A Novel Digital Technique to Analyze the Wear of CM-Wire NiTi Alloy Endodontic Reciprocating Files: An In Vitro Study

The present study seeks to describe a novel digital measurement technique for analyzing the wear volume of controlled memory (CM)-wire NiTi alloy endodontic reciprocating files after clinical use. Ten CM-wire NiTi endodontic reciprocating files were randomly used in ten first upper molar teeth withi...

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Published in:International journal of environmental research and public health 2022-03, Vol.19 (6), p.3203
Main Authors: Faus-Matoses, Vicente, Faus-Llácer, Vicente, Aldeguer Muñoz, Álvaro, Alonso Pérez-Barquero, Jorge, Faus-Matoses, Ignacio, Ruiz-Sánchez, Celia, Zubizarreta-Macho, Álvaro
Format: Article
Language:English
Subjects:
Alloys
Bending stresses
Boolean algebra
Computed tomography
Cutting wear
Dentistry
Digital imaging
Endodontics
Intermetallic compounds
Measurement techniques
Medical imaging
Medical research
Metal fatigue
Nickel titanides
Reproducibility
Root canals
Shape memory alloys
Statistical analysis
Teeth
Wire
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Summary:The present study seeks to describe a novel digital measurement technique for analyzing the wear volume of controlled memory (CM)-wire NiTi alloy endodontic reciprocating files after clinical use. Ten CM-wire NiTi endodontic reciprocating files were randomly used in ten first upper molar teeth within four root canals. The CM-wire NiTi alloy endodontic reciprocating files were subjected to preoperative and postoperative micro-computed tomography (micro-CT) scans to obtain accurate digital imaging and communication on medicine (DICOM) digital files, which were segmented using intensity-based thresholding and an exclusive OR (XOR) logical operation (Boolean algebra logical operator) to obtain a mask of the location to localize and quantify the wear volume of the CM-wire NiTi alloy endodontic reciprocating files. Gage repeatability and reproducibility statistical analysis was applied to assess the reproducibility and repeatability of this measurement technique. The analysis showed a repeatability and reproducibility of 0.00% for the digital measurement technique used to analyze the wear volume of CM-wire NiTi alloy endodontic reciprocating files after clinical use. Wear was mostly identified at the tip and cutting edges of the CM-wire NiTi alloy endodontic reciprocating files. This novel digital measurement technique is a repeatable, reproducible, and accurate method of quantifying the wear volume of CM-wire NiTi alloy endodontic reciprocating files after clinical use.
ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph19063203