Comparative Study on Root Canal therapy Preparation with Rotating Tools Protaper Gold And Hyflex cm
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 6
Abstract
Aim: In the case of teeth clinically diagnosed with acute pulp irritation or complicated gangrene with periradicular lesions, endodontic treatment is the choice used by practitioners. The purpose of this in vitro study is to compare the ability of the rotary instruments, ProTaperGold and HyFlex CM, to preapare canals with medium and severe curves on extracted teeth. Materials and methods: This experimental study was performed on 24 extracted permanent teeth, maxillary and mandibular molars without root resorption. Chemo-mechanical treatment was performed only at the mesiovestibular and distal-vestibular canals of the upper molars, but also at the mesio-lingual and mesio-vestibular canals of the lower molars. The canals were divided into two groups (n = 28 each) and prepared with ProTaper Gold or HyFlex CM nickel titanium instrumentation, with the VDW Gold Reciproc Endodontic Engine. The fracture of the instruments during use, the reduction of the working length, and time needed for preparation were evaluated. The reduction of the working length was evaluated by making the difference between the initial working length and the final working length with pre-and post-instrumentation with rotary files on X-rays and Kodak Dental Imaging Software. The preparation time was measured in seconds using the Eurochron Timer EDT 9000 Schwarz timer. Results: Teeth prepared with the HyFlex CM rotary tools achieved a lower reduction in working length (average = 0.15mm) compared to those prepared with Protaper Gold (0.22mm), statistically insignificant differences. During the preparation of the 56 canals, a ProTaper instrument and one Hyflex CM were broken. The fracturing occurred at the second and third use respectively. Regarding the preparation time, the shortest time was obtained with the HyFlex CM system (960 s), compared to the ProTaper system (1123s), again, the differences being statistically insignificant. Conclusions: Canal preparation using the two Ni-Ti rotation systems did not lead to a major alteration of root system anatomy or working length. Therefore, we can conclude that ProTaper Gold andHyFlex CM are comparable in efficiency in preparing medium and severe curves.
Authors and Affiliations
Stefania Chisamera, Oana Diaconu, Ionela Teodora Dascălu, Marilena Bătăiosu, Andreea Anghel, Iren Alina Moraru, Ana Maria Rîcă, Mihaela Jana Țuculină
Keywords
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- EP ID EP600587
- DOI 10.9790/0853-16060298103
- Views 59
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