| Literature DB >> 21861028 |
Luiz Fernando Fariniuk1, Vânia Portela Dietzel Westphalen, Ulisses Xavier da Silva-Neto, Everdan Carneiro, Flares Baratto Filho, Sandra Rivera Fidel, Rivail Antônio Sérgio Fidel.
Abstract
The purpose of this study was to evaluate the efficiency of ProFile, GT, ProTaper, Race and K3 rotary instruments compared with hand K-files for removal of gutta-percha during retreatment. Sixty mandibular premolars were instrumented with GT rotary files and filled by thermomechanical compaction of gutta-percha and AH Plus sealer. The teeth are randomly divided into 6 groups of 10 specimens each. The roots were split longitudinally, digital images were created using a flatbed scanner, and the areas with remaining filling material were demarcated using Image Tool 1.21 software. The results indicate that GT left significantly less (p<0.05) remaining filling material (1.18 ± 1.47) than hand (3.70 ± 3.16) and Hero instruments (2.99 ± 2.58). There was no statistically significant difference (p<0.05) among the others techniques: ProFile (1.99 ± 2.66), ProTaper (2.00 ± 1.99) and K3 (2.71 ± 2.87) when compared with GT. In conclusion, GT, ProFile, ProTaper and K3 were more effective in removing gutta-percha than manual and Hero instruments.Entities:
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Year: 2011 PMID： 21861028 DOI： 10.1590/s0103-64402011000400006
Source DB: PubMed Journal: Braz Dent J ISSN： 0103-6440