نتایج جستجو برای: protaper next

تعداد نتایج: 196469  

2011
Shahram Azimi Parisa Delvari Hamid Cyrus Hajarian Mohammad Ali Saghiri Kasra Karamifar Mehrdad Lotfi

INTRODUCTION This study investigated the fatigue and fracture modes of RaCe and ProTaper rotary instruments. MATERIALS AND METHODS Fatigue resistance was evaluated by rotating the files 30° or 60° and with 2 or 5mm radius of curvature. RaCe taper 06 size 25 and ProTaper F1 files (n=40) were used. The number of rotations to failure was analyzed by two-way ANOVA and independent sample t-test. F...

2007
Cumhur Aydin

t u C T c bstract he purpose of this study was to evaluate the topogaphy of new and used ProTaper rotary nickel-titanium NiTi) instruments by using atomic force microscope. our new and four used size S1, S2, F1, and F2 instruents were selected for this study. New and used nstruments were analyzed on 11 points along a 3-mm ection at the tip of the instrument. Quantitative meaurements according t...

2011
Jaya Siotia Shashi Rashmi Acharya Sunil Kumar Gupta

Objective. To compare the efficacy of ProTaper retreatment files in removing three different obturating materials. Study Design. Forty-five human, single-rooted premolars were divided into three experimental groups. Group 1 was obturated with gutta-percha and AH Plus sealer, Group 2 was obturated with gutta-percha and zinc oxide eugenol sealer, and Group 3 was obturated with GuttaFlow. Retreatm...

2012
Sergio Herrero Moraes Marcelo Gonçalves Mário Tanomaru Filho Idomeo Bonetti Filho

Introduction: Nickel-titanium rotatory systems should remove dentin during the root canal preparation to promote the enlargement and tapered shape with continuously narrowing towards the apex. Objective: The aim of this study was to analyze the cutting ability of three NiTi rotatory systems (n = 12): ProTaper (group 1), Mtwo (group 2), and K3 (group 3). Material and methods: Thirty six maxillar...

Journal: :Brazilian dental journal 2011
Luiz Fernando Fariniuk Vânia Portela Dietzel Westphalen Ulisses Xavier da Silva-Neto Everdan Carneiro Flares Baratto Filho Sandra Rivera Fidel Rivail Antônio Sérgio Fidel

The purpose of this study was to evaluate the efficiency of ProFile, GT, ProTaper, Race and K3 rotary instruments compared with hand K-files for removal of gutta-percha during retreatment. Sixty mandibular premolars were instrumented with GT rotary files and filled by thermomechanical compaction of gutta-percha and AH Plus sealer. The teeth are randomly divided into 6 groups of 10 specimens eac...

2012
Marilena Bătăiosu Oana Diaconu Iren Moraru C. Dăguci Mihaela Ţuculină Luminiţa Dăguci Lelia Gheorghiţă

UNLABELLED The failures of root canal preparation are due to some anatomical deviation (canal in "C" or "S") and some technique errors. The technique errors are usually present in canal root cleansing and shaping stage and are the result of endodontic treatment objectives deviation. OBJECTIVES Our study was made on technique errors while preparing the canal roots with hand ProTaper. METHODO...

2015
Cristina Cabanillas Manuel Monterde Antonio Pallarés Susana Aranda Raquel Montes

Objectives. To compare the effectiveness of four instrument systems for preparing oval root canals: manual instrumentation (Step-Back technique), ProTaper Universal, ProTaper Next, and Wave One. Material and Methods. For the purpose of this assessment, 60 teeth extracted for orthodontic or periodontal reasons, specifically canines and premolars with full coronal and root anatomy, were used and ...

Journal: :Brazilian dental journal 2017
Lídia Regina da Costa Hidalgo Léa Assed Bezerra da Silva Graziela Bianchi Leoni Jardel Francisco Mazzi-Chaves Emily Eduardo da Silva Carvalho Alberto Consolaro Manoel Damião Sousa-Neto

The aim of the study was to evaluate canal preparation in primary molars with hand files, ProTaper Next and Self-Adjusting File (SAF) by 2D and 3D micro-computed tomography (micro-CT) analysis. Canals of 24 primary molars were prepared with hand files (HF), ProTaper Next (PTN) and SAF (n=8/group). The teeth were scanned before and after root canal preparation and the pre- and postoperative micr...

ژورنال: :مجله دانشکده دندانپزشکی مشهد 0
سیاوش سیاوش موشخیان siavash moushekhian assistant professor of endodontics, dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran.استادیار اندودانتیکس، مرکز تحقیقات دندانپزشکی، دانشکده دندانپزشکی، دانشگاه علوم پزشکی مشهدسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) حسین حسین باقری hosein bagheri assistant professor of dental materials, dental materials research center, school of dentistry, mashhad university of medical sciences, mashhad, iran.استادیار مواد دندانی، مرکز تحقیقات مواد دندانی، دانشکده دندانپزشکی، دانشگاه علوم پزشکی مشهدسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) علی علی شهابی ali shahabi dentistدندانپزشک مریم مریم فرقانی maryam forghani assistant professor of endodontics, dental materials research center, school of dentistry, mashhad university of medical sciences, mashhad, iran.استادیار اندودانتیکس، مرکز تحقیقات مواد دندانی، دانشکده دندانپزشکی، دانشگاه علوم پزشکی مشهدسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)

مقدمه: هدف از این مطالعه، بررسی میزان شکست فایل های protaper universal و neoniti در زمان آماده سازی کانال های شبیه سازی شده با انحنای شدید بود. مواد و روش‏ها: 70 بلوک رزینی با کانال‏های شبیه سازی شده با انحنای شدید، به طور تصادفی به دو گروه تقسیم شده و با استفاده از فایل‏های protaper universal و neoniti آماده سازی شدند. هر ست فایل برای پاکسازی و شکل دهی 5 کانال مورد استفاده قرار گرفت. فایل ها پ...

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