Influence of platform switching on crestal bone changes at non-submerged titanium implants: a histomorphometrical study in dogs
Influence of platform switching on crestal bone changes at non-submerged titanium implants: a histomorphometrical study in dogs
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DOI：
10.1111/j.1600-051x.2007.01155.x
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发表时间：
2007-12-01
影响因子：
6.7
通讯作者：
Schwarz, Frank
中科院分区：
文献类型：
--
作者：
Becker, Juergen;Ferrari, Daniel;Schwarz, Frank
目的：本研究的目的是调查组织形态计量学的影响平台切换对嵴骨的变化，在非淹没宽体钛种植体在狗model.Material和方法：一个阶段插入喷砂和酸蚀刻螺钉型种植体与匹配（CAM）或较小直径愈合基台（CPS）被随机分配到9只比格犬的下颌。在非浸没愈合7、14和28天后处死动物。对解剖的组织块进行组织形态计量学分析。测量种植体肩（IS）和：-长结合上皮（aJE）的顶端延伸，-与种植体接触的骨的最冠状水平（CLB），和-牙槽骨嵴（BC）的水平。结果：在7，14，和28天，平均IS-aJE值在CPS种植体显著最低。然而，愈合28天后，两组均显示牙槽骨颊侧的平均IS-BC值显著增加。组间IS-CLB和IS-BC的差异并不显著。结论：在本研究的范围内，可以得出结论，CAM和CPS种植体愈合28天后显示嵴骨水平的变化。
Objectives: The aim of the present study was to investigate histomorphometrically the influence of platform switching on crestal bone changes at non-submerged wide-body titanium implants in a dog model.Material and Methods: One-stage insertion of sand-blasted and acid-etched screw-type implants with either matching (CAM) or smaller-diameter healing abutments (CPS) were randomly assigned to the lower jaws of nine beagle dogs. The animals were killed after 7, 14, and 28 days of non-submerged healing. Dissected blocks were processed for histomorphometrical analysis. Measurements were made between the implant shoulder (IS) and: -the apical extension of the long junctional epithelium (aJE), -the most coronal level of bone in contact with the implant (CLB), and -the level of the alveolar bone crest (BC).Results: At 7, 14, and 28 days, the mean IS -aJE values were significantly the lowest at CPS implants. However, after 28 days of healing, both groups revealed significantly increased mean IS-BC values at the buccal aspect of the alveolar bone. The difference in IS-CLB and IS-BC between groups was not significant.Conclusions: Within the limits of the present study, it was concluded that both CAM and CPS implants revealed crestal bone-level changes after 28 days of healing.