Ridge dimensional change at implant sites and implant adjacent teeth after early implant placement with contour augmentation: A retrospective clinical study.

Jing-Rong Lin, Yu-Jui Hsu, Lian-Ping Mau, Chung-Han Ho, Hsi-Chien Yu
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Abstract

Implant placement is often combined with contour augmentation surgery, involving flap elevation and material placement extending to the ridges of adjacent teeth. This study evaluated horizontal ridge dimensional changes and the stability of the implant site and adjacent teeth in the esthetic zone following early implant placement with contour augmentation. Twenty-one patients received maxillary incisor single implant placement with contour augmentation. Alginate impressions were taken before tooth extraction (T0) and at 1-year follow-up (T1), and stone casts were scanned using a desktop 3D scanner to generate stereolithography (STL) files. Horizontal ridge dimensions were measured at 0, 1, 3, and 5 mm below the mucosal margin at the groups of implant site (I), mesial tooth (MI), distal tooth (DI), and contralateral canine (C). Results indicated significant differences in ridge dimensions between T0 and T1 at the 3-mm and 5-mm levels in Group MI (P < 0.05). No significant differences were observed among the four groups at any level. Early implant placement with contour augmentation appeared to maintain the facial-palatal ridge dimension close to pre-extraction width, suggesting acceptable hard and soft tissue stability in the esthetic zone after 1 year, with no consistent adverse effects on ridges of adjacent teeth.

早期种植体种植后牙槽位及邻近牙槽位牙槽位的变化:一项回顾性临床研究。
种植体放置通常与轮廓增强手术相结合,包括皮瓣提升和材料放置延伸到邻近牙齿的脊。本研究评估了早期种植体种植后水平牙脊尺寸的变化以及种植体部位和美观区相邻牙齿的稳定性。21例患者行上颌切牙单种植体置入加轮廓隆胸术。在拔牙前(T0)和1年随访时(T1)取海藻酸盐印模,并使用桌面3D扫描仪扫描石铸件以生成立体光刻(STL)文件。在种植体部位(I)、近中牙(MI)、远端牙(DI)和对侧犬齿(C)组的粘膜缘以下0,1,3和5mm处测量水平脊尺寸。结果显示,T0组与T1组在3 mm和5 mm水平的脊尺寸差异有统计学意义(P < 0.05)。四组之间在任何水平上均无显著差异。早期种植体与轮廓增加似乎保持面腭脊尺寸接近拔牙前的宽度,表明1年后美学区软硬组织的稳定性可以接受,对邻近牙齿的脊没有一致的不利影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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