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Submitted: 31 Jul 2022
Revision: 10 Sep 2023
Accepted: 27 Sep 2023
ePublished: 29 Dec 2023
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Avicenna J Dent Res. 2023;15(4): 167-172.
doi: 10.34172/ajdr.1637
  Abstract View: 65
  PDF Download: 59

Original Article

Evaluation of Dentin Cracks by Stereomicroscope after Preparation of Mesiobuccal Canal of Maxillary First Molars Using Edge Taper Platinum and ProTaper Gold Rotary Files: A Laboratory Study

Narjes Hoshyari 1 ORCID logo, Seyedali Seyedmajidi 2 ORCID logo, Anahita Lotfizadeh 3 ORCID logo, Eghlima Malakan 3 ORCID logo, Abolfazl Hosseinnataj 4 ORCID logo, Azam Haddadi Kohsar 1* ORCID logo

1 Department of Endodontics, Dental Research Center, Mazandaran University of Medical Sciences, Sari, Iran
2 Dental Materials Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
3 Dentist, Mazandaran, Iran
4 Department of Biostatistics, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran
*Corresponding Author: Azam Haddadi Kohsar, Email: haddadi_azam@yahoo.com

Abstract

Background: Successful root canal treatment depends on correct cleaning, widening, and shaping of the root canal system. Root canal preparation using rotary files can cause dentin cracks. This study aimed to evaluate the number of dentin cracks created after the preparation of the mesiobuccal root canal of the first maxillary molars by ProTaper Gold and Edge taper platinum rotary files using a stereomicroscope.

Methods: In this laboratory study, 72 maxillary first molars were collected and randomly divided into three groups (n=24): control group, ProTaper Gold group, and Edge taper platinum group. Mesiobuccal canal preparation was performed in Edge taper platinum and ProTaper Gold groups up to file size F2. All roots were cut horizontally at distances of 3, 6, and 9 mm from the apex with a disc. The sections were examined under a stereomicroscope at 40x magnification. Fisher’s exact test and Chi-square test were used in SPSS version 22.0 for analyzing data. A significant level of 5% was considered.

Results: In the control group, no cracks were observed in any of the sections. At 3 and 9 mm from the apex, the ProTaper Gold group had the highest frequency of cracks and at 6 mm from the apex, the Edge taper platinum group had the highest frequency of cracks. There was no significant difference in the frequency of dentin cracks between ProTaper Gold and Edge taper platinum groups in any of the sections.

Conclusion: Both ProTaper Gold and Edge taper platinum systems caused the formation of dentin cracks. Preparation of root canals by Edge taper platinum and ProTaper Gold rotary files causes the formation of dentin cracks to the same extent.


Please cite this article as follows: Hoshyari N, Seyedmajidi S, Lotfizadeh A, Malakan E, Hosseinnataj A, Haddadi Kohsar A. Evaluation of dentin cracks by stereomicroscope after preparation of mesiobuccal canal of maxillary first molars using edge taper platinum and protaper gold rotary files: a laboratory study. Avicenna J Dent Res. 2023; 15(4):167-172. doi:10.34172/ajdr.1637
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