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The effect of curvature angle and rotational speed on the cyclic fatigue of three types of rotary instrument (In vitro) : comparative study
المؤلفون المشاركون
al-Azzawi, Abd al-Karim J.
Mukhlif, Thair A.
المصدر
Journal of Baghdad College of Dentistry
العدد
المجلد 25، العدد 1 (31 مارس/آذار 2013)، ص ص. 38-42، 5ص.
الناشر
تاريخ النشر
2013-03-31
دولة النشر
العراق
عدد الصفحات
5
التخصصات الرئيسية
الموضوعات
الملخص EN
Background : The fracture of instruments within root canal during endodontic treatment is a common incidence, fracture because of fatigue through flexure occurs due to metal fatigue, this study aimed to assess the effect of curvature angle and rotational speed on the cyclic fatigue of different type of Endodontic NiTi Rotary Instruments and compare among them. Materials and method : Three types of rotary instruments with tip size 0.25 : ProTaPer F2 (Densply, Malifier) Revo-S SU (0.06 taper, MicroMega) and RaCe system (0.06 taper, FKG, Dentaire), Forty file of each instrument were used within two canals with angle of curvature (40 and 60 )at two speed (250&400)RPM, twelve group were formed for all instruments(total number = 120), ten file for each group.
The testing canals customized within stainless steel block covered with glass face, the time to fracture recorded and the mean of cycles to fracture (MCF) detected for each instrument.
Data were analyzed statistically by ANOVA, LSD and Independent T-test at 5 % significant level. Result : there was a highly significant difference of curvature angle and significant difference of rotational speed on the fracture resistance of instruments.
RaCe revealed the best fracture resistance followed by ProTaper then Revo-S that showed the less resistance. Conclusion : The rotary instruments more prone to fracture when used at more curvature angle and higher rotational speed, as well as the rotary instruments differ from each other according to manufacturing process, taper, cross section and other factors.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Mukhlif, Thair A.& al-Azzawi, Abd al-Karim J.. 2013. The effect of curvature angle and rotational speed on the cyclic fatigue of three types of rotary instrument (In vitro) : comparative study. Journal of Baghdad College of Dentistry،Vol. 25, no. 1, pp.38-42.
https://search.emarefa.net/detail/BIM-324048
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Mukhlif, Thair A.& al-Azzawi, Abd al-Karim J.. The effect of curvature angle and rotational speed on the cyclic fatigue of three types of rotary instrument (In vitro) : comparative study. Journal of Baghdad College of Dentistry Vol. 25, no. 1 (Mar. 2013), pp.38-42.
https://search.emarefa.net/detail/BIM-324048
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Mukhlif, Thair A.& al-Azzawi, Abd al-Karim J.. The effect of curvature angle and rotational speed on the cyclic fatigue of three types of rotary instrument (In vitro) : comparative study. Journal of Baghdad College of Dentistry. 2013. Vol. 25, no. 1, pp.38-42.
https://search.emarefa.net/detail/BIM-324048
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes appendices : p. 41-42
رقم السجل
BIM-324048
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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