Mechanical and geometric features of endodontic instruments and its clinical effect.
10.5395/JKACD.2011.36.1.1
- Author:
Hyeon Cheol KIM
1
Author Information
1. Department of Conservative Dentistry, Pusan National University School of Dentistry, Yangsan, Korea. golddent@pusan.ac.kr
- Publication Type:Review
- Keywords:
Cross-section;
Fracture;
Geometry;
Heat treatment;
Mechanical response;
NiTi rotary file
- MeSH:
Dental Pulp Cavity;
Dentin;
Hot Temperature
- From:Journal of Korean Academy of Conservative Dentistry
2011;36(1):1-11
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
INTRODUCTION: The aim of this paper is to discuss the mechanical and geometric features of Nickel-titanium (NiTi) rotary files and its clinical effects. NiTi rotary files have been introduced to the markets with their own geometries and claims that they have better ability for the root canal shaping than their competitors. The contents of this paper include the (possible) interrelationship between the geometries of NiTi file (eg. tip, taper, helical angle, etc) and clinical performance of the files as follows; - Fracture modes of NiTi rotary files - Non-cutting guiding tip and glide path - Taper and clinical effects - Cross-sectional area and clinical effects - Heat treatments and surface characteristics - Screw-in effect and preservation of root dentin integrity - Designs for reducing screw-in effect CONCLUSIONS: Based on the reviewed contents, clinicians may have an advice to use various brands of NiTi rotary instruments regarding their advantages which would fit for clinical situation.
