A comparative study of protaper and twisted file nickel titanium instruments in curved canals preparation
| Autor: | De Lima Dias José Rodolpho, Nevares Giselle, Xavier Felipe, Gominho Ferraz Luciana, de Albuquerque Diana Santana |
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| Jazyk: | English<br />Serbian |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Stomatološki glasnik Srbije, Vol 60, Iss 4, Pp 175-182 (2013) |
| Druh dokumentu: | article |
| ISSN: | 0039-1743 1452-3701 |
| DOI: | 10.2298/SGS1304175D |
| Popis: | Introduction. Root canal instrumentation is performed to achieve cleaning and shaping with maximum preservation of its original anatomy. However, in curved canals this approach may cause excessive damage or canal transportation. The present study aimed to evaluate changes in dentin wall caused by instrumentation of curved canals using two nickel titanium rotary systems, ProTaper and Twisted File. Material and Methods. Twenty five extracted human mandibular first molars with two separated mesial root canals were selected. Distal roots were amputated and 50 canals (25 mesiobuccal and 25 mesiolingual) were randomly assigned into two groups: group 1 - ProTaper, and group 2 - Twisted File. All files were used with torque control engine, following the manufacturer instructions. The final instruments were F3 (group 1) and #30/.06 (group 2). Pre and postoperative cross sections were obtained from coronal, middle, and apical portions. Changes in dentin wall were measured and evaluated using Bramante method and digital image software. Statistical analysis was performed using the Mann Whitney U test (p0.05). Conclusion. ProTaper system produced greater changes in cross sectional area of the root canal compared to Twisted File system. |
| Databáze: | Directory of Open Access Journals |
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