Department of Periodontology, School of Dentistry, Periodontal-Implant Clinical Research Institute, Kyung Hee University, Seoul, South Korea.
Department of Periodontology, Dankook University College of Dentistry, Cheonan-si, South Korea.
J Clin Periodontol. 2019 Nov;46(11):1144-1154. doi: 10.1111/jcpe.13184. Epub 2019 Sep 9.
To determine the effect of alveolar ridge preservation (ARP) in molar sites without primary flap closure.
Three groups were established: extraction sockets grafted with deproteinized bovine bone mineral containing 10% collagen (DBBM-C) and covered by a native bilayer collagen membrane (NBCM) (test group 1), sockets grafted with DBBM-C only (test group 2), and sockets that healed naturally (control group). Primary flap closure was not attempted. Conebeam computed tomography scans were obtained immediately and then 4 months after ARP. A biopsy was performed. The change of the marginal bone level was measured.
There was significantly less horizontal resorption in test group 1 than in the control group at levels 1 mm (-1.02 ± 0.88 [mean ± SD] vs. -4.44 ± 3.71 mm) and 3 mm (-0.31 ± 1.51 vs. -2.27 ± 1.15 mm) below the crest, and significantly less vertical reduction in the midcrestal area in test group 1 than in test group 2 (-0.25 ± 0.95 vs. -1.15 ± 1.63 mm) (p < .05). There were no significant differences between test groups in clinical and histomorphometric measurements. All groups exhibited stable marginal bone levels after 1 year of loading.
Alveolar ridge preservation without primary flap closure in molar areas was effective in minimizing ridge resorption and facilitated implant treatment.
确定不进行原发性皮瓣关闭的磨牙区牙槽嵴保存（ARP）的效果。
建立了三组：用含 10%胶原的脱蛋白牛骨矿物质（DBBM-C）和天然双层胶原膜（NBCM）覆盖的拔牙窝（实验组 1）、仅用 DBBM-C 移植的拔牙窝（实验组 2）和自然愈合的拔牙窝（对照组）。不尝试进行原发性皮瓣关闭。ARP 后即刻和 4 个月时进行锥形束 CT 扫描。进行活检。测量边缘骨水平的变化。
在 1mm （-1.02 ± 0.88 [平均值 ± 标准差] 与 -4.44 ± 3.71mm）和 3mm （-0.31 ± 1.51 与 -2.27 ± 1.15mm）牙槽嵴以下水平，实验组 1 的水平吸收明显少于对照组，在中嵴区域的垂直减少量也明显少于实验组 2（-0.25 ± 0.95 与 -1.15 ± 1.63mm）（p < 0.05）。在临床和组织形态计量学测量方面，实验组之间没有差异。所有组在 1 年负荷后均显示稳定的边缘骨水平。
磨牙区不进行原发性皮瓣关闭的牙槽嵴保存可有效减少牙槽嵴吸收，并有利于种植治疗。
