Anatomía interna mediante diafanización de primeros molares inferiores extraídos en la Clínica UCSG semestre A-2017.

Abstract

Introduction: The success of endodontic treatment is considered a challenge when locating, cleaning and shaping the root system since it has been shown that one of the main causes of failure is related primarily to an untreated duct, this phenomenon is caused due to lack of accurate knowledge of the variations of the root canal system by the operator. This lack of knowledge leads to compromise the main objective of this treatment, which is to achieve the improvement of diseased tissues and thus stimulate the cementogenic, osteogenic activities. Purpose and / or objective: To determine the internal anatomy of the first permanent lower molars extracted in the UCSG clinic with the diaphanization method. Materials and methods: For this in vitro study, 89 lower first molars were collected from surgery classes II, III and IV at the dental clinic of Universidad Católica Santiago de Guayaquil. The teeth were diaphanized using Robertson’s modified technique. The number of roots, root canal conformation, number of ducts, presence of isthmuses and degree of radicular curvature were studied. Results: 97% of the samples have 2 roots. In the mesial roots the presence of isthmuses was shown in 34 of the samples and in 18 of the distal roots. The predominant conduit configuration was type IV with two mesial ducts and a distal conduit. The curvature observed in the mesial root most frequently was moderate in mesial and mild in distal. Conclusions: The lower first molars frequently exhibit two roots. The mesial root presents two ducts with greater incidence and the configurations of the predominant ducts are the type IV and II. In the distal root is type I with 63%. The incidence of root isthmus present in the mesial root of lower first molars was greater in the articles reviewed in the present research work. Measurement of radicular curvature should be further investigated.