نتایج جستجو برای: protaper d series

تعداد نتایج: 907354  

Journal: :International endodontic journal 2010
G De-Deus E J L Moreira H P Lopes C N Elias

AIM To evaluate the cyclic fatigue fracture resistance of engine-driven F2 ProTaper instruments under reciprocating movement. METHODOLOGY A sample of 30 NiTi ProTaper F2 instruments was used. An artificial canal was made from a stainless steel tube, allowing the instruments to rotate freely. During mechanical testing, different movement kinematics and speeds were used, which resulted in three...

Journal: :Brazilian oral research 2013
Mônica Sampaio do Vale Melinna dos Santos Moreno Priscila Macêdo França da Silva Thereza Cristina Farias Botelho

In this study, we compared the ex vivo removal capacity of two endodontic rotary techniques and determined whether there was a significant quantitative difference in residual material when comparing root thirds. Forty extracted molars were used. The palatal roots were selected, and the canals were prepared using a step-back technique and filled using a lateral condensation technique with gutta-...

Journal: :Stomatologija 2009
Eduardas Kelbauskas Laura Andriukaitiene Irena Nedzelskiene

INRODUCTION High-quality filling of root canals is one of indicators of successful endodontic treatment. However, poor-quality of the filling is still a common phenomenon in the work of general practitioners. Better training of dental students of modern odontology is possible solution of the problem. The aim of this study was to evaluate the quality of root canal filling performed by undergradu...

Journal: :International journal of advanced research 2021

Aim: To evaluate the incidence of apical root crack formation after canal preparation using ProTaper Universal (PTU), Next (PTN) and Gold (PTG) rotary file systems compare at various instrumentation lengths. Subjects Methods: One hundred single rooted extracted mandibular premolar teeth were mounted in acrylic resin blocks simulating periodontal ligament. The divided into four groups. Group I w...

Azadeh Taghavi Kashani, Bardia Vadiati Saberi, Kambiz Forghan Parast, Leila Atash Biz Yeganeh, Pooya Nejad Shamsi,

Introduction: The purpose of this study was to compare the antibacterial effect of sodium hypochlorite gel and solution on Enterococcus faecalis (E. faecalis). The main purpose of a root canal treatment is to eliminate the bacteria and their products. Sodium hypochlorite solution has excellent antibacterial properties, but also some negative features. Materials and methods: Fifty six single...

Journal: :iranian endodontic journal 0
sedigheh khedmat abbas azari ahmad reza shamshiri mehdi fadae hoorieh bashizadeh fakhar

introduction: the aim of this in vitro study was to compare the efficacy of protaper retreatment (protaper r) and mtwo retreatment (mtwo r) files in removing gutta-percha and guttaflow from endodontically treated straight root canals. methods and materials: the root canals of 60 human mandibular single-rooted premolars were prepared and randomly divided into two groups ( n =30). in groups a and...

Journal: :Brazilian dental journal 2014
Manoel Brito-Júnior Yara Teresinha Correa Silva-Sousa João Felipe Bonatto Bruniera Carla Cristina Camilo André Luis Faria-E-Silva Paulo César Saquy

This case report describes root canal filling performed over a large S1 ProTaper file fragment in a second mandibular molar with irreversible pulpitis. An S1 ProTaper file was fractured during the instrumentation of the mesiobuccal canal. Approximately 10 mm of file fragment remained in the apical and middle thirds of the canal. The obturation was performed over this fragment using thermomechan...

2008
Nahid Mohammadzade Akhlaghi Zohreh Khalilak Ladan Baradaran Mohajeri Mahshid Sheikholeslami Saeed Saedi

INTRODUCTION The purpose of this study was to evaluate and compare canal preparation pattern of K3 and ProTaper rotary files in curved resin blocks. MATERIALS AND METHODS Twenty-four resin blocks were used in this experimental study and randomly divided into two groups. Their initial images were scanned. After preparation, their images were scanned again in the same position. Pre and post pre...

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