Root Canal Curvature Assessment Employing Manual And Rotary Instrumentation Technique .An In-Vitro Study.

Abstract

Background:

Endodontics is the study of the form, function, diseases, health and injuries of the dental pulp and peri radicular region. It also deals with their prevention and treatment. Manual instruments have been used since long now significant development in modern endodontic instrumentation is introduction of Rotary files. In this study we have compared root canal curvature maintenance by manual and rotary instrumentation technique.
The objective of the study is to determine changes in root canal curvature after preparation with manual or rotary instrumentation technique

Methods:

This In vitro Quasi Experimental study was carried out over a period of six months. Mandibular molars, extracted due to caries or periodontal reasons and mesiobuccal canals, with curvature between 20- 400 were included. In Group A preparation was carried out with ProTaper instruments and in group B with manual NiTi files. An ISO #15 NiTi file was placed in the canal and radiograph taken to determine working length, radiograph was scanned, print made and canal curvature determined. Upon completion of preparation, radiograph with #30 NiTi file was taken and the working length was assessed. The same radiograph was scanned, and changes in curvature were assessed by comparing preoperative and postoperative prints. Data analysis was done with Paired and Independent sample t-tests using Statistical Package for the Social Sciences (SPSS) version 20.0 available at university campus. P-value < 0.005 was taken as statistically significant.

Results:

Difference in Pre and Post-operative root canal curvature was lower in ProTaper group, but not satisfactorily significant.

Conclusion:

ProTaper instrumentation technique maintained curvature better than manual instrumentation technique.

Key Words:

Root Canal Therapy, root canal preparation, pulpectomy