Stanley H R, Hall M B, Clark A E, King C J, Hench L L, Berte J J
Department of Oral Diagnostic Sciences, University of Florida, College of Dentistry, Gainesville 32610, USA.
Int J Oral Maxillofac Implants. 1997 Jan-Feb;12(1):95-105.
Bioglass cones acting as space fillers after removal of tooth roots delay the resorption of alveolar ridges. In 1987, 242 implants in 29 patients with a mean postimplantation interval of 19.9 months were reported by the authors. Bioglass cones had been fitted snugly at least 2 mm below the alveolar crest, and dentures were placed no sooner than 6 weeks following tooth removal; 2.9% had been lost and 3.7% developed dehiscences. The present report on 168 implants in 20 recalled patients (mean postimplantation interval of 63.2 months) revealed a loss of 14.3% of the implants and 7.7% of the implants requiring recontouring. Literature indicates highest survival rates for implants in the anterior mandible; however, the present data demonstrate a statistically significant retention rate in the anterior maxilla. With this high rate of Bioglass cone retention (85.7%) after 5 years, their placement into fresh sockets to maintain the alveolar ridge is recommended.
在牙根拔除后充当空间填充材料的生物玻璃圆锥体可延缓牙槽嵴的吸收。1987年，作者报告了29例患者中的242颗种植体，平均植入后间隔时间为19.9个月。生物玻璃圆锥体已紧密贴合在牙槽嵴下方至少2毫米处，拔牙后不早于6周佩戴假牙；2.9%的种植体丢失，3.7%出现裂开。本报告涉及20例召回患者中的168颗种植体（平均植入后间隔时间为63.2个月），结果显示14.3%的种植体丢失，7.7%的种植体需要重新塑形。文献表明下颌前部种植体的存活率最高；然而，目前的数据显示上颌前部的留存率具有统计学意义。鉴于5年后生物玻璃圆锥体的留存率很高（85.7%），建议将其植入新鲜牙槽窝以维持牙槽嵴。
