Dental Journal of Advance Studies

Sangam Mittal ¹, Navneet Kukreja ¹, Devendra Chaudhary ², Abhishek Bansal ¹, Jyoti Bansal ¹, Disha Agarwal ¹

Affiliations
1 MM College of Dental Sciences and Research, Ambala, Haryana, IN
2 Maharaja Ganga Singh Dental College, Ganga Nagar, Rajasthan, IN

Abstract

The last decade has been witness to phenomenal growth in endodontic technology. The introduction of these new technologies has resulted in endodontics becoming easier, faster and most importantly, better. NiTi alloys overall are softer than stainless steel, are not heat treatable, have a low modulus of elasticity (about one fourth to one fifth that of stainless steel) but a greater strength, are tougher and more resilient, and show shape memory and superelasticity. The latter two properties are the main reasons why NiTi alloys have succeeded in endodontics. The purpose of this article is to review the design features of different rotary instruments used for pulp space preparation. Important mechanical features include the variability of taper, rake angle, crosssectional geometry, tip configuration, design of blades, helical angle and pitch. These design features influence flexibility, cutting efficiency and safety. In this review, design features of commonly used NiTi rotary systems are summarized.

Keywords

Helical Angle, Nickel Titanium Alloys, Rotary Endodontics, Rake Angle, Taper.

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Artinder Kaur ¹, Devendra Chaudhar ², Navneet Kukreja ³, Abhishek Bansal ⁴, Jyoti Bansal ⁵, Urvashi Kukreja ⁶

Affiliations
1 Department of Conservative Dentistry and Endodontics, MM College of Dental Sciences And Research, Mullana, Ambala, IN
2 Department of Conservative Dentistry and Endodontics, Vice Principal and Maharaja Ganga Singh Dental College Ganganagar, Rajasthan, IN
3 Department of Conservative Dentistry and Endodontics, MM College of Dental Sciences and Research, Mullana, Ambala, IN
4 Department of Conservative Dentistry And Endodontics, MM College of Dental Sciences and Research, Mullana, Ambala, IN
5 Department of Periodontics, MM College of Dental Sciences and Research, Mullana, Ambala, IN
6 Department of Prosthodontics, MM College of Dental Sciences and Research, Mullana, Ambala, IN

Abstract

Nickel titanium rotary shaping files fundamentally changed everything in endodontics; conceptually, procedurally and economically as well. NiTi rotary files made ischolar_main canal therapy more accessible and kind of fun for dentists, and dental companies were loved for making files that cost four times more than stainless steel hand files but delivered a ten times improvement. The single file systems need no disinfecting, cleaning, sterilizing and organizing the NiTi files, provide optimal cutting efficiency along with better control of file breakage and thus increased patient safety and no risk for cross contamination.

Keywords

Bio-Mechanical Preparation, Canal Centering Ability, Single File Rotary System.

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