Year : 2021

Volume : Volume 12

Issue : Issue 6

Address for correspondence :
Dr. Niharika Mishra
dentistniharika@gmail.com

Abstract

Background: During Obturation, the variations present at the tip of the gutta-percha (GP) cone often causes premature binding, extrusion, poor adaptability to canal walls, microleakage leading to endodontic failure. The purpose of this investigation was to measure the variability from the listed cone tip diameter and taper of size #25, 0.06 taper GP cones from three different brands with the help of stereomicroscope and digital
micrometer. Materials and Methods: Forty-five GP points (n = 45) of size #25 with an 0.06 taper from three different brands were divided into Group A – Diadent, Group B – K3, and Group C – ProTaper Next. Each group has 15 GP (n =15). The diameters and tapers were measured at D0 and D3 according to the American National Standard Institute/American Dental Association Specification No. 78 using stereomicroscope and digital micrometer. Kruskal–Wallis test and Mann–Whitney U-test were to detect any significant differences between two or more groups and pairwise comparison, respectively. P < 0.05 was considered as statistically significant. Results: The standard values for D0 diameter which was 0.25 ± 0.23, ProTaper Next GP cones were the similar to the standardized values compared to Diadent and K3 GP cones which were significantly different from the standard values. On comparing diameter variation at D3, ProTaper Next, 0.043 ± 0.018 was once again similar to its manufacturer standard values of 0.43 ± 0.022. Conclusion: High variability exists between the different brands of GP, the clinician should anticipate the discrepancy and must depend on the manufacturer’s reported specification of GP cones to be as accurate as possible.
Keywords: Obturation, Diameter variation, Endodontics, Gutta-percha, Taper