BEGO短种植体在骨量不足后牙区种植修复的应用研究

目的评价BEGO短种植体在骨量不足后牙区种植修复的应用效果。方法选取因后牙缺失采用BEGO系统种植修复的患者60例,随机分为对照组和实验组,每组30例。实验组采用短种植体,对照组采用常规种植体。Ⅰ期手术全部采用埋入式种植,3~6个月行Ⅱ期手术,2~3周内完成永久固定修复。对比两组种植体冠-种植体高度比(C/I)、12~18个月后种植体存留率、X线检查边缘骨吸收、患者满意度。结果实验组患者植入42枚种植体,Ⅱ期手术时均获得骨结合。Ⅱ期修复后,上磨牙区一枚植体负重1个月时松动取出,其余经12~18个月随访观察,X线片检测种植体周骨组织稳定,骨吸收为(0.54±0.36)mm,C/I为(1.14±0.51),种植成功率为97.62%,患者满意度评分为0.9分。对照组患者植入48枚种植体,Ⅱ期手术时均获得骨结合。Ⅱ期修复后,上磨牙区一枚植体负重2个月时松动取出,其余经12~18个月随访观察,X线片检测种植体周骨组织稳定,骨吸收为(0.58±0.38)mm,C/I为(1.02±0.42),种植成功率为97.92%,患者满意度评分为1.0分。两组种植体存留率比较差异无统计学意义(P>0.05)。两组边缘骨吸收水平比较差异无统计学意义(P>0.05)。两组患者满意度评分比较差异无统计学意义(P>0.05)。结论在骨量不足后牙区,通过植入BEGO系统短种植体,可以避开复杂手术,降低风险,缩短修复所需时间,并有较高的成功率,值得在临床应用推广。

Clinical study of BEGO short implants placed in posterior region with constrained bone for implant restoration

Objective To evaluate the application effect of BEGO short implants placed in posterior region with constrained bone for implant restoration.Methods A total of 60 patients who were implanted and repaired with BEGO system due to missing posterior teeth were randomly divided into control group and experimental group,with 30 cases in each group.The experimental group received short implants,and the control group received conventional implants.All patients received submerged dental implants at stageⅠoperation.StageⅡoperation was performed in 3-6 months,and the permanent fixation was completed in 2-3 weeks.The crown-implant ratio(C/I),implant retention rate after 12-18 months,X-ray marginal bone absorption and patient satisfaction were compared between the two groups.Results Patients in the experimental group were implanted with 42 implants,and osseointegration was obtained during stageⅡoperation.After the stageⅡrestoration,one implant in the upper molar area was loosened and taken out when it was loaded for 1 month.The rest were followed up for 12-18 months.X-ray showed that the bone tissue around the implant was stable,the bone absorption was(0.54±0.36)mm,the C/I was(1.14±0.51),the implant success rate was 97.62%,and the patient satisfaction score was 0.9 points.Patients in the control group were implanted with 48 implants,and osseointegration was obtained during stageⅡoperation.After the stageⅡrestoration,one implant in the upper molar area was loosened and taken out when it was loaded for 2 months.The rest were followed up for 12-18 months.X-ray showed that the bone tissue around the implant was stable,the bone absorption was(0.58±0.38)mm,the C/I was(1.02±0.42),the implant success rate was 97.92%,and the patient satisfaction score was 1.0 poin.There was no statistically significant difference in implant retention rate between the two groups(P>0.05).There was no statistically significant difference in marginal bone absorption level between the two groups(P>0.05).There was no statistically significant in satisfaction score between the two groups(P>0.05).Conclusion Implanting BEGO short implants in posterior region with constrained bone can avoid complex surgery,reduce risk,shorten time required for repair and the success rate is high.It is worthy of clinical promotion and application.