Brazilian Dental Journal | |
CT evaluation of apical canal transportation associated with stainless steel hand files, oscillatory technique and ProTaper rotary system | |
Mateus Silveira Martins Hartmann2  Vânia Regina Camargo Fontanella1  José Roberto Vanni2  Volmir João Fornari2  Fernando Branco Barletta1  | |
[1] ,Uningá Dental School Department of Endodontics | |
关键词: canal transportation; computed tomography; Endodontics; root canal instrumentation; | |
DOI : 10.1590/S0103-64402011000400005 | |
来源: SciELO | |
【 摘 要 】
This study used computed tomography (CT) to compare apical canal transportation in mesiobuccal canals of maxillary molars prepared with different techniques. Sixty teeth were assigned to 3 groups (n=20), according to the technique used for root canal instrumentation: hand instrumentation with K-Flexofiles, K-Flexofiles activated by an oscillatory system and ProTaper NiTi rotary system. Pre and post-instrumentation CT images were obtained 3 mm short of the apical foramen and were superimposed to compare canal transportation. Data were analyzed statistically by ANOVA and Tukey's test using the SPSS software (α=0.05). In the buccal direction, the manual technique produced significantly less canal transportation than the oscillatory technique (p<0.05) and both were similar to the rotary technique (p>0.05). In the distal and distopalatal directions, the oscillatory technique produced more canal transportation (p<0.05). In the mesiopalatal direction, the oscillatory technique produced more canal transportation than the manual technique (p<0.05), and both were similar to the rotary technique (p>0.05). In conclusion, all techniques produced canal transportation, and the oscillatory technique produced the greatest removal of root dentin toward the innerside of the root curvature.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
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RO202005130109726ZK.pdf | 328KB | download |