| 负荷汪颌肯氏Ⅱ类可摘义齿游离端基牙牙槽骨位移的全息干涉测量 |
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| 引用本文： | 李满园 肖茂春 等. 负荷汪颌肯氏Ⅱ类可摘义齿游离端基牙牙槽骨位移的全息干涉测量[J]. 华西口腔医学杂志, 2001, 19(2): 80-82 |
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| 作者姓名： | 李满园 肖茂春 等 |
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| 作者单位： | 李满园（610041 四川大学华西口腔医学院）;肖茂春（610041 四川大学华西口腔医学院）;黎红（610041 四川大学华西口腔医学院）;付强（610041 四川大学华西口腔医学院） |
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| 摘 要： | 目的：比较下颌肯氏Ⅱ类可摘局部义齿的不同卡环对基牙牙槽骨产生作用的差异。方法：在离体人下颌骨上，设计制作5种直接固位体的肯氏Ⅱ类可摘局部义齿，即RPA卡环、RPI卡环、改良RPI卡环、铸造三臂卡环、颊侧锻丝固位臂卡环，用全息干涉测量技术，比较5种固位体使基牙颊舌侧牙槽骨产生位移的情况。结果：近中He支托卡环产生的位移小于过错中He支托卡环，杆型卡环产生颊侧牙槽骨位移分布均匀，圆环形卡环引起的颊侧位移信中在根尖，结论：临床修复此类牙列缺损时应尽量使用近中He支托和杆型卡环。
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| 关 键 词： | 可摘局部义齿 游离端基牙 牙槽骨 全息干涉测量 |
Effects of Clasp Designsof Kennedy Class |
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| Li Manyuan. Effects of Clasp Designsof Kennedy Class[J]. West China journal of stomatology, 2001, 19(2): 80-82 |
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| Authors: | Li Manyuan |
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| Affiliation: | College of Stomatology, West China University of Medical Sciences. |
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| Abstract: | OBJECTIVE: This article is to investigate the effects of different clasp designs of Kennedy class II RPD on the displacement of alveolar bone around the abutment tooth. METHODS: This experiment was carried out by using a separate human mandible. Five clasp designs were examined in this experiment, including RPA, RPI, modified RPI (mRPI), three-arm clasps and buccal wrought wired three-arm clasps. Hologramatic measurement was applied to record the different effects of these five designs of clasps on buccal and lingual alveolar bone. RESULTS: The RPI clasp was found to cause the smallest bone displacement. Generally, the clasps with the mesial occlusal rest (RPA, RPI, mRPI) caused smaller bone displacements than those with distal occlusal rests. The bar clasps brought about evenly spread bony displacements, however, the circumferential clasp caused highly concentrated displacement around apical site of the abutment tooth. CONCLUSION: The results suggest that mesial occlusal rests and bar clasps are preferable designs in this kind of prostheses. |
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| Keywords: | removable partial denture distal-extension abutment tooth alveolar bone hologramatic measurement |
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