کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7866004 | 1509131 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Osseodensification outperforms conventional implant subtractive instrumentation: A study in sheep
ترجمه فارسی عنوان
استئوآرتریت زدگی از ابزارهای کمکی حذف ایمپلنت معمولی بیشتر است: مطالعه در گوسفند
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
چکیده انگلیسی
Six endosteal implants were inserted bilaterally in the ilium of five sheep totaling 60 implants (nâ¯=â¯30 acid-etched and nâ¯=â¯30 as-machined). Each animal received three implants of each surface. The osteotomy sites were prepared as follows: (i) subtractive conventional-drilling (R): 2â¯mm pilot, 3.2â¯mm and 3.8â¯mm twist drills; (ii) osseodensification clockwise-drilling (CW), and (iii) osseodensification counterclockwise-drilling (CCW) with Densah Burs (Versah, Jackson, MI, USA) 2.0â¯mm pilot, 2.8â¯mm, and 3.8â¯mm multi-fluted tapered burs. Insertion torque, bone-to-implant contact (BIC) and bone-area-fraction occupancy (BAFO) were evaluated. Drilling techniques had significantly different insertion torque values (CCWâ¯>â¯CWâ¯>â¯R), regardless of implant surface. While BIC was not different as a function of time, BAFO significantly increased at 6-weeks. A significantly higher BIC was observed for acid-etched compared to as-machined surface. As-machined R-drilling presented lower BIC and BAFO than acid-etched R, CW, and CCW. New bone formation was depicted at 3-weeks. At 6-weeks, bone remodeling was observed around all devices. Bone chips within implant threads were present in both osseodensification groups. Regardless of implant surface, insertion torque significantly increased when osseodensification-drilling was used in low-density bone. Osseodensification instrumentation improved the osseointegration of as-machined implants to levels comparable to acid-etched implants inserted by conventional subtractive-drilling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 90, 1 September 2018, Pages 300-307
Journal: Materials Science and Engineering: C - Volume 90, 1 September 2018, Pages 300-307
نویسندگان
Paula G.F. Pessôa de Oliveira, Edmara T.P. Bergamo, Rodrigo Neiva, Estevam A. Bonfante, Lukasz Witek, Nick Tovar, Paulo G. Coelho,