ASPECTE ALE MORFOLOGIEI RADICULARE INTERNE A MOLARULUI TREI MAXILAR.

Introduction: Third molar morphology is very complex due to the variety of shapes and also to the number of roots and canals, which makes its treatment a real challenge and trial for the practitioner. Objectives: This study aims to analysing the internal radicular morphology of three molars, using a contrastive substance injected on the channel and the technique of teeth transparency. Materials and method: 38 teeth extracted on various reasons were studied after removing the dental pulp. An intracanalicular injection of a contrast substance (China ink) followed. The teeth were decalcified using nitric acid and were subsequently made transparent by using methil salicilate in order to point out aspects of internal radicular anatomy. Results: Third maxillary molars presented Ventucci types II and IV canals for mesio-vestibulary root, Ventucci I type canals for disto-vestibular and palatal roots. Intercanalicular communication was frequntly found at the level of the mesio root and lateral canals were found especially in the apical third. Conclusions: Knowledge of internal radicular morphology considerably improves the therapeutic vision leading to the suceess of endodontic treatment. [ABSTRACT FROM AUTHOR]