Comparison of Dentinal Microcrack Formation in Root Canal after Mechanical Instrumentation with 4 Single-File Rotary Systems
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Abstract
The purpose of this study was to compare the formation of microcracks after root canal preparation performed with different single-file rotary systems; HyFlexEDM, Reciprocblue, WaveOneGold and XP-Endoshaper. Fifty-four human extracted teeth which 20-30 degree of curved root, 1 root canal and 1 apical foramen were used. The teeth were divided into 4 different rotary systems preparation (n = 12): Group 1 –HyFlexEDM, Group 2 –Reciprocblue, Group 3 –WaveOneGold, Group 4 - XP-Endoshaper and a control group (unprepared teeth; n = 6) by stratified random sampling. Roots were sectioned at 3, 6 and 9 mm from the apex, then the surface was investigated under a stereomicroscope. The results showed that no cracks were observed in the control group. For rotary preparation groups, HyFlexEDM, Reciprocblue, XP-Endoshaper and WaveOneGold were found dentinal microcracks in median of number of cracks on 9.33 (5.66, 16.99), 8.84 (4.58, 10.42), 7.34 (2.00, 10.57) และ 6.33 (2.50, 12.17) respectively. No significant differences between the mean number of cracks of all four groups in 3, 6, 9 mm level from the apex sections (p–value>0.05) were found. Completed cracks were observed in HyFlexEDM, Reciprocblue and WaveOneGold. Conclusion from this study, root canal preparation with four single-file rotary systems were created dentinal microcracks with no statistically difference, however HyFlexEDM showed tendency of the most microcracks and WaveOneGold showed of the least microcracks.
Article Details
บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการลงตีพิมพ์ในวิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นถือเป็นลิขสิทธิ์เฉพาะของคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือเพื่อกระทำการใด ๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษร จากคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นก่อนเท่านั้น
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