نتایج جستجو برای: rotary instrumentation

تعداد نتایج: 28291  

Journal: :iranian endodontic journal 0
maryam vossoghi mitra vossoghi shahriar shahriari farhad faramarzi rasoul yousefi mashouf maryam farhadian

introduction: this in vitro study aimed to assess the effectiveness of a single-file rotary system (oneshape) in reduction of intracanal bacteria. methods and materials: eighty one single-rooted mandibular first premolars with single canals were used. six samples were selected as aseptic control group. seventy five remaining specimens were infected by enterococcus faecalis and incubated for 72 ...

Journal: :iranian endodontic journal 0
narges farhad mollashahi eshagh ali saberi seyed rohollah havaei mohammad sabeti

introduction: root canal preparation techniques may cause postoperative pain. the aim of the present study was to compare the intensity of postoperative pain after endodontic treatment using hand files, single file rotary (oneshape), and single file reciprocating (reciproc) systems. methods and materials: in this single-blind, parallel-grouped randomized clinical trial a total of 150 healthy pa...

2015
Zahra Sadat Madani Daryoush Goudarzipor Azam Haddadi Akam Saeidi Ali Bijani

INTRODUCTION Apical transportation changes the physical shape and physiologic environment of the root canal terminus. The aim of the present experimental study was to determine the extent of apical transportation after instrumentation with hand K-Flexofile and K3 rotary instruments by means of cone-beam computed tomography (CBCT). METHODS AND MATERIALS Forty mesiobuccal root canals of maxilla...

Journal: :International endodontic journal 2009
A Moinzadeh M De Bruyne

AIM To investigate the morphological changes in the apical third of the root canal after preparation with three techniques. METHODOLOGY Forty molar teeth were scanned using micro-computed tomography before and after instrumentation with: Group 1 - stainless steel K-files using the balanced force technique; Group 2 - stainless steel K-files (balanced force) and then refining the apical prepara...

Journal: :Journal of endodontics 2016
Ana Grasiela da Silva Limoeiro Antônio Henrique Braitt Dos Santos Alexandre Sigrist De Martin Augusto Shoji Kato Carlos Eduardo Fontana Giulio Gavini Laila Gonzales Freire Carlos Eduardo da Silveira Bueno

INTRODUCTION Cleaning and shaping without making procedural errors have always been a challenge in endodontics, particularly when the root canals are curved. Several rotary instruments have been developed to minimize such errors. The purpose of this study was to compare the shaping ability of 2 rotary file systems, BioRace (BR; FKG, La Chaux-de-Fonds, Switzerland) and ProTaper Next (PTN; Dentsp...

Journal: :Brazilian oral research 2015
André Pagliosa Manoel Damião Sousa-Neto Marco Aurélio Versiani Walter Raucci-Neto Yara Teresinha Corrêa Silva-Sousa Edson Alfredo

The endodontic preparation of curved and narrow root canals is challenging, with a tendency for the prepared canal to deviate away from its natural axis. The aim of this study was to evaluate, by cone-beam computed tomography, the transportation and centering ability of curved mesiobuccal canals in maxillary molars after biomechanical preparation with different nickel-titanium (NiTi) rotary sys...

Journal: :Medicina oral, patologia oral y cirugia bucal 2009
Milagros Martín-Micó Leopoldo Forner-Navarro Amelia Almenar-García

OBJECTIVE To determine variation in post-instrumentation working length and root area in the following rotary systems: ProTaper, RaCe, Mtwo and K3. STUDY DESIGN A sample of 40 resin blocks with double curvature (at 14 and 16 mm) and a 33 degrees angle was used. Working length was verified with a digital measure using a number 10 K file. The specific sequence for each rotary system was followe...

2015
Yan Lu Min Chen Feng Qiao Ligeng Wu

BACKGROUND The aim of this study was to compare the apical and coronal extrusions by using two reciprocating and two rotary instrumentation systems. METHODS Eighty extracted human single-rooted anterior teeth were randomly assigned to four groups. Four different root canal instrumentation systems were used according to the manufacturers instructions, including two reciprocating single-file sy...

Journal: :Journal of endodontics 2014
Ismail Davut Capar Hakan Arslan Merve Akcay Huseyin Ertas

INTRODUCTION The purpose of this study was to compare the in vitro amount of apically extruded debris with new endodontic rotary nickel-titanium instruments. METHODS Sixty mandibular premolars were instrumented up to size 25 using ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland), ProTaper Next (Dentsply Maillefer), Twisted File Adaptive (SybronEndo, Orange, CA), and HyFlex (Co...

Journal: :International endodontic journal 2014
J M Tinoco G De-Deus E M B Tinoco F Saavedra R A S Fidel L M Sassone

AIM To evaluate ex vivo, apical bacterial extrusion associated with two reciprocating single-file systems (WaveOne and Reciproc) compared with a conventional multifile rotary system (BioRace). METHODOLOGY Forty-five human single-rooted mandibular incisors were used. Endodontic access cavities were prepared, and root canals were contaminated with an Enterococcus faecalis suspension. Following ...

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