Quantitative evaluation of root canal surface roughness after filing with adaptive reciprocating and continuous rotary instruments

Sakhaei Manesh, Vahid, Giacomin, Paul, and Stoll, Richard (2017) Quantitative evaluation of root canal surface roughness after filing with adaptive reciprocating and continuous rotary instruments. Microscopy Research and Technique, 80 (6). pp. 657-661.

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Abstract

Obtaining clean and smooth root canal walls is the ideal clinical outcome of the cleaning and shaping stage in root canal treatment. This study compares the surface roughness of root canal surfaces instrumented with a NiTi filing system with either adaptive reciprocating (AR) or continuous rotation (CR). Root canal cleaning and shaping was carried out on the mesial canals of 24 extracted first molars roots with either AR or CR. Roots were split in half and the surface roughness of their canals was evaluated in 12 three dimensional roughness reconstructions using a scanning electron microscope. Rz (nm) values were calculated in three areas of each reconstruction and analyzed (alpha=0.05). Mann-Whitney tests showed that surface roughness was significantly higher overall in the AR group (Rz=967 +/- 250 nm) compared with the CR group (Rz=739 +/- 239 nm; p=0.044). The roughness values generally increased from apical towards the coronal third in both groups. A less aggressive finishing file or a continuous rotary system to end the cleaning and shaping stage may be beneficial to reduce roughness of the root canal surface.

Item ID: 50474
Item Type: Article (Research - C1)
ISSN: 1097-0029
Keywords: root canal preparation, scanning electron microscopy, surface roughness
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Additional Information:

A version of this publication was included as Chapter 3 of the following PhD thesis: Sakhaei Manesh, Vahid (2017) Quantitative assessment of covariants of root canal treatment efficacy in human teeth. PhD thesis, James Cook University, which is available Open Access in ResearchOnline@JCU. Please see the Related URLs for access.

Funders: James Cook University (JCU)
Projects and Grants: JCU QLD-602531
Date Deposited: 20 Sep 2017 09:25
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1105 Dentistry > 110503 Endodontics @ 70%
11 MEDICAL AND HEALTH SCIENCES > 1105 Dentistry > 110501 Dental Materials and Equipment @ 30%
SEO Codes: 92 HEALTH > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920118 Surgical Methods and Procedures @ 100%
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