Private Practice, Fürth, Germany.
Division of Periodontology, University of Würzburg, Würzburg, Germany.
Clin Oral Investig. 2021 Feb;25(2):515-523. doi: 10.1007/s00784-020-03416-z. Epub 2020 Jun 26.
The study aimed to evaluate the effect of internal silver coating as a countermeasure to crestal bone loss around implants with or without multiple abutment disconnections/reconnections.
Following tooth extraction, 48 implants with connected healing abutments (24 implants internally coated with elemental silver) were placed in the mandible of eight beagle dogs. Two months after implant surgery one side of the mandible was randomly assigned to four abutment manipulations (disconnection/reconnection) on a weekly basis. At 4 months postoperative, biopsies were obtained and prepared for histomorphometric analysis.
Healing abutment manipulation increased crestal bone remodeling when compared to no abutment manipulation (1.28 mm versus 0.92 mm, respectively), although the difference was not statistically significant (p = 0.0836). Overall, an internal silver coating did not provide a statistically sufficient implant treatment characteristic as a countermeasure to crestal bone loss (p = 0.7801).
These findings indicate that the controlled variables explored here (abutment manipulation/internal silver coating) have a limited effect on initial crestal bone loss.
Abutment manipulation during prosthetic work does not seem to harm the peri-implant soft and hard tissues.
本研究旨在评估内表面镀银作为一种预防措施，对存在或不存在多个基台连接/断开情况下种植体周围嵴顶骨丧失的效果。
在拔牙后，将 48 枚带有愈合基台的种植体（24 枚种植体内部镀有元素银）植入 8 只比格犬的下颌骨。种植体手术后 2 个月，随机将下颌骨一侧每周进行 4 次基台操作（连接/断开）。术后 4 个月时，获取活检标本并进行组织形态计量学分析。
与未进行基台操作相比，愈合基台操作增加了嵴顶骨改建（分别为 1.28mm 和 0.92mm），但差异无统计学意义（p=0.0836）。总体而言，内表面镀银并不能作为预防种植体周围嵴顶骨丧失的有效措施（p=0.7801）。
这些发现表明，本研究中探索的控制变量（基台操作/内表面镀银）对初始嵴顶骨丧失的影响有限。
在修复过程中进行基台操作似乎不会损害种植体周围的软硬组织。
