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Evaluation of Root Canal Preparation Using Rotary System and Hand Instruments Assessed by Micro-Computed Tomography

Miranda Stavileci, Veton Hoxha, Ömer Görduysus, Ilkan Tatar, Kjell Laperre, Jeroen Hostens, Selen Küçükkaya, Edmond Muhaxheri

Department of Dental Pathology and Endodontics, University of Prishtina, Faculty of Medicine, Prishtina, Kosovo

Med Sci Monit Basic Res 2015; 21:123-130

DOI: 10.12659/MSMBR.893950

Available online: 2015-06-20

Published: 2015-06-20


BACKGROUND: Complete mechanical preparation of the root canal system is rarely achieved. Therefore, the purpose of this study was to evaluate and compare the root canal shaping efficacy of ProTaper rotary files and standard stainless steel K-files using micro-computed tomography.
MATERIAL AND METHODS: Sixty extracted upper second premolars were selected and divided into 2 groups of 30 teeth each. Before preparation, all samples were scanned by micro-computed tomography. Thirty teeth were prepared with the ProTaper system and the other 30 with stainless steel files. After preparation, the untouched surface and root canal straightening were evaluated with micro-computed tomography. The percentage of untouched root canal surface was calculated in the coronal, middle, and apical parts of the canal. We also calculated straightening of the canal after root canal preparation. Results from the 2 groups were statistically compared using the Minitab statistical package.
RESULTS: ProTaper rotary files left less untouched root canal surface compared with manual preparation in coronal, middle, and apical sector (p<0.001). Similarly, there was a statistically significant difference in root canal straightening after preparation between the techniques (p<0.001).
CONCLUSIONS: Neither manual nor rotary techniques completely prepared the root canal, and both techniques caused slight straightening of the root canal.

Keywords: Dental Instruments, Bicuspid - pathology, Dental Pulp Cavity - surgery, Root Canal Preparation - standards, X-Ray Microtomography - methods