Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Biological and biomechanical evaluation of interface reaction at conical screw-type implants | Head Face Medicine BioMed Central Research Open Access Biological and biomechanical evaluation of interface reaction at conical screw-type implants Andre Buchter 1 Ulrich Joos11 Hans-Peter Wiesmann11 László Seper11 and Ulrich Meyer12 Address department of Cranio-Maxillofacial Surgery University of Munster WaldeyerstraEe 30 D-48129 Munster Germany and department for Cranio- and Maxillofacial Surgery Heinrich-Heine-University Moorenstr 5 D-40225 Dusseldorf Germany Email Andre Buchter - buchtea@ Ulrich Joos - joos@ Hans-PeterWiesmann - wiesmap@ László Seper - seper@ Ulrich Meyer - Meyer@ Corresponding author lEqual contributors Published 21 February 2006 Head Face Medicine2006 2 5 doi 1746-I60X-2-5 Received 20 November 2005 Accepted 21 February 2006 This article is available from http content 2 1 5 2006Buchter et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Initial stability of the implant is in effect one of the fundamental criteria for obtaining long-term osseointegration. Achieving implant stability depends on the implant-bone relation the surgical technique and on the microscopic and macroscopic morphology of the implant used. A newly designed parabolic screw-type dental implant system was tested in vivo for early stages of interface reaction at the implant surface. Methods A total of 40 implants were placed into the cranial and caudal part of the tibia in eight male Gottinger minipigs. Resonance frequency measurements RFM were made on each implant at the time of fixture placement 7 days and 28 days thereafter in all animals. Block biopsies were harvested 7 and 28 days four animals each
