Scanning electron microscopic study of smear layer changes following ultrasonic endoactivator irrigation system during root canal treatment of primary teeth

M. Ghaly, A. Alsherif, A. Khatab
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Abstract

Aims Evaluation of smear layer changes following ultrasonic endoactivator irrigation system during root canal treatment of primary teeth under Electron Microscope. Settings and design The study was conducted as a clinical trial. The laboratory part was carried out at Pediatric Dentistry Department, Faculty of Dentistry, Tanta University, scanning electron microscopic analysis was conducted at electron microscope unit, Faculty of Science, Alexandria University. Patients and methods A total of 40 intact, extracted primary canines (due to serial extraction) were collected and randomly divided into four equal groups' including 10 teeth for each. Group I: irrigation of root canal with sodium hypochlorite by a plastic syringe with end-vented needle. Group II: irrigation of root canal by a plastic syringe with side-vented needle. Group III: the same of group I in conjunction with ultrasonic endoactivator. Group IV: the same of group II in conjunction with ultrasonic endoactivator. Then preparation of specimens was done for scanning electron microscope. Results It was noticed that groups III and IV that used ultrasonic endoactivator had lower scores of smear layer amount than the other groups. Conclusions Ultrasonic endoactivator system in conjunction with conventional irrigation could improve disinfection of the root canals of primary teeth.
超声内激活器灌洗后乳牙根管治疗中涂片层变化的扫描电镜研究
目的在电镜下评价超声内激活器灌洗后乳牙根管治疗过程中涂片层的变化。本研究为临床试验。实验部分在坦塔大学牙科学院儿科牙科学系进行,扫描电镜分析在亚历山大大学理学院电子显微镜部进行。收集连续拔牙的完整原牙40只,随机分为4组,每组10只。第一组:用塑料注射器端部通气针用次氯酸钠冲洗根管。第二组:用塑料注射器侧放针根管灌洗。第三组:同第一组,联合超声内激活剂。IV组:同II组,联合超声内激活剂。然后进行标本制备,扫描电镜观察。结果超声内激活剂III组和IV组的涂片层数评分低于其他组。结论超声内激活器系统配合常规灌洗可提高乳牙根管消毒效果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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