این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Iranian Endodontic Journal، جلد ۳، شماره ۲، صفحات ۲۴-۲۸
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی A Comparative Study on Rotary Mtwo Versus Passive Step Back of Hand K-File in Preparation of Extracted Curved Root Canals
چکیده انگلیسی مقاله INTRODUCTION: The preparation of the root canal space includes debridement, shaping and apical preparation. These procedures are challenging and constitute. The recent introduction of automated techniques for canal preparation has created considerable interest. The aim of this study was to test shaping ability of one hand instrumentation (passive step-back technique) and new rotary NiTi system (Mtwo instrumentation) in curved root canals. MATERIALS AND METHODS: A total number of 40 curved molars selected for this in vitro study, 20 canals for each group. The mean of canal curvature in studied groups was similar. After preparation of access cavity, samples were divided into two groups. A custom made block was used for standardization of radiograph beam angel before and after preparation. In group 1, samples instrumented with passive step-back technique using stainless steel K-file, Gates Glidden and Pesso reamers. Mtwo NiTi rotary file and Endo IT power driven motor were used for instrumentation of samples in group 2. Transportation of canals curvature (loss of primary curvature) after canal preparation was assessed for each sample with the aid of AutoCAD 2007 software. Stereomicroscope provided data for measurement of changes in working length after canal preparation. RESULTS: The mean of changes in canals curvature (canal transportation) and mean of working length changes in group 1 (passive step-back technique) were 11.77 degree and 0.202 mm (P< 0.001) and in group 2 (rotary Mtwo) were 5.58 degree and 0.202 mm (P< 0.001). According to the present results, the original canal curvature was maintained significantly better with automated Mtwo files than with hand instrumentation. CONCLUSION: These can be hypothesized that the instrumentation with Mtwo NiTi rotary file preserves the canal curvature adequately.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله صافی لعیا | safi laaya
department of endodontics, dental school, shiraz university of medical science, shiraz, iran

سازمان اصلی تایید شده: دانشگاه شیراز (Shiraz university)

لیلا خجسته پور | leila khojastehpour
department of oral radiology, dental school, shiraz university of medical sciences, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

عبدل حسین لایق نژاد | abdol hosein layeghnejad
general practitioner, shiraz, iran
نشانی اینترنتی http://journals.sbmu.ac.ir/iej/article/view/404
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده Original Article
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات