两种种植系统后牙区单牙修复后边缘骨吸收与冠根比的临床研究

Two kinds of Single Tooth Implant System Posterior Area after Repair of Marginal Bone Resorption and Crown Root Ratio of Clinical Research

目的:比较straumann和Anthogyr两种不同种植系统用于修复下颌后牙单颗牙缺失的种植体周围边缘骨吸收量的差别。方法:临床选择178例单牙缺失患者,其中76例植入ITI种植体系统行非潜入式种植手术,102例植入Anthogyr种植体系统行潜入式种植手术。在冠修复当天及修复后第6、12、24、36个月后分别进行全景片检查,测量种植体边缘牙槽骨高度,计算牙槽骨丧失量,用SPSS 17.0软件进行统计分析。结果:178例患者的平均年龄(43.26±10.23)岁,种植体平均长度9.2mm,随访时间36个月。骨吸收量:两组植体植入后3年的种植体周围骨组织骨吸收量呈不断增长趋势,不同种植体的增长幅度不同;ITI种植体组边缘骨吸收量在冠修复当天,修复后6个月均明显大于Anthogyr(安多健)种植体组(P<0.05);Anthogyr(安多健)种植体组边缘骨吸收量在修复后12个月时骨吸收量大于ITI种植体组(P<0.05),在修复后24、36个月时,两者无明显差异。两种种植系统3年累计存留率分别为98.65%和95.8%,差异无统计学意义(P>0.05)。结论:CRR在两个系统之间差异不显著,冠根比CRR≤1和1<CRR<2种植单冠修复体的短期临床效果均较好。两种牙体种植系统对种植体周围骨组织吸收的影响不同,但都有较好的临床疗效。

Objective To compare the marginal bone resorption of two implant systems which wereapplied to the restoration of single tooth missingsin posterior region.Methods Clinical selection of178cases of single tooth loss patients in which76cases were implanted with ITI implant system and non submerged implant surgery,102cases were implanted into the Anthogyr implant system with submerged implant surgery.After the crown restoration in6,12,24months and36months,the height of alveolar bone was measured and the amount of alveolar bone loss was calculated.The statistical analysis was performed with SPSS17software.Results The average age of the178patients was43.26+10.23years old,the average length of the implant was9.2mm,and the follow-up time was36months.Bone absorption:two groups in three years after the implantationof bone tissue around the implant bone absorption amount is increasing,the growth rate of different planting;ITI implant group marginal bone resorption in the crown on the same day,6months after the repair were significantly higher than that in Anthogyr implant group(P<0.05);Anthogyr implant marginal bone resorption in repair group12months after the implant bone absorption amount is greater than ITI group(P<0.05),in repair after24and36months,no significant difference between the two.The cumulative survival rates of the two planting systems were98.6%and95.8%,respectively,and the difference was not statistically significant(P>0.05).Conclusions There is no significant difference between the two systems in CRR,and the short-term clinical effect of crown root ratio CRR≤1and1<CRR<2implant crown are good.Two dental implant systems have different effects on the absorption of bone tissue around implants,but they have a good clinical effect.