Effect of different torques on dentinal crack formation following canal preparation using neoniti rotary system
Introduction: The aim of this study was to determine the incidence of dentinal cracks in the mesial root of maxillary molar during canal preparation using Neoniti system in different torque settings. Materials &Methods: In this in-vitro study, 60 maxillary molars extracted for various...
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Babol University of Medical Sciences
2018-03-01
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doaj-a53f0fed225c45bdaa5e2af250e2c2d72020-11-24T23:06:43ZengBabol University of Medical SciencesCaspian journal of dental research2251-98902322-23952018-03-0171813Effect of different torques on dentinal crack formation following canal preparation using neoniti rotary systemAkam Saeidi0Mahmoodreza Hamidi1Azadeh Harandi2Mina Habibolahpour3Hemmat Gholinia4 ,Dental Materials Researh Center, Health Research Institute, Department of Endodontics, Faculty of Dentistry, Babol University of Medical Sciences ,Dental Materials Researh Center, Health Research Institute, Department of Endodontics, Faculty of Dentistry, Babol University of Medical Sciences ,Dental Materials Researh Center, Health Research Institute, Department of Endodontics, Faculty of Dentistry, Babol University of Medical Sciences ,Student Research Committee, Babol University of Medical Sciences ,Health Research Institute, Babol University of Medical Scienses Introduction: The aim of this study was to determine the incidence of dentinal cracks in the mesial root of maxillary molar during canal preparation using Neoniti system in different torque settings. Materials &Methods: In this in-vitro study, 60 maxillary molars extracted for various reasons were selected. The teeth were divided into 4 groups: one group(n=15) without preparation was considered as a control group (unprepared control group), the other 3 groups prepared with rotary neoniti system: group with standard torque (1.5 N/CM2)(n=15), group with high torque (2N/CM2)(n=15), and group with low torque (1N /CM2)(n=15). After a canal preparation procedure, the teeth were horizontally sectioned at 3, 6 and 9 mm from the apex. All sections were examined for determining the presence of cracks using a stereomicroscope. Data were analyzed using chi-square test. Results: There was no crack in the control group. The number of cracks was significantly higher in the high-torque group (80%) than standard- and low-torque groups (20%, 26.7%, respectively) (p<0.001). However, no significant difference was found between the standard-torque group and low-torque group (p<0.001). Conclusion: According to this study result, to avoid crack formation in higher torques using motors with torque control option is suggested.http://cjdr.ir/browse.php?a_code=A-10-292-1&slc_lang=en&sid=1Dentin Root canal preparation Torque |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Akam Saeidi Mahmoodreza Hamidi Azadeh Harandi Mina Habibolahpour Hemmat Gholinia |
spellingShingle |
Akam Saeidi Mahmoodreza Hamidi Azadeh Harandi Mina Habibolahpour Hemmat Gholinia Effect of different torques on dentinal crack formation following canal preparation using neoniti rotary system Caspian journal of dental research Dentin Root canal preparation Torque |
author_facet |
Akam Saeidi Mahmoodreza Hamidi Azadeh Harandi Mina Habibolahpour Hemmat Gholinia |
author_sort |
Akam Saeidi |
title |
Effect of different torques on dentinal crack formation following canal preparation using neoniti rotary system |
title_short |
Effect of different torques on dentinal crack formation following canal preparation using neoniti rotary system |
title_full |
Effect of different torques on dentinal crack formation following canal preparation using neoniti rotary system |
title_fullStr |
Effect of different torques on dentinal crack formation following canal preparation using neoniti rotary system |
title_full_unstemmed |
Effect of different torques on dentinal crack formation following canal preparation using neoniti rotary system |
title_sort |
effect of different torques on dentinal crack formation following canal preparation using neoniti rotary system |
publisher |
Babol University of Medical Sciences |
series |
Caspian journal of dental research |
issn |
2251-9890 2322-2395 |
publishDate |
2018-03-01 |
description |
Introduction: The aim of this study was to determine the incidence of dentinal cracks in the mesial root of maxillary molar during canal preparation using Neoniti system in different torque settings.
Materials &Methods: In this in-vitro study, 60 maxillary molars extracted for various reasons were selected. The teeth were divided into 4 groups: one group(n=15) without preparation was considered as a control group (unprepared control group), the other 3 groups prepared with rotary neoniti system: group with standard torque (1.5 N/CM2)(n=15), group with high torque (2N/CM2)(n=15), and group with low torque (1N /CM2)(n=15). After a canal preparation procedure, the teeth were horizontally sectioned at 3, 6 and 9 mm from the apex. All sections were examined for determining the presence of cracks using a stereomicroscope. Data were analyzed using chi-square test.
Results: There was no crack in the control group. The number of cracks was significantly higher in the high-torque group (80%) than standard- and low-torque groups (20%, 26.7%, respectively) (p<0.001). However, no significant difference was found between the standard-torque group and low-torque group (p<0.001).
Conclusion: According to this study result, to avoid crack formation in higher torques using motors with torque control option is suggested. |
topic |
Dentin Root canal preparation Torque |
url |
http://cjdr.ir/browse.php?a_code=A-10-292-1&slc_lang=en&sid=1 |
work_keys_str_mv |
AT akamsaeidi effectofdifferenttorquesondentinalcrackformationfollowingcanalpreparationusingneonitirotarysystem AT mahmoodrezahamidi effectofdifferenttorquesondentinalcrackformationfollowingcanalpreparationusingneonitirotarysystem AT azadehharandi effectofdifferenttorquesondentinalcrackformationfollowingcanalpreparationusingneonitirotarysystem AT minahabibolahpour effectofdifferenttorquesondentinalcrackformationfollowingcanalpreparationusingneonitirotarysystem AT hemmatgholinia effectofdifferenttorquesondentinalcrackformationfollowingcanalpreparationusingneonitirotarysystem |
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1725621499832827904 |