Results 21 to 30 of about 20,355 (172)

Inelastic deformation and microcracking process in human dentin [PDF]

Journal of Structural Biology, 2013
Dentin is a mineralized collagen tissue with robust mechanical performance. Understanding the mechanical behaviour of dentin and its relations to the dentinal structure can provide insight into the design strategies to achieve tooth functions. This study focuses on the inelastic deformation of human dentin and its underlying mechanisms.
Eltit, Felipe, Ebacher, Vincent, Wang, Rizhi   +2 more
core   +4 more sources

Effect of root canal preparation, obturation, and retreatment on the induction of dentinal microcracks: A microcomputed tomography study [PDF]

Journal of Conservative Dentistry, 2018
This study evaluated the effect of root canal preparation, obturation, and different techniques of retreatment on the percentage increase in the number of dentinal microcracks using microcomputed tomography (CT) analysis.Forty-five mandibular premolars after micro-CT scanning were prepared using Protaper universal files up to F4 and obturated.
Jain, Apoorva, Nikhil, Vineeta, Bansal, Parul   +2 more
openaire   +4 more sources

Micro-CT analysis of dentinal microcracks on root canals filled with a bioceramic sealer and retreated with reciprocating instruments [PDF]

Scientific Reports, 2020
AbstractThis study aimed to analyze the potential occurrence of dentinal defects after the removal of a root canal filling with two different sealers using Reciproc (RC) or Reciproc Blue (RB). The mesial roots of 60 mandibular molars with a Vertucci type IV configuration were selected.
Almeida, Andressa, Romeiro, Kaline, Cassimiro, Marcely, Gominho, Luciana, Dantas, Eugênia, Silva, Silmara, Albuquerque, Diana   +6 more
openaire   +3 more sources

Comparison of ProTaper, RaCe and Safesider instruments in the induction of dentinal microcracks: a micro‐CT study

International Endodontic Journal, 2015
AbstractAimTo evaluate ex vivo the incidence of microcracks in root dentine after canal preparation with ProTaper Universal (PTU), RaCe or Safesider instrumentation systems using microcomputed tomography (micro‐CT).MethodologyThirty freshly extracted mandibular molars with two separate mesial canals and foramina were used. The roots were allocated into
Ceyhanli, K. T., Erdilek, N., Tatar, I., Celik, D.   +3 more
openaire   +5 more sources

The effects of different root canal instrumentation techniques on dentinal microcracks formation: A narrative review

Saudi Endodontic Journal, 2022
Introduction: The influence of intracanal instrumentation technique on microcrack formation is a debatable subject. This review aimed to review the effect of different root canal instrumentation techniques (hand, continuous rotary, reciprocal rotary ...
Faisal T Alghamdi, Adel S Alqahtani, Othman M Baradwan, Fahad O Almolla, Omar R Alkhattab, Khalid A Merdad   +5 more
doaj   +2 more sources

Study On Dentinal Microcracks During Root Canal Preparation

International Dental Journal
Aim or purpose: Compare dentinal microcrack incidence in premolars/molars after canal preparation with ProTaper Gold (PTG), ProTaper Next (PTN), WaveOne (WO), and WaveOne Gold (WOG).
Qibao Wang, Shaojian Zhao
doaj   +2 more sources

Dentinal Microcrack Formation after Root Canal Instrumentation by XP-Endo Shaper and ProTaper Universal: A Microcomputed Tomography Evaluation

International Journal of Dentistry, 2020
Aim. To evaluate dentinal microcrack formation on root canals instrumented, continuously in the body temperature, with XP-endo shaper (XPES) and ProTaper Universal (PTU), by means of microcomputed tomographic (micro-CT) analysis. Methodology.
Sarah M. Alkahtany, Ebtissam M. Al-Madi
doaj   +2 more sources

Stereomicroscopic evaluation of microcrack formation in dentin by protaper next, revo s, and waveone gold file system

Contemporary Clinical Dentistry, 2021
Background: During the biomechanical preparation of the root canal by rotary file systems, stress is generated within the canal, which leads to dentinal microcrack formation. Such defects are evaluated only under the microscope.
Hena Rahman, Anil Chandra, Monika Khangwal, Akriti Goel, Vijay Kumar Shakya   +4 more
doaj   +3 more sources

Stereomicroscopic evaluation of dentinal microcracks after instrumentation with rotary and reciprocating file systems: An in vitro observational study [PDF]

Bioinformation
Root canal instrumentation was associated with dentinal microcrack formation in all groups, with no statistically significant differences observed. The single-file reciprocating system showed fewer apical microcracks, while the rotary system demonstrated more apical defects but performed better at the coronal level.
Gupta, Vaishnavi, Pandey, Rahul, Hans, Manoj Kumar, Bharati, Nirma, Goel, Archita, Aishwarya, Palsodkar   +5 more
openaire   +3 more sources

Effect of Root Canal Dressings on Extraradicular pH in a Sealed Apex Model: An In Vitro Study [PDF]

Clinical and Experimental Dental Research, Volume 12, Issue 5, October 2026.
ABSTRACT Objectives Endodontic treatment is mandatory after severe dental trauma such as avulsion or intrusion. Initial intracanal dressing with calcium hydroxide should be avoided according to international guidelines due to potential periodontal ligament damage by pH elevation.
Alina Paganini, Eva Magni, Wadim Leontiev, Thomas Connert, Anne Géraldine Guex, Andreas Filippi   +5 more
wiley   +2 more sources