| 犬拔牙创愈合对相邻微种植体最大拉拔力值的影响 |
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| 引用本文： | 郑雷蕾,胡赟,宋锦璘,邓锋,赵志河,唐甜,王智强. 犬拔牙创愈合对相邻微种植体最大拉拔力值的影响[J]. 第三军医大学学报, 2011, 33(11) |
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| 作者姓名： | 郑雷蕾 胡赟 宋锦璘 邓锋 赵志河 唐甜 王智强 |
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| 作者单位： | 郑雷蕾,宋锦璘,邓锋,Zheng Leilei,Song Jinlin,Deng Feng(重庆医科大学附属口腔医院,正畸科,重庆,400015);胡赟,Hu Yun(重庆医科大学附属口腔医院,预防科,重庆,400015);赵志河,唐甜,Zhao Zhihe,Tang Tian(四川大学华西口腔医院正畸科,成都,610041);王智强,Wang Zhiqiang(山东大学附属省立医院口腔正畸科,济南,250021) |
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| 基金项目： | 国家自然科学基金青年基金，教育部"高等学校博士学科点专项科研基金"新教师类基金，重庆市医学重点学科项目资助 |
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| 摘 要： | 目的 探讨拔牙创骨质结构改建对相邻微种植体作为正畸支抗的稳定性的影响,为微种植体的临床运用提供依据.方法 8只雄性Beagle犬按不同愈合时间段(1、3、8、12周)随机分成4组,每只Beagle犬拔除第3和第4双尖牙(P3,P4),实验微种植体邻近拔牙区域,对照微种植体位于第2双尖牙(P2)和第1磨牙(M1)区域,共植入微种植体128枚.选择96个微种植体组织块,通过拉拔试验测定微种植体的最大拉拔力值(pull-out force,POF)并将结果 进行统计学分析.结果 实验组和对照组POF值在第1周内没有表现显著性差异(P>0.05),在第3周对照组POF显著高于实验组(P<0.05).两组POF高峰值均出现在第8周组.在前8周里,实验组和对照组的POF均随着时间得延长而增加,到第12周出现回落.实验组POF在各时间段均存在显著性差异(P<0.05).而对照组仅第12周与第3、8周POF值表现显著性差异.结论 邻近拔牙创植入的微种植体在无载荷愈合期可以保持稳定性.但拔牙创的早期愈合可能会加重微种植体-骨界面的炎症反应和骨吸收效应,即刻加载风险较大.
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| 关 键 词： | 支抗 拔牙创 微种植体 骨改建 最大拉拔力值 |
Effect of wound healing after tooth extraction on maximal pull-out force of adjacent micro-screws |
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| Zheng Leilei,Hu Yun,Song Jinlin,Deng Feng,Zhao Zhihe,Tang Tian,Wang Zhiqiang. Effect of wound healing after tooth extraction on maximal pull-out force of adjacent micro-screws[J]. Acta Academiae Medicinae Militaris Tertiae, 2011, 33(11) |
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| Authors: | Zheng Leilei Hu Yun Song Jinlin Deng Feng Zhao Zhihe Tang Tian Wang Zhiqiang |
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| Affiliation: | Zheng Leilei1,Hu Yun2,Song Jinlin1,Deng Feng1,Zhao Zhihe3,Tang Tian3,Wang Zhiqiang4(1Department of Orthodontics,2Department of Preventive Dentistry,Affiliated Stomatology Hospital,Chongqing Medical University,Chongqing,400015,3Department of Orthodontics,West China Hospital of Stomatology,Chengdu,Sichuan University,610041,4Department of Orthodontics,Affiliated Shandong Provincial Hospital,Shandong University,Shandong Province,Jinan,250021,China) |
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| Abstract: | Objective To provide the evidence for the clinical application of micro-screws by studying the effect of bone structure reconstruction after tooth extraction on the stability of its adjacent micro-screws as an implanted anchorage.Methods Eight male Beagle dogs were randomly divided into 4 groups according to the different healing periods of time(1,3,8,and 12 weeks)after tooth extraction.The third and fourth canine teeth(P3 and P4) were extracted from each dog.A total of 128 micro-screws were implanted into ... |
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| Keywords: | anchorage extraction microscrew bone remodeling pull-out force |
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