MAGGIOLO VILLALOBOS, Silvana et al. Comparative Analysis of Dentin Removal by two Endodontic Techniques. []. , 16, 4, pp. 401-407. ISSN 1025-0255.

ABSTRACT Background: one of the most important aspects in treating dental root canals is the mechanical root canal preparation. Objective: to compare two techniques for quantifying endodontic instrumentation, searching which one removes the least amount of dentin.  Methods: the sample consisted of 30 mandible molars extracted and stored in chloramines T to 12%.  The group 1 (n = 15) was treated with a manual rotary technique using Gates-Glidden drills while group 2 (n = 15) was instrumented with a rotational technique using Pro-Taper files. Following instrumentation root in the two experimental groups was measured in the cervical portion, and apical half of each distal canal. The evaluation of periapical radiographs was processed with Adobe Photoshop. The statistical analysis used unpaired t test. Results: for the group 1 the measurements cervical, middle and apical were 0.48 mm, 0.27 mm and 0.21 mm, respectively, while for the group 2 were 0.69 mm, 0.31 mm and 0.24 mm, respectively. Only statistically significant differences in the cervical portion of the two groups were showed, viewing less wear dentin in group 1 (p = 0.01). Conclusions: higher cervical root dentin removal in canals treated with Pro-Taper files was observed.

: TOOTH, NONVITAL; ENDODONTICS; DENTIN; TECHNIQUES.

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