Results 71 to 80 of about 826,321 (147)

Impact of Taper Design on Cleaning Efficacy, Stress Generation, and Irrigant Performance: A Combined Experimental, Finite Element Analysis, and Computational Fluid Dynamics Assessment

Dentistry Journal
Background/Objectives: This study aimed to compare the cleaning efficacy, biomechanical stress distribution under simulated occlusal loading after instrumentation, and irrigant dynamics of three NiTi rotary systems, namely ProTaper Gold, TruNatomy, and ...
Celia Vinuesa Maqueda, Natalia Navarrete, Ana Ramírez-Muñoz, Ana Martín-Díaz, César de Gregorio, José Aranguren, Giulia Malvicini, Simone Grandini, Gaya C. S. Vieira, Alejandro R. Pérez   +9 more
doaj   +1 more source

Navigating Trifurcated Root Anatomy in Maxillary Premolars: A Detailed Endodontic Case Series

Case Reports in Dentistry, Volume 2026, Issue 1, 2026.
A foundational grasp of root canal anatomy is vital for achieving predictable treatment and long‐term outcomes in endodontics. Untreated canal is the primary cause of persistent apical periodontitis following endodontic therapy. Maxillary premolars with three roots and canals exhibit a rare but clinically significant anatomical variation characterized ...
Manigandan Kuzhanchinathan, Harsha Nandhini Doraiswamy, Mathan Rajan Rajendran, Hannah Wesley   +3 more
wiley   +1 more source

A Comparative Study of Cyclic Fatigue Resistance of Different Types of Endodontic Instruments: An in Vitro Study

Erbil Dental Journal
Background and Objectives: Nickel-titanium (NiTi) rotary files are routinely utilized in root canal instrumentations for their flexibility and competency.
Odet Sabah Rassam, Ihsan Nemat Bahnam
doaj   +1 more source

Torsional resistance of three ProTaper rotary systems

BMC Oral Health, 2019
Background The aim of this study is to compare the torsional resistance of the available ProTaper rotary systems, namely, ProTaper Universal (PTU), ProTaper Next (PTN), and ProTaper Gold (PTG).
Abdullah Alqedairi, Hussam Alfawaz, Bader Abualjadayel, Mohammad Alanazi, Ahmad Alkhalifah, Ahmed Jamleh   +5 more
doaj   +1 more source

Nonsurgical Management of Extensive Internal Root Resorption: A 48‐Month Follow‐Up Case Report

Case Reports in Dentistry, Volume 2026, Issue 1, 2026.
A 21‐year‐old male presented with a nonvital right maxillary central incisor with percussion sensitivity and mild mobility. Cone‐beam computed tomography (CBCT) confirmed extensive internal root resorption (IRR) involving nearly the entire root, with a buccal cortical bone defect but no perforation of the root.
Hamdi Alperen Yalcin, Aybike Sayar, Tommaso Lombardi   +2 more
wiley   +1 more source

Comparative evaluation of the effect of autoclave sterilization on the cyclic fatigue resistance of ProTaper Gold, EdgeTaper Platinum, and HyFlex electric discharge machining nickel–titanium endodontic instruments: An in vitro study

Endodontology
Aim: Nickel–titanium (NiTi) rotary instruments have become indispensable in contemporary endodontics due to their remarkable flexibility and superior resistance to cyclic fatigue.
Diksha Maheswari, Ashutosh Shandilya, Shruti Sial, Sanjeev Kunhappan, Divya Jaiswal, K. T. Harisankar   +5 more
doaj   +1 more source

Successful Nonsurgical Resolution of a Large Periapical Lesion With Pre‐Existing Sealer Extrusion and Adjacent External Inflammatory Root Resorption: A Case Report

Case Reports in Dentistry, Volume 2026, Issue 1, 2026.
The primary aim of root canal treatment is to eliminate intracanal infection, achieve an apical and coronal seal, and create conditions that allow repair of the periapical tissues. In root‐filled teeth, persistent apical periodontitis may be associated with extensive periapical lesions, external inflammatory root resorption affecting the treated or ...
Btissam Seffahi, Nisrine Bassim, Faïza Abdallaoui, Barbara Lapinska   +3 more
wiley   +1 more source

Evaluation of the effect of temperature on cyclic fatigue resistance of three types of Nickel-Titanium rotary files with various alloy properties: An in vitro study

Erbil Dental Journal, 2019
Background and objectives: the fracturing of nickel-titanium rotary instruments during endodontic treatment because of the cyclic fatigue remains a common incidence.
Dara H. Saeed, Fadi A. Rafea
doaj  

The influence of autoclave sterilization on the cyclic fatigue of M-wire rotary endodontic instruments [PDF]

Vojnosanitetski Pregled
Background/Aim. The most important moment in modern endodontics is the inclusion of rotating instruments made of nickel-titanium alloy in daily clinical work, which have supplanted stainless steel instruments due to their superior properties.
Stošić Nenad, Popović Jelena, Stanković Antonije, Mitić Aleksandar, Nikolić Marija, Todorović Kosta   +5 more
doaj   +1 more source

INCIDENCE OF APICAL ROOT CRACK FORMATION AFTER ROTARY ROOT CANAL INSTRUMENTATION AT DIFFERENT INSTRUMENTATION LENGTHS USING PROTAPER UNIVERSAL, PROTAPER NEXT AND PROTAPER GOLD FILES - AN IN-VITRO STUDY

, 2021
Aim: To evaluate the incidence of apical root crack formation after root canal preparation using ProTaper Universal (PTU), ProTaper Next (PTN) and ProTaper Gold (PTG) rotary file systems and compare the crack formation at various instrumentation lengths.
Siddheswaran V, Anvesha Parate
core   +1 more source