Changes in root canal anatomy using three nickel-titanium rotary system: a cone beam computed tomography analysis
Braz. j. oral sci
;
12(4): 307-312, Oct.-Dec. 2013. ilus
Article
in English
| LILACS
| ID: lil-701318
ABSTRACT
AIM:
Cone beam computed tomography (CBCT) was used to evaluate the ability of three NiTi rotary systems to maintain the original root canal anatomy.METHODS:
Sixty mesiobuccal canals of human mandibular first molars were divided into three groups with 20 root canals each. All teeth were scanned by CBCT before instrumentation. The images were captured digitally for further analysis using the Image Tools Software. The images were sectioned in three points, located at 9 mm, 6 mm and 3mm from the apex. In Group 1, the root canals were instrumented with ProTaper UniversalTM rotary system; in Group 2, with Twisted FileTM rotary system; and in Group 3, with MtwoTM rotary system. Instrumented teeth were scanned again using CBCT and the images of the uninstrumented canals were compared with images of the instrumented canals. The results were statistically analyzed using the one-way ANOVA test. A level of significance of 0.05 was adopted.RESULTS:
The means of D1 at distances of 9 mm, 6 mm, and 3 mm from the apex were, respectively Group 1 0.88±0.257, 1.00±0.000, and 1.00±0.000; Group 2 0.79±0.745, 0.65±0.669, and 0.25±0; Group 3 0.50±0.745, 0.33±0.472, and 0.03±0.104. The means of D2 at distances of 9 mm, 6mm, and 3mm from the apex were respectively Group 1 1.00±0.00, 1.00±0.00, and 1.00±0.00; Group 2 0.41±0.299, 0.30±0.428, and 0.50±0.707; Group 3 0.58±0.910, 0.85±1.857, and 0.31±0.643.CONCLUSIONS:
The CBCT analysis revealed that the ProTaper UniversalTM produced centered preparations and while the Twisted FileTM and MtwoTM rotary systems produced canal deviation.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Root Canal Preparation
/
Dental Pulp Cavity
/
Cone-Beam Computed Tomography
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2013
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Federal University of Pernambuco/BR
Similar
MEDLINE
...
LILACS
LIS