Mohita Gupta Dinesh Rao Sapna Hegde

BACKGROUND Microleakage is one of the most frequently encountered problems in posterior tooth-colored restorations. Efforts to decrease this problem with resin restorations include techniques for reducing the ratio of bonded to unbonded restoration surfaces and following strategic incremental placement techniques to reduce residual stress at tooth-restoration interface which reduces the C-facto...

2016
ALEXANDRINA MUNTEAN ANCA MESAROS DANA FESTILA MARIOARA MOLDOVAN MICHAELA MESAROS

ALEXANDRINA MUNTEAN1*, ANCA MESAROS2, DANA FESTILA3, MARIOARA MOLDOVAN4, MICHAELA MESAROS1 1 University of Medicine and Pharmacy, I. Hatieganu Cluj Napoca, Faculty of Dental Medicine, Paediatric Dentistry Department, 8 Victor Babes Str., 400012, Cluj Napoca, Romania 2 University of Medicine and Pharmacy, I.Hatieganu Cluj Napoca, Faculty of Dental Medicine, Dental Propaedeutic and Aesthetics Dep...

2013
Maryam Khoroushi Farinaz Shirban Mohammadreza Shirban

OBJECTIVE In recent years, newly developed solvent-free dental adhesives have been introduced. The aim of this study was to evaluate the marginal integrity of a new one-step solvent-free self-etch adhesive and to compare it with a commonly used two-step self-etch adhesive as the gold standard. MATERIALS AND METHODS Class V cavities (2×4×1.5 mm) were prepared on the buccal aspects of 28 human ...

2008
Paulo Henrique Orlato Rossetti Accacio Lins do Valle Ricardo Marins de Carvalho Mario Fernando De Goes Luiz Fernando Pegoraro

UNLABELLED Microleakage can be related to margin misfit. Also, traditional microleakage techniques are time-consuming. This study evaluated the existence of correlation between in vitro margin fit and a new microleakage technique for complete crowns cemented with 3 different luting agents. Thirty human premolars were prepared for full-coverage crowns with a convergence angle of 6 degrees, chamf...

Journal: :Journal 2005
Roland Robichaud Mary E McNally

This paper provides a review of the literature concerning the etiology and manifestations of barodontalgia, as well as important clinical considerations for its management. Barodontalgia is characterized by exposure to a pressure gradient, such as that experienced by underwater divers, aviation personnel and air travellers. This form of dental pain is generally marked by a predisposing dental p...

2016
Sedigheh Sadat Hashemikamangar Seyed Jalal Pourhashemi Zohre Nekooimehr Mehrzad Gholampur Dehaki Mohamad Javad Kharazifard

OBJECTIVES To assess the effect of lactic acid (LA) on microleakage of silorane-based composite restorations and methacrylate-based composites with self-etch and etch-and-rinse bonding systems. MATERIALS AND METHODS Class V cavities were prepared in 120 extracted human teeth, divided into four groups and restored as follows: 1. Silorane-based composite+P90 adhesive system (P90); 2. Filtek Z25...

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