6 documents found, page 1 of 1
Comparison of geometric design, metallurgical features and mechanical behavior ...
Martins,Jorge N.R.; Silva,Emmanuel J.N.L.; Marques,Duarte; Arantes-Oliveira,Sofia; Caramês,João; Versiani,Marco AurélioAbstract Objectives: To assess the characteristics, performance, and safety of ProTaper Gold SX (PTG SX) replica-like instruments. Methods: A multimethod research involving the assessment of geometric design (macro and through scanning electron microscope), Ti/Ni proportions (energy-dispersive X-ray spectroscopy), phase transformation temperatures (differential scanning calorimetry), torsional resistance, and f...
Root canal preparation using micro-computed tomography analysis: a literature r...
Sousa-Neto,Manoel Damião de; Silva-Sousa,Yara Correa; Mazzi-Chaves,Jardel Francisco; Carvalho,Kleber Kildare Teodoro; Barbosa,Ana Flávia SimõesAbstract: This literature review has critically analyzed the published research related to the biomechanical preparation of root canals with three-dimensional analysis using micro-computed tomography (micro-CT). In December 2017, six databases (PubMed, Cochrane, Web of Science, Embase, Scopus, and Science Direct) were accessed using keywords to find articles including the use of the micro-CT analysis in biomech...
Micro-CT Evaluation of Root and Canal Morphology of Mandibular First Premolars ...
Boschetti,Emanuele; Silva-Sousa,Yara Terezinha Correa; Mazzi-Chaves,Jardel Francisco; Leoni,Graziela Bianchi; Versiani,Marco AurélioAbstract The aim of this study was to evaluate morphological features of 70 single-rooted mandibular first premolars with radicular grooves (RG) using micro-CT technology. Teeth were scanned and evaluated regarding the morphology of the roots and root canals as well as length, depth and percentage frequency location of the RG. Volume, surface area and Structure Model Index (SMI) of the canals were measured for ...
Unusual Deviation of the Main Foramen from the Root Apex
Versiani,Marco Aurélio; Ahmed,Hany Mohamed Aly; Sousa-Neto,Manoel Damião de; De-Deus,Gustavo; Dummer,Paul Michael HowellAbstract The relationship of the main foramen to the anatomic root apex has been the subject of several studies. Although they are anatomically close, they rarely coincide, and their distance can vary according to age or tooth type, ranging from 0.2 to 3.0 mm. The aim of this short communication was to evaluate the distance between the main foramen of independent middle mesial canals (MMCs) and the anatomical m...
On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-C...
De-Deus,Gustavo; Belladonna,Felipe Gonçalves; Marins,Juliana Roter; Silva,Emmanuel João Nogueira Leal; Neves,Aline de Almeida; Souza,Erick MirandaAbstract This study aimed to evaluate the cause-effect relationship between canal preparation with ProTaper Universal (PTU) system and dentinal defects formation using micro-computed tomography (micro-CT) analysis. Forty mesial canals of mandibular molars with a type II Vertucci's canal configuration were scanned at an isotropic resolution of 14.16 µm. The sample was assigned to an experimental (n = 30) and a c...
Micro-CT Evaluation of Non-instrumented Canal Areas with Different Enlargements...
De-Deus,Gustavo; Belladonna,Felipe Gonçalves; Silva,Emmanuel João Nogueira Leal; Marins,Juliana Roter; Souza,Erick Miranda; Perez,RenataThe aim of this study was to compare the percentage of non-instrumented area of root canals prepared with different enlargements using single-file reciprocating systems (Reciproc and WaveOne) and a conventional multi-file rotary (BioRaCe) system by micro-computed tomographic analysis. Thirty mesial roots of mandibular molars with moderate curvature (10° to 20°) presenting a type II Vertucci canal configuration ...