Results 161 to 170 of about 1,129,395 (186)
Some of the next articles are maybe not open access.

Evaluation of the Shaping Characteristics of ProTaper Gold, ProTaper NEXT, and ProTaper Universal in Curved Canals

Journal of Endodontics, 2015
This study evaluated the shaping characteristics of the ProTaper Gold system (PTG; Dentsply Maillefer, Ballaigues, Switzerland) and compared it with that of the ProTaper Next (PTN, Dentsply Maillefer) and ProTaper Universal (PTU, Dentsply Maillefer) systems using micro-computed tomographic imaging.Twenty-four mandibular first molars with 2 separate ...
Jason, Gagliardi   +4 more
openaire   +2 more sources

Flexibility and Torsional Strength of ProTaper and ProTaper Universal Rotary Instruments Assessed by Mechanical Tests

Journal of Endodontics, 2009
The purpose of this study was to assess how the geometric and dimensional changes made on ProTaper Universal (PTU) instruments in comparison with ProTaper (PT) instruments affected their flexibility and torsional strength. Two groups (n = 12) of each type of shaping (S1 and S2) and finishing (F1, F2, and F3) for both PT and PTU instruments were ...
Vicente Tadeu Lopes Buono   +2 more
exaly   +4 more sources

Effectiveness of ProTaper Universal Retreatment Instruments Used With Rotary or Reciprocating Adaptive Motion in the Removal of Root Canal Filling Material

open access: yesInternational Endodontic Journal, 2015
Aim To compare the effectiveness of ProTaper Universal retreatment instruments with continuous rotation and adaptive motion (AM; a modified reciprocating motion that combines rotational and reciprocating motion) in the removal of filling ...
Ismail Davut Çapar, Hakan Arslan
exaly   +2 more sources

Comparative investigation of 2 rotary nickel-titanium instruments: protaper universal versus protaper

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 2009
The objective of this study was to evaluate whether the changes in the design of the ProTaper canal instruments contribute to the shaping ability of the instrument in terms of the morphology of curved canals measured by the cross-sectional area using the Bramante method.Ten extracted human mandibular molars with root canal curvatures between 25 degrees
Unal, Gul Celik   +3 more
openaire   +5 more sources

Torque and Force Induced by ProTaper Universal and ProTaper Next During Shaping of Large and Small Root Canals in Extracted Teeth

Journal of Endodontics, 2014
The purpose of this study was to compare peak torque and force between ProTaper Universal (PTU) and ProTaper Next (PTN) instruments during the preparation of large and small root canals in extracted teeth.Twelve maxillary incisors and each independent canal of 6 mesial roots of mandibular molars were randomly assigned to be prepared with a new set of ...
Ove Andreas Peters   +2 more
exaly   +6 more sources

Evaluation of the Resistance to Cyclic Fatigue among ProTaper Next, ProTaper Universal, and Vortex Blue Rotary Instruments

Journal of Endodontics, 2014
The purpose of this study was to compare the fracture resistance to cyclic fatigue of ProTaper Next (PTN; Dentsply Tulsa Dental Specialties, Tulsa, OK), ProTaper Universal (PTU, Dentsply Tulsa Dental Specialties), and Vortex Blue (VB, Dentsply Tulsa Dental Specialties) rotary instruments.Twenty instruments each of PTN X1-X5, PTU S1-F5, and VB 20/04-50 ...
Nguyen, Harrison H.   +5 more
openaire   +5 more sources

An in vitro comparison of apically extruded bacteria with ProTaper Gold, ProTaper Universal and ProTaper Next rotary systems .

2020
Aim: The aim of this study was to evaluate the number of bacteria extruded from the tooth apex after root canal instrumentation using three nickel-titanium rotary systems.
BAĞ, İREM   +2 more
openaire   +2 more sources

Occurrence of Dentinal Microcracks in Severely Curved Root Canals with ProTaper Universal, WaveOne, and ProTaper Next File Systems

Journal of Endodontics, 2015
This study aims to compare the incidence of dentinal microcracks produced by the ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland), WaveOne (Dentsply Maillefer), and ProTaper Next (Dentsply Maillefer) file systems during root canal procedures in severely curved canals using a dyeing technique.Sixty extracted human molars with 25° to 40 ...
Shu-hui, Li   +6 more
openaire   +2 more sources

Comparison of the centring ability of the ProTaper™ and ProTaper Universal™ rotary systems for preparing curved root canals

Australian Endodontic Journal, 2010
AbstractThe aim of this in vitro study was to compare the centring ability of the ProTaper™ and ProTaper Universal™ rotary systems for preparing curved root canals, by means of preoperative and postoperative imaging of a cross‐section of their coronal, middle and apical thirds.
Carlos Menezes, Aguiar   +4 more
openaire   +2 more sources

Shaping ability of ProTaper NEXT, ProTaper Universal and iRace files in simulated S‐shaped canals

Australian Endodontic Journal, 2015
AbstractThe aim of this study was to determine the shaping ability of three nickel‐titanium endodontic file systems by comparing three parameters: canal deviation, apical foramen position and instrumentation time. A glide path was established in 30 simulated S‐shaped canal blocks that were randomly assigned into three groups (n = 10): ProTaper ...
Sirawut, Hiran-us   +4 more
openaire   +2 more sources

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