Department of Periodontology and Oral Surgery, Faculty of Medicine, University of Liege, Liège, Belgium.
Dental Biomaterials Research Unit, University of Liège, Liège, Belgium.
Clin Implant Dent Relat Res. 2020 Jun;22(3):387-396. doi: 10.1111/cid.12899. Epub 2020 Apr 23.
Although alveolar ridge preservation (ARP) procedures appear to limit bone resorption after dental extraction, long-term outcomes remain limited. The objective of this prospective case series was to evaluate the long-term hard and soft tissue changes after ARP procedure in the aesthetic area, using deproteinized bovine bone mineral (DBBM) and saddle connective tissue graft.
Fifteen patients were subjected to ARP and impressions and CT scans were taken at baseline and 3 months. After 5 to 7 years, a secondary long-term clinical and radiological analysis was carried out. Horizontal alveolar bone changes, soft tissue profiles and implant outcomes were assessed.
Although a limited hard and soft tissue remodeling occurred during the first 3 months after ARP, from 3 months to the long-term evaluation, the alveolar bone dimensions remained stable and the soft tissue profiles significantly increased, in the more cervical levels. The implant survival rate after 5 to 7 years yielded 100% and peri-implant bone levels and soft tissue health were good.
Within the limits of the study, the present data confirms the long-term effectiveness of ARP using DBBM and a saddle connective tissue graft offering stable hard and soft tissue conditions up to 5 to 7 years.
尽管牙槽嵴保存（ARP）程序似乎可以限制拔牙后骨吸收，但长期结果仍有限。本前瞻性病例系列研究的目的是使用脱蛋白牛骨矿物质（DBBM）和鞍状结缔组织移植物评估 ARP 手术后在美学区域的长期硬组织和软组织变化。
15 名患者接受了 ARP，在基线和 3 个月时进行了印模和 CT 扫描。5 至 7 年后，进行了二次长期临床和放射学分析。评估了水平牙槽骨变化、软组织轮廓和种植体结果。
尽管 ARP 后前 3 个月发生了有限的硬组织和软组织重塑，但从 3 个月到长期评估，牙槽骨尺寸保持稳定，软组织轮廓在更颈侧水平显著增加。5 至 7 年后的种植体存活率为 100%，种植体周围骨水平和软组织健康状况良好。
在研究范围内，本数据证实了使用 DBBM 和鞍状结缔组织移植物进行 ARP 的长期有效性，可提供稳定的硬组织和软组织条件，长达 5 至 7 年。
