نتایج جستجو برای: protaper

تعداد نتایج: 807  

2017
Taha Özyürek Koray Yılmaz Gülşah Uslu

OBJECTIVES The aim of this study was to evaluate the cyclic fatigue resistance of the ProTaper Universal D1 file (Dentsply Maillefer) under continuous and adaptive motion. MATERIALS AND METHODS Forty ProTaper Universal D1 files were included in this study. The cyclic fatigue tests were performed using a dynamic cyclic fatigue testing device, which had an artificial stainless steel canal with ...

Journal: :The journal of contemporary dental practice 2013
Sunita Shivanand Chetan R Patil Venugopal Thangala Pabbati Ravi Kumar Jyoti Sachdeva Akash Krishna

AIM To evaluate and compare the efficacy, cleaning ability of hand and two rotary systems in root canal retreatment. METHODOLOGY Sixty extracted premolars were retreated with following systems: Group -ProTaper Universal retreatment files, Group 2-ProFile system, Group 3-H-file. Specimens were split longitudinally and amount of remaining gutta-percha on the canal walls was assessed using direc...

2016
Sandeep Lal

The objective of the study was to evaluate the bacteria extruded apically during root canal preparation using hand and two rotary instrumentation techniques. The method include eighty freshly extracted mandibular premolars were mounted in bacteria collection apparatus. Root canals were contaminated with the pure culture of Enterococcus faecalis (ATCC 29212) and dried at 37 0 c for 24 hour. Then...

Journal: :Brazilian oral research 2013
Cacio Moura-Netto Renato Miotto Palo Carlos Henrique Ribeiro Camargo Cornelis Hans Pameijer Marcia Regina Ramalho da Silva Bardauil

The aim of this study was to compare two endodontic preparation systems using micro-CT analysis. Twenty-four one-rooted mandibular premolars were selected and randomly assigned to two groups. The samples (n = 12) of Group 1 were prepared using the ProTaper Universal rotary system, while Group 2 (n = 12) was prepared using the EndoEZE AET system complemented by manual apical preparation with K-t...

2017
Taha Özyürek Vildan Tek Koray Yılmaz Gülşah Uslu

Objectives To determine the incidence of crack formation and propagation in apical root dentin after retreatment procedures performed using ProTaper Universal Retreatment (PTR), Mtwo-R, ProTaper Next (PTN), and Twisted File Adaptive (TFA) systems. Materials and Methods The study consisted of 120 extracted mandibular premolars. One millimeter from the apex of each tooth was ground perpendicula...

2012
Young-Sil Yoo Yong-Bum Cho

OBJECTIVES The study was to compare the shaping ability of Reciproc (VDW) and WaveOne (Dentsply Maillefer) instruments compared with ProTaper, Profile and hand instrument during the preparation of simulated root canals. MATERIALS AND METHODS Five groups (n = 5) were established. Reciproc, WaveOne, ProTaper, Profile and K file (K-flexo file) were used to prepare the resin simulated canals. A s...

Journal: :JPMA. The Journal of the Pakistan Medical Association 2017
Sana Ehsen Nagi Farhan Raza Khan Munawar Rahman

OBJECTIVE To compare the remaining dentine thickness of root canals prepared with K-3 and ProTaper files.. METHODS This in-vitro experimental study was conducted from 1st April-30th September 2015 at the dental clinics of Aga Khan University Hospital, Karachi, and comprised human teeth. Extracted human premolars and molars were included in the study using non-probability consecutive sampling....

Journal: :journal of dentistry, tehran university of medical sciences 0
maryam ehsani babol university of medical sciences, robab farhang babol university of medical sciences, azadeh harandi babol university of medical sciences, saeid tavanafar general practitioner maryam raoof kerman university of medical sciences saeedeh galledar

objectives: during root canal preparation, apical extrusion of debris can cause inflammation, flare-ups, and delayed healing. therefore, instrumentation techniques that cause the least extrusion of debris are desirable. this study aimed to compare apical extrusion of debris by five single-file, full-sequence rotary and reciprocating systems. materials and methods: one hundred twenty human mandi...

مقدمه: تغییر زاویه خمیدگی کانال خصوصا در کانال‏های خمیده جزء اتفاقات مرحله آماده‏سازی می‏باشد. فایل‏های چرخشی نیکل- تیتانیوم که برای آماده‏سازی کانال طراحی و عرضه شده اند، می‏توانند این مشکلات را کمتر کنند. همچنین مساله زمان در درمان ریشه بسیار اهمیت دارد. هدف از مطالعه حاضر مقایسه سه سیستم چرخشی Reciproc، ProTaper و ProTaper Next از لحاظ میزان تغییر زاویه خمیدگی و مدت زمان آماده‏سازی کانال ریش...

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