Estudio anatómico de los conductos radiculares del primer premolar superior con dos raíces mediante la técnica de diafanización dental

Abstract

It has been demonstrated that root canals anatomy may present big anatomical variations. It is very important for dental clinical activity to know those

variations because success or failure of endodontic treatment relies on suck knowledge. The purpose of this research was to describe the anatomy of the

roots canals of two roots first upper premolar. Then, 40 teeth were diaphanized, they were opened (cameral opening) to have them waterproofed with type K

endodontic files numbers six and eight, the teeth were submerged in sodium hypochlorite at 3.5% by 24 hours to dissolve their organic structure. The

samples were washed with normal water and placed in nitric acid for 3 days, later they were immersed in water. After the decalcification was completed, the

process of dehydration was started. It consisted of placing the samples in alcohol concentrations at 60%, 80% and 97%. Then, the teeth were grounded on

transparency when placed in methyl salicylate at 99.9%. Once the process finished, china ink was injected into the duct system. Finally, the samples were

examined according to Vertucci´s classification for the analysis of root canals anatomy. The most frequently observed duct in the first upper premolar with

two roots was type I, followed by types V and VI. The duct type II was observed for two samples whereas type III was seen only in one. Type IV, type VII and type VIII were not found.