Estudio in vitro de la anatomía interna en premolares superiores mediante el método de diafanización, UCSG semestre B 2022.

Abstract

INTRODUCTION: Endodontic failures occur due to failure to identify the root canal and its ramifications, knowledge of internal anatomy is elementary, using techniques such as diaphanization for study. OBJECTIVE: To determine internal anatomical variations at the root level of the upper premolars by means of the diaphanization method. MATERIALS AND METHODS: In vitro study of 100 upper premolars, divided into two groups of first and second upper premolars. A coronal cut was made, sodium hypochlorite was placed, and Indian ink injection was used in its duct system, to later be decalcified, dehydrated and transparent. RESULTS: According to the types of canals in the Vertucci classification, the first upper premolars prevailed type IV (58%) and the second upper premolars type I (48%). The first premolars are double-rooted (70%) and the second premolars are single-rooted (94%). Infrequently, the upper first premolars had 16% apical deltas and 14% lateral canals, while the upper second premolars had 22% apical deltas and 18% lateral canals. CONCLUSION: According to the types of canals in the first and second upper premolars, they are type IV and type I. The maxillary first premolars are rooted, and the maxillary second premolars have one root. There is a higher prevalence of collateral canals and apical deltas. The location of the foramen in the first and second single-rooted upper premolars is buccal, the first and second double-rooted upper premolars is apical. The two-rooted upper premolars bifurcate in the middle third.