Efficacy of five rotary systems versus manual instrumentation during endodontic retreatment

Brazilian Dental Journal

Luiz Fernando Fariniuk²  Vânia Portela Dietzel Westphalen²  Ulisses Xavier Da Silva-neto²  Everdan Carneiro²  Flares Baratto Filho¹  Sandra Rivera Fidel¹  Rivail Antônio Sérgio Fidel¹ 

[1] ,Pontifical Catholic University of Paraná

关键词: gutta-percha removal;    nickel-titanium files;    root canal retreatment;    rotary instrumentation;   

DOI  :  10.1590/S0103-64402011000400006

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY   
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