Effects on the incidence of dentinal microcracks in curved root canal preparation with ProTaper Universal and ProTaper Gold
10.12016/j.issn.2096-1456.2021.10.003
- Author:
LI Shuhui
1
,
2
;
REZIYA Aini
1
,
2
;
YAERKEN Aji
1
,
2
;
RIZIWANGULI Amuti
1
,
2
;
GAO Yuan
3
,
4
,
5
;
HUANG Dingming
3
,
4
,
5
Author Information
1. Department of Stomatology, People&rsquo
2. s Hospital of Xinjiang Uygur Autonomous Region
3. State Key Laboratory of Oral Diseases &
4. National Clinical Research Center for Oral Diseases &
5. Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University
- Publication Type:Journal Article
- Keywords:
dentinal cracks;
root canal procedure;
ProTaper Gold;
ProTaper Universal;
curved root canal
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2021;29(10):663-668
- CountryChina
- Language:Chinese
-
Abstract:
Objective:This study aims to compare the incidence of dentinal microcracks produced by ProTaper Universal (PTU) and ProTaper Gold (PTG) file systems during root canal procedures in different curved canals using a dyeing technique.
Methods:Sixty extracted human molars were divided into 3 groups of 20 samples each in terms of root curvature (mild bending group, 10 °-19 °; moderate bending group, 20 °-29 °; severe bending group, 30 °-39 °). Ten samples of each group were then randomly allocated to the PTU and PTG file systems. After preparation, all roots were stained using a dyeing method and sectioned at the most curved plane and 2 mm below and above the most curved plane with a low-speed saw under cold water. A stereomicroscope was used to inspect dentinal microcracks at 60 × magnification, and differences between these three instrument groups were analyzed using the chi-square test.
Results : The PTG file system induced significantly fewer dentinal microcracks for total, incomplete and complete cracks (P < 0.05), and the effect was more obvious with increasing canal curvature.
Conclusion : With the limitations of this in vitro study, it can be concluded that ProTaper Gold can result in fewer dentinal microcracks than ProTaper Universal.
- Full text:ProTaper Gold和ProTaper Universal在弯曲根管预备中对牙本质微裂产生的影响.pdf
