不同骨缺损情况下牙槽嵴保存术对延期种植的影响

发布时间：2018-10-14 11:56

【摘要】：目的:评估不同骨缺损情况下牙槽嵴保存术对延期种植的影响。方法:纳入需拔除下颌单个后牙的患者60例,根据临床和螺旋CT检查将牙槽嵴骨缺损量3~5 mm者纳入A组,5 mm者纳入B组。拔牙后再将A、B两大组各随机分为试验组和对照组。试验组牙槽窝使用Bio-Oss骨粉植骨并覆盖Bio-Gide生物膜,对照组牙槽窝不作任何处理,使其自然愈合。术后6个月用牙周探针检查缺牙区邻牙的牙周袋探诊深度(PPD)、牙龈退缩水平(GRL)、临床牙龈附着水平(CAL)各指标,用螺旋CT检测牙槽嵴的骨量变化,植入种植体。术后随访1年,评估种植体稳定性和骨结合情况。结果:术后6个月,A、B两组中试验组和对照组所有患牙邻牙的PPD、GRL、CAL与术前相比均无统计学差异(P0.05)。A、B两组中对照组的牙槽嵴骨吸收量均大于相应的试验组(P0.05)。种植体植入后3个月内,A组和B组种植体稳定性各组间相比无统计学差异(P0.05);1年内种植体周围骨吸收量各组间相比亦无统计学差异(P0.05)。结论:牙槽嵴骨缺损5 mm时,牙槽嵴保存术可明显提高牙槽嵴骨量,并为延期种植提供良好的条件。
[Abstract]:Objective: to evaluate the effect of alveolar ridge preservation on delayed implantation in different bone defects. Methods: 60 cases of mandibular single posterior teeth were extracted. According to clinical and spiral CT examination, the patients with alveolar crest defect of 3 to 5 mm were included in group A and group B with 5 mm. After extraction, the two groups were randomly divided into two groups: experimental group and control group. Bio-Oss bone powder was used to graft bone and cover Bio-Gide biofilm in the alveolar fossa of the experimental group, while the alveolar fossa of the control group healed naturally without any treatment. Six months after operation, periodontal probe was used to examine the probing depth of the periodontal bag in the missing region. (PPD), gingival retraction level (GRL),) clinical gingival attachment level (CAL) was examined. The bone mass of alveolar ridge was detected by spiral CT and implants were implanted. All patients were followed up for 1 year to evaluate implant stability and bone bonding. Results: there was no significant difference in PPD,GRL,CAL between the experimental group and the control group 6 months after operation (P0.05). The alveolar bone resorption in the control group was higher than that in the control group (P0.05). Within 3 months after implant implantation, there was no significant difference in implant stability between group A and group B (P0.05), and there was no significant difference in bone resorption between each group within one year (P0.05). Conclusion: at 5 mm of alveolar ridge defect, alveolar ridge preservation can significantly increase the alveolar ridge bone mass and provide a good condition for delayed implantation.
【作者单位】：第四军医大学口腔医院口腔颌面外科军事口腔医学国家重点实验室;
【分类号】：R783.6

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