نتایج جستجو برای: retro filling material
تعداد نتایج: 399534 فیلتر نتایج به سال:
introduction: to examine the long-term effects of normal saline and a synthetic tissue fluid (phosphate buffered saline, pbs) on mineral trioxide aggregate (mta). materials and methods: root-ends of twelve extracted human teeth were resected; root-end cavities were prepared and filled with mta. samples were randomly divided into two groups of six each. teeth in group i were placed in normal sal...
One of the major goals of preradicular surgery is to create a good apical seal. This can be done by sectioning approximately one third of the apex, preparation of a class I cavity, and filling with a biocompatible material. The purpose of this in vitro study was to compare crack propagation in retro filling with two commercially available amalgams. Thirty-four extracted single rooted teeth were...
the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...
the aim of this study was to evaluate the marginal adaptation of biodentine in comparison with mineral trioxide aggregate (mta) and intermediate restorative material (irm), as a root end filling material, using scanning electron microscopy (sem).thirty permanent maxillary central incisors were chemo-mechanically prepared and obturated. three millimetres of the root end were resected and 3mm ret...
OBJECTIVE The aim of this study was to evaluate the marginal adaptation of Biodentine in comparison with Mineral Trioxide Aggregate (MTA) and Intermediate Restorative Material (IRM), as a root end filling material, using Scanning Electron Microscopy (SEM). MATERIALS AND METHODS Thirty permanent maxillary central incisors were chemo-mechanically prepared and obturated. Three millimetres of the...
Aim: The purpose of this study is compare sealing ability of mineral trioxide aggregate (MTA) and Biodentine as root end filling material, and also to compare the effect of different retro preparation techniques i.e. conventional bur v/s ultrasonic tips on sealing ability of both the root end filling materials. Materials and Methods: Totally, 40 extracted human single rooted teeth were decorona...
BACKGROUND Long-term success of endodontic surgeries is often influenced by the type of root-end filling material (RFM). The aim of present study was to compare the marginal adaptation of two different RFM, cold ceramic (CC) and mineral trioxide aggregate (MTA), using scanning electron microscope (SEM). MATERIALS AND METHODS About 20 extracted human single-rooted teeth were collected and stor...
INTRODUCTION Endodontic surgery is a valuable option for maintaining patient's natural dentition when previous orthograde endodontic treatments fail to succeed. Proper root-end preparation and placement of a retro-filling material are recommended for successful endodontic surgery. The objective of this experimental study was to compare sealing ability of Resilon/Epiphany system, as a potential ...
aim: the aim of this study was to compare cusp deflection, infraction and fracture in teeth filled with three temporary filling materials. materials & method: forty five extracted human premolar teeth were chosen. after root canal therapy and mesio-occluso-distal cavity preparation, samples were randomly divided into three groups , each contained 15 teeth and filled with three temporary filling...
introduction: biocompatibility is a desirable feature for root-end filling materials. in this study we aimed to compare a new material called cold ceramic (cc) with intermediate restorative material (irm) and mineral trioxide aggregate (mta) using methyl-tetrazolium bromide (mtt) assay. materials and methods: the materials were tested in fresh and set states: (n=108). the cytotoxicity was compa...
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