Int J Periodontics Restorative Dent. 2022 May-Jun;42(3):e75-e83. doi: 10.11607/prd.5528.
In this prospective pilot study on ridge preservation (RP), a collagen sponge was placed to fill the bottom half of the socket, followed by a sequence of bone graft, collagen membrane, and a sponge placed on top. Twelve patients with 13 hopeless posterior teeth were included. Changes in bone dimension (including variations of horizontal ridge width [HRW] and bone height [BH]) between the time immediately postextraction (T) and 6 months later (T) were evaluated through CBCT. The soft tissue was assessed using a wound healing index (WHI) at 2 weeks (T), 2 months (T), and 6 months (T) postsurgery. Measured at three parallel levels (1, 3, and 5 mm apical to the crest of the palatal plate), the mean HRW changes (T to T) ranged from 0.47 to 1.05 mm. Statistically significant negative correlations were observed between WHI (T) and midcrestal BH change. This proposed RP technique showed favorable outcomes regarding HRW and BH, even in periodontally compromised dehiscence sockets.
在这项关于牙槽嵴保存（RP）的前瞻性初步研究中，将胶原海绵置于牙槽窝的下半部分以填充，然后进行一系列骨移植、胶原膜以及将海绵置于顶部。共纳入 12 名患者的 13 颗后牙。通过 CBCT 评估即刻拔牙后（T）和 6 个月后（T）的骨尺寸变化（包括水平牙槽嵴宽度 [HRW] 和骨高度 [BH] 的变化）。在术后 2 周（T）、2 个月（T）和 6 个月（T）时使用伤口愈合指数（WHI）评估软组织。在距腭板牙槽嵴顶 1、3 和 5 毫米处的三个平行水平上测量，HRW 变化的平均值（T 到 T）为 0.47 至 1.05 毫米。WHI（T）与中嵴骨高度变化之间存在显著的负相关。这项提出的 RP 技术在 HRW 和 BH 方面显示出良好的结果，即使在牙周缺陷的切开式牙槽窝中也是如此。
