Retrospective Evaluation of Crestal Bone Changes Around Implants With Reduced Abutment Diameter Placed Non-Submerged and at Subcrestal Positions: The Effect of Bone Grafting at Implant Placement
Retrospective Evaluation of Crestal Bone Changes Around Implants With Reduced Abutment Diameter Placed Non-Submerged and at Subcrestal Positions: The Effect of Bone Grafting at Implant Placement
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DOI：
10.1902/jop.2010.100340
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发表时间：
2011-02-01
影响因子：
4.3
通讯作者：
Lundgren, Tord
中科院分区：
文献类型：
--
作者：
Koutouzis, Theofilos;Fetner, Michael;Lundgren, Tord
背景：关于牙槽嵴下种植体植入后截骨移植效果的信息有限。本研究的主要目的是回顾性评估骨嵴和冠状面之间缺损的骨移植效果，这些种植体具有减小的基台直径，放置在非淹没和牙槽嵴下位置。 方法：回顾了 50 名连续接受异种移植牙槽嵴下种植牙种植体治疗的患者（A 组）和 50 名连续接受牙槽嵴下种植牙种植体但没有任何移植材料的患者（B 组）的记录。对于每个种植体，将放置后的 X 光照片与上次随访的图像进行比较，并评估以下方面：1) 种植体牙槽嵴下定位的程度，2) 边缘硬组织高度随时间的变化，以及 3) 随访时是否可以在种植体平台上检测到边缘硬组织。结果：A 组硬组织的平均边缘损失为 0.11 +/- 0.30 毫米，A 组为 0.08 +/- 0.08 +/- B 组为 0.22 毫米。A 组中 69% 的种植体和 B 组中 77% 的种植体在种植体平台上显示出硬组织。各组之间在边缘笔种植体硬组织损失方面没有统计学上的显着差异。结论：本研究未能证明移植骨嵴和种植体冠状面之间剩余的骨伤口缺损对边缘笔种植体硬组织变化有积极影响。牙周病杂志 2011；82：234-242。
Background: There is limited information regarding the effect of grafting of the osteotomy after subcrestal implant placement. The primary aim of this study is to retrospectively evaluate the effect of bone grafting of the defect between the bone crest and the coronal aspect of implants with reduced abutment diameter placed non-submerged and at subcrestal positions.Methods: Records of 50 consecutive patients treated with subcrestally placed dental implants grafted with a xenograft (Group A) and 50 consecutive patients with subcrestally placed dental implants without any grafting material (Group B) were reviewed. For each implant, the radiographs after placement were compared to images from the last follow-up visit and evaluated regarding the following: 1) degree of subcrestal positioning of the implant, 2) changes of marginal hard-tissue height over time, and 3) whether marginal hard-tissue could be detected on the implant platform at the follow-up visit.Results: The mean marginal loss of hard tissues was 0.11 +/- 0.30 mm for Group A and 0.08 +/- 0.22 mm for Group B. Sixty-nine percent of the implants in Group A and 77% of the implants in Group B demonstrated hard tissue on the implant platform. There were no statistically significant differences between the groups regarding marginal pen-implant hard-tissue loss.Conclusion: The present study fails to demonstrate that grafting of the remaining osseous wound defect between the bone crest and the coronal aspect of the implant has a positive effect on marginal pen-implant hard-tissue changes. J Periodontol 2011;82:234-242.