Cyclic Fatigue Resistance of Three Different Rotary Ni-Ti Instruments
Marwa Mostafa Helmy Ghorab;
Abstract
The aim of the study was to evaluate the effect of autoclaving and curvature severity on Mpro,2Shape and Revo-s systems.
Total of ninty six files #25 with 6% of these brands were selected for the study, Cyclic fatigue testing was done using a cyclic fatigue testing device along with a custom made artificial stainless steel canals which had 60° and 3mm radius of curvature, and 45° and 5mm radius of curvature. There was three groups, each (n=32). Each group was subdivided into 2 subgroups according to sterilization: Subgroup a (non-sterilized) and Subgroup b (Sterilized for 5 cycles), each subgroup was further subdivided into two subdivisions according to the curvature and radius : Subdivision 1 (in the canal of 60° curvature and radius 3 mm.) and Subdivision 2 (in the canal of 45° curvature and radius 5 mm.) samples were rotated continuously until fracture in the artificial canals under body temperature to simulate clinical conditions.
Total of ninty six files #25 with 6% of these brands were selected for the study, Cyclic fatigue testing was done using a cyclic fatigue testing device along with a custom made artificial stainless steel canals which had 60° and 3mm radius of curvature, and 45° and 5mm radius of curvature. There was three groups, each (n=32). Each group was subdivided into 2 subgroups according to sterilization: Subgroup a (non-sterilized) and Subgroup b (Sterilized for 5 cycles), each subgroup was further subdivided into two subdivisions according to the curvature and radius : Subdivision 1 (in the canal of 60° curvature and radius 3 mm.) and Subdivision 2 (in the canal of 45° curvature and radius 5 mm.) samples were rotated continuously until fracture in the artificial canals under body temperature to simulate clinical conditions.
Other data
| Title | Cyclic Fatigue Resistance of Three Different Rotary Ni-Ti Instruments | Other Titles | مقارنة مقاومة المجهود الدوري بين ثلاثة أنظمة دوارة مختلفة من النيكل تيتانيوم | Authors | Marwa Mostafa Helmy Ghorab | Issue Date | 2019 |
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