Authors
Amit Kumar, Mamta Kaushik, Neha Mehra, Neha Verma, Tripti Rathore
Published in
Journal of conservative dentistry and endodontics. Volume 28. Issue 3. Pages 279-284. Epub Mar 03, 2025.
Abstract
Apical debris extrusion can result in complications leading to unfavorable clinical outcomes.
This in vitro study aimed to ascertain the influence of apical size and variation of instrument taper on the apical extrusion of debris.
Forty roots from sixty recently extracted human permanent mandibular molars were selected. The apical diameter was measured using an image analysis program and divided into two groups: mesial roots for narrower canals (N) (n = 20) and distal roots for wider canals (W) (n = 20). These were further subdivided based on preparation size and instrument taper as #25/0.04 and #25/0.06 for narrower and #30/0.04 and #30/0.06 for wider canals.
The canals were prepared using Hero Shapers, with double distilled water as irrigant. The extruded debris was collected using the Myers and Montgomery method.
The mean weight of extruded debris was analyzed using the Kolmogorov-Smirnov test. The Mann-Whitney test compared the differences in the weight of debris between different tapers and different canal widths. The level of significance was set at P ≤ 0.05.
Narrow canals prepared using #25/0.06 showed significantly more debris extrusion when compared to #25/0.04 (P = 0.017). Wider canals, when instrumented with a #30/0.04, had more extrusion of debris than #30/0.06. However, the difference between 0.04 and 0.06 taper was not significant.
The apical diameter and instrument taper are essential factors to be considered to minimize debris extrusion. Narrower diameter, when instrumented with greater taper, exhibited more apical debris extrusion.
PMID:
40256690
Bibliographic data and abstract were imported from PubMed on 21 Apr 2025.
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