Natural Frequency and Histological Analysis

• Main Authors: wei-Juyn Huang, 黃威軍
• Other Authors: Sheng-Yang Lee
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/69040339014554444654

碩士 === 台北醫學院 === 口腔復健醫學研究所 === 90 === Abstract Title of hesis：Natural Frequency and Histological Analysis of Dental Implant Author：Wei-Juyn Huang Thesis directed by： Sheng-Yang Lee DDS,MS,PhD Bay-Rong Guo DDS,MS The goal of this study is to use the natural frequency analytic test, measuring the natural frequency within the bone healing process after the implantation, than comparing the histological sections, so that we could analyze the correlations between the natural frequency signal changes and bone healing around the boundary condition for the dental implant, current study will also established a data base. In the end to develop a simple interment which is capable of providing a objective and noninvasive quantitative assessment for the evaluation of the condition right after the implantation and in the following healing stages. This study uses 8 adult beagle dogs ( weight from 9 to 12 kgs), bone healing observation stages divided in to 8 stags: 1, 2, 3, 4, 9, 12, 16, and 26 wks. Each stage has one dog. Every dog was implanted with 6 pure titanium implants: fixture ( 10 mm x 4.0 mm), .healing cap ( 2.0 mm x 4.0 mm) We performed natural frequency model testing over each stage after operation. After that we made histological sections. The histological assessment indicates that the peri-implant bony structure becomes amateur and complete osseointegration in 9 weeks, and the bone structure appears stable without changes until 26 weeks. The trend of statistical analysis over natural frequency shows identical results. The natural frequency of a successful dental implant is 7.0 kHz ~ 9.0 kHz. Natural frequency test is a useful non-invasive detective method that is capable of providing a noninvasive quantitative assessment for the evaluation of the condition right after the implantation and in the following healing stages for dental implants. Key Words: dental implant, natural frequency, osseointegration