Year : 2018

Volume : Volume 9

Issue : Issue 1

Address for correspondence :
Dr. Vaibhav Jain
dr.vaibhavj7@gmail.com

Abstract

im: Evaluation of straight-line access and fracture resistance of mandibular anterior teeth by conventional lingual access and incisal access approach using CBCT and Universal testing machine respectively.  Materials and Method: 72 extracted permanent mandibular incisors and canines of similar dimensions were selected and divided into three groups i.e. intact teeth without endodontic access cavity (control), incisal access (Group II) and lingual access (Group III).  Positions of straight-line access in group II were determined on the mesio-distal digital imaging. The root canal was divided into cervical, middle, and apical third. A midline was drawn connecting the midpoints and extending in incisal direction. The point, at which the line crossed the external crown surface, was recorded as vestibular, incisal, or oral. This represented the centre point or the ideal access. After endodontic access cavity preparation in Group II and Group III CBCT images were acquired.  Later, fracture resistance was evaluated using Universal testing machine.  Results: In mandibular anteriors, the straight-line access to the root canal was obtained from the incisal edge. The results for the fracture resistance testing showed that, the Group III (lingual Access) demonstrated the least mean value of fracture resistance and was highly significant.  Conclusion: Within limitation of this in-vitro study, it can be concluded that incisal access opening provides a straight-line access to apex and better fracture resistance as compared to that of conventional lingual approach in mandibular anterior.

Keywords: Access Cavity, Fracture Resistance, Mandibular Anteriors, Straight Line Access.