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Histologic evaluation of three endodontic instrument/preparation techniques
Author(s) -
Zuolo M. L.,
Walton R. E,
Imura N.
Publication year - 1992
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1111/j.1600-9657.1992.tb00449.x
Subject(s) - dentistry , dental instruments , root canal filling materials , engineering , orthodontics , forensic engineering , medicine , root canal
33 curved canals were prepared to quantify both the increase in canal area and predentin removal in the apical region. Compared were three different file designs/instrumentation techniques, that is “stepback” with K‐flex file, “balanced force” with Flex‐R file, and the Canal Master system. Following canal preparation and histological processing, cross‐sections at 1 and 3 mm levels were examined using the Bioquant image analysis system. Results showed that, at the 3 mm leve, the mean increase in canal area and predentin removal showed no statistically significant difference (p> 0.05) between the techniques. At 1 mm. the step‐back technique (with K‐flex files) resulted in a significant increase in canal area and greater predentin removal than did the “balanced forces” (with Flex‐R files) or the Canal Master system. However, although there were statistical differences, the actual differences were small; these may not translate to clinically significant differences in the 3 techniques.