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
Keywords
Related Articles
- EP ID EP97032
- DOI -
- Views 199
- Downloads 0
The antimicrobial action analysis of coronary temporary sealing materials used in<br /> endodontics
The purpose of this study was to evaluate the antimicrobial activity of two temporary sealing materials (Vitro Fill and Vitro Molar) through a mixed culture of Pseudomonas aeruginosas and Enterococcus faecalis, as well...
Hereditary gingival fibromatosis – a case report and management using a novel surgical technique
Introduction: Hereditary gingival fibromatosis (HGF) is a rare condition presenting varied degrees of gingival enlargement. HGF can present as an isolated entity or as part of a syndrome. Current literatures report a def...
Determination of pH, buffering capacity, total carbohydrates and sucrose in sugar-free and light processed fruit juices
Introduction: Tooth erosion is the irreversible loss of dental hard tissues caused by acids and/or chelation without bacterial involvement. Many studies showed that there is an increase of tooth erosion in population an...
Evaluation of different mechanical surface treatments in tensile strength of direct<br /> composite resin repairs
The aim of this study was to compare the effect of different mechanical surface treatments in the tensile strength of direct composite resin repairs. 12 specimens were obtained in halter form, for the control group, an...
Evaluation of apical foramen in canine human teeth
The variation of the position of the apical foramen added to the radiopacity structures of the bony area, it almost always hinders your identification through the exam of the x-rays, could alter the prognostic of the tre...