Analysis of the influence of degree of curvature in the occurrence of apical deviations after the oscillatory preparation in simulated root canals
Journal Title: RSBO - Year 2010, Vol 7, Issue 3
Abstract
Introduction and objective: This study aims to analyze the influence of degree of curvature in the occurrence of apical deviations after the oscillatory preparation. Material and methods: Twenty simulated root canals of 21 mm in length were divided into two experimental groups according to the degree of curvature: 20° and 40°. The canals were prepared using stainless steel instruments connected to a 10:1 speed reducing contra-angle handpiece with an automatized system of oscillatory movement. When analyzing the deviation, canals were filled with India ink and photographed in a standardized way with the aid of a platform, before and after the accomplishment of the preparation. In sequence, the images obtained were manipulated in Photoshop® Adobe program, preoperative and postoperative images were overlapped, and the deviation was measured with a ruler within 1 mm of working length and in the halfway of curvature. Data were submitted to analysis of variance (Anova) with a significance level of 5%. Results and conclusion: Through the results obtained, it was possible to see that the greater the degree of curvature, the greater the deviation. In relation to the place of analysis, it was possible to realize that there was more deviation in the region of 1 mm of working length than in the halfway of curvature.
Authors and Affiliations
Tiago Melo, André Weber, Dirlei Menon, Renata Soares, Alexandre Salles
The use of the vinegar as a chemical auxiliary in Endodontics: a literature review
Introduction: During the root canal instrumentation with the use of files, there is the formation of a layer called “smear layer”, which may hide among other elements microorganisms capable of perpetuating an endodontic...
The use of ultrasound in periapical curettage: case report
Introduction and objective: This study aimed to demonstrate the possibility of treatment, through periapical curettage with the aid of ultrasound, consequently without the need of resection of root’s apical portion. Case...
Microbiological evaluation of infected root canals and their correlation with pain
Introduction and objective: The aim of this study was to evaluate the endodontic microbiota of human teeth without pulp vitality presenting radiographically visible periapical lesions and its correlation with pre- and po...
Cirurgia parendodôntica: relato de caso
Introduction: Paraendodontic surgery is a procedure that aims problems resolution that couldn’t be solved by the conventional endodontic treatment, or when the accomplishment conventional treatment is not possible....
Short implants in oral rehabilitation
Introduction and objective: The placement of short dental implants is used as an alternative treatment modality to bone grafting procedures. The aim of this study was to discuss, through a literature review, the featur...