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頁籤選單縮合
題 名 | Examination of a Novel Designed Device Used for Dental Implants Stability Detection--An Animal Study=以實驗動物模型驗證一新設計之牙科植體穩固度裝置 |
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作 者 | 黃豪銘; 鄭光祐; 林哲堂; 黃威軍; 姚維正; 鄭璧瑩; 李勝揚; | 書刊名 | Journal of Medical and Biological Engineering |
卷 期 | 24:3 2004.09[民93.09] |
頁 次 | 頁155-162 |
分類號 | 416.96 |
關鍵詞 | 自然頻率; 牙科植體; 裝置; 組織切片; 穩固度; Natural frequency; Dental implant; Device; Histology; Stability; |
語 文 | 英文(English) |
中文摘要 | 本研究利用自然頻率技術,設計一人工牙科植體檢測裝置,並以體內及體外實驗驗證以此裝置進行牙科植體穩固度狀態偵測的可行性。在本研究中,定義自然頻率增加率(natural frequency increasing ratio, NFIR)為觀測時間點的自然頻率值與其初始量測值之間的增加百分率。並以NFIR為參數作為量化評估的依據。在體外測試中,根柱狀的牙科植體以夾箝座固定,並利用改變挾持力量來模擬植體穩固度的改變。實驗結果發現,當挾持扭力由2 N-cm增加至10 N-cm時,以傳統模態測試法量測到的NFIR值,與本實驗設計的裝置之量測值之間沒有統計上的差異(p=0.053)。當把牙科植體植入實驗狗隻的下顎骨,並以本實驗設計的感測裝置加以量測時,發現該植入之植體的NFIR值在前八週會連續的增加。其中第一週的NFIR平均值為0.13±0.048,到了第八週時則明顯的增加至0.408±0.076(p<0.05),其後量測值維持在一高原期。當把體內實驗的NFIR變化曲線與組織切片比較時發現,兩者之間具有很強的相關性。因此我們結論認為,利用本研究設計之自然頻率檢測裝置,作為偵測牙科植體骨整合過程的工具,具有可行性。 |
英文摘要 | Natural frequency (NF) technology was used to design a dental implant stability detector. Both in vivo and in vitro experiments were performed to test the possibility of using such device for detecting the status of implants. The natural frequency increasing ratio (NFIR), defined as the percentage changes between the measured NF value at each testing time-point and its initial testing value, was used as a parameter to assess implant stability. In in vitro tests, changes in stability of the root form of the dental implant were simulated by clamping the implant with a clamping stand. When the clamping torque was increased from 2 to 10 N-cm, the NFIRs obtained from the traditional hammer-impacting method and from the current designed device showed no significantly differences (p=0.053). When the implants placed in a dog’s mandible were measured using the NF device, there was a continuous increase in NFIR for the first 8 weeks. The mean NFIR value at the first week was 0.13±0.048; the NFIR significantly increased to 0.408±0.076 (p<0.05) by week 8. Thereafter, the measurements maintained at a plateau. When comparing the NFIR curve obtained from in vivo tests to the histological images, a strong correlation between the two data sets was found. In conclusion, the idea of using the present NF device for detecting the degree of bone healing during the osseointegration process seems feasible. |
本系統中英文摘要資訊取自各篇刊載內容。