نتایج جستجو برای: microleakage

تعداد نتایج: 1682  

Journal: :Brazilian oral research 2014
Ozgür Ilke Ulusoy Yelda Nayir Kezban Celik Sis Darendeliler Yaman

This study aimed to compare the effects of ethylenediaminetetraacetic acid (EDTA) and maleic acid (MA) on the sealing ability of various root canal sealers. Eighty root canals were instrumented and irrigated with either EDTA or MA. They were divided into eight experimental groups and obturated as follows: Group 1: MA + Hybrid Root SEAL/gutta-percha. Group 2: EDTA + Hybrid Root SEAL/gutta-percha...

2009
Mohammad Ghasem Aminozarbian Mahboobe Feizianfard

Introduction: Coronal microleakage may significantly reduce the prognosis of endodontic treatment. Temporary restorative materials have a crucial role in preventing the infection of root canals between and after endodontic treatment. This in vitro study was designed to evaluate the coronal microleakage of three temporary restorative materials used in endodontics: Coltosol, Cavisol and Cina. Mat...

2010
Subba Reddy

Aim Conservative procedures using dentin bonding agents are one of the important aspects of paediatric dental practice. The objective of this in vitro study was to comparatively evaluate the microleakage of two self etching adhesives in primary and permanent teeth. Materials and methods Sixtyfour human anterior teeth (thirty-two primary and thirty-two permanent) were divided into four groups: p...

Journal: :journal of dentistry, tehran university of medical sciences 0
zahra jaberi ansari department of operative dentistry dental school, shahid beheshti university of medical sciences. mojdeh kalantar motamedi department of operative dentistry dental school, shahid beheshti university of medical sciences.

microleakage is a main cause of restorative treatment failure. in this study, we compared occlusal and cervical microleakage of two self-adhesive cements after 24 hours and two months.in this in-vitro experimental study, class ii inlay cavities were prepared on 60 sound human third molars. composite inlays were fabricated with z100 composite resin. the teeth were randomly assigned to six groups...

Journal: :The journal of contemporary dental practice 2007
Marjaneh Ghavamnasiri Horieh Moosavi Najmeh Tahvildarnejad

AIM The aim of this study was to evaluate the microleakage at gingival margins below the cementoenamel junction (CEJ) of Class II composite restorations using various placement techniques. METHODS AND MATERIALS Sound human maxillary premolars were selected. Eighty slot-style cavities on the mesial or distal surfaces were prepared with the cervical margins located apical to the CEJ. The specim...

2017
Shahram Mosharrafian Alireza Heidari Pegah Rahbar

Objectives This study aimed to assess and compare the microleakage of two bulk fill and one conventional composite in class II restorations of primary posterior teeth. Materials and Methods This in vitro, experimental study was conducted on 60 primary mandibular second molars, which were randomly divided into three groups. Standard class II cavities were prepared in teeth and restored with 3M...

Journal: :The journal of contemporary dental practice 2005
Güliz Görgül Bagdagül H Kivanç Murat Maden Ozgur Ilke Atasoy Ulusoy A Cemal Tinaz

One of the most important goals of the restoration of endodontically treated teeth with a composite resin post system is to achieve good adaptation of the composite material to dentin walls to prevent microleakage apically and coronally. In post core systems, to avoid microleakage between the dentin wall and resin material, laser irradiation may seem to be an alternative therapy for increasing ...

2014
Sedighe Sadat Hashemi Kamangar Maryam Ghavam Nazanin Mahinfar Seyed Jalal Pourhashemi

OBJECTIVES This study aimed to assess the effect of 38% carbamide peroxide on the microleakage of class V cavities restored with either a silorane-based composite or two methacrylate-based composites. MATERIALS AND METHODS A total of 96 class V cavities were prepared on the buccal surface of extracted human teeth with both enamel and dentin margins and were randomly assigned into three groups...

2016
Fernanda Carvalho Rezende Lins Raquel Conceição Ferreira Rodrigo Richard Silveira Carolina Nemésio Barros Pereira Allyson Nogueira Moreira Claudia Silami Magalhães

Objective. This study evaluated the effect of immediate or delayed finishing/polishing using different systems on the surface roughness, hardness, and microleakage of a silorane-based composite. Material and Methods. Specimens were made with silorane-based composite (Filtek P90, 3M ESPE) and assigned to the treatments: control (light-cured); aluminum oxide discs (Sof-Lex, 3M ESPE); diamond-impr...

Journal: :Pediatric dentistry 2006
Ho Beom Kwon Ki Tae Park

PURPOSE The aim of this study was to determine if flowable composites can be used as pit and fissure sealants without bonding agents. METHODS Three flowable composites (Filtek Flow, Tetric Flow, Charmfil Flow) and a filled sealant (Ultraseal XT Plus) were used. The patterns of resin tag formation in the 4 sealant materials were compared using scanning electron microscopy. For the microleakage...

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