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Shaping Ability of 5(th) Generation Ni-Ti Rotary Systems for Root Canal Preparation in Curved Root Canals using CBCT:
Jain Deepak1, Medha Ashish2, Neelam Patil3
1Reader, Department of Conservative Dentistry and Endodontics, School of Dental Sciences, Karad, Maharashtra, India.
Journal of International Oral Health : JIOH
|July 31, 2015
Summary
The OneShape (OS) system demonstrated superior canal centering and less transportation in curved root canals compared to ProTaper Next (PTN) and Revo S (RS) systems. All tested rotary systems similarly straightened canal curvature.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Fifth-generation rotary root canal systems claim enhanced flexibility and debris removal due to their offset design.
- Evaluating the impact of these advanced systems on root canal morphology is crucial for clinical success.
Purpose of the Study:
- To compare the effects of three fifth-generation rotary systems on canal curvature, transportation, and centering ratio.
- To assess the performance of OneShape (OS), ProTaper Next (PTN), and Revo S (RS) systems in curved mesiobuccal canals of mandibular molars using cone-beam computed tomography (CBCT).
Main Methods:
- Sixty mandibular molars with 20-40° curvature were divided into three groups (n=20 each).
- Canals were shaped to apical size 25 using OS, PTN, or RS systems.
- Pre- and post-instrumentation CBCT imaging was used to evaluate canal curvature, transportation, and centering ratio.
Main Results:
- The OneShape (OS) system resulted in significantly less canal transportation and better centering ratio compared to PTN and RS.
- No significant differences were observed among the groups regarding changes in canal curvature after instrumentation.
Conclusions:
- All tested rotary file systems demonstrated similar effects on straightening root canal curvature.
- The OneShape (OS) system exhibited superior performance in maintaining canal shape, evidenced by reduced transportation and improved centering ratio, compared to Revo S and ProTaper Next systems.
