牙周组织与钛微种植体界面的超微结构。
Ultrastructure of the interface between periodontal tissues and titanium mini-implants.
机构信息
University of São Paulo, Brazil.
出版信息
Angle Orthod. 2010 May;80(3):459-65. doi: 10.2319/032509-177.1.
OBJECTIVE
To describe the ultrastructure of the interface between periodontal tissues and titanium mini-implants in rat mandibles.
MATERIALS AND METHODS
A titanium mini-implant was placed between the buccal roots of the mandibular first molar of 24 adult rats. After 21, 30, 45, 60, 90, and 120 days of implantation, the mandibular portion was removed and fixed in cacodylate-buffered 2% glutaraldehyde + 2.5% formaldehyde. The material was decalcified and processed for scanning and transmission electron microscopy.
RESULTS
Ultrastructural analysis revealed a thin cementum-like layer at longer times after implantation at the areas in which the periodontal ligament was in contact with the implant.
CONCLUSIONS
The alveolar bone and the periodontal ligament reorganized their constituents around the implant, and a thin cementum-like layer was formed at longer times after implantation at the areas in which the periodontal ligament was in contact with the implant.
目的
描述大鼠下颌骨牙周组织与钛迷你种植体界面的超微结构。
材料与方法
将钛迷你种植体置于 24 只成年大鼠下颌第一磨牙颊根之间。植入后 21、30、45、60、90 和 120 天，取出下颌部分，用戊二醛 + 2.5%甲醛固定于 cacodylate 缓冲液中。对材料进行脱钙、扫描和透射电镜处理。
结果
超微结构分析显示，在植入后较长时间，牙周韧带与种植体接触的区域出现了一层薄的类牙骨质层。
结论
牙槽骨和牙周韧带围绕种植体重新组成其成分，在植入后较长时间，牙周韧带与种植体接触的区域形成了一层薄的类牙骨质层。
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