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Change in working length following instrumentation of molar canals

Authors
Journal
Oral Surgery Oral Medicine Oral Pathology
0030-4220
Publisher
Elsevier
Publication Date
Volume
41
Issue
1
Identifiers
DOI: 10.1016/0030-4220(76)90260-7
Keywords
  • Endodontics

Abstract

Abstract A study to determine the mean reduction in working length following instrumentation of molar canals was carried out on a sample of extracted teeth. Each canal was measured before and after instrumentation. Those canals having the greatest curvature showed the greatest reductions in working length. The largest change was observed in the mesiobuccal canals of the maxillary molars with a mean reduction of 0.35 mm. None of the observed changes were statistically significant.

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