即刻负载与延期负载的骨结合是否一样? 比较3个月愈合期种植体稳定性的前瞻性研究

The osseointegration of immediately and delayed loaded implants is same? Compared the implant stability during a 3-month healing period prospective study

目的:使用OSSTELL共振频率测量ITISLA种植体3个月愈合期的稳定性变化,研究影响愈合期种植体稳定性的相关因素;方法:将59名患者按照种植后的修复方式,分为即刻负载(12名患者,25枚种植体)和延期负载(49名患者,79枚种植体)两组,从种植体植入到愈合3个月使用共振频率OSSTELL每周测量记录其稳定系数(ISQ),统计分析即刻负载和延期负载稳定性的区别。结果:25枚即刻负载种植体中,有1枚松动拔除;79枚延期负载种植体没有松动。即刻负载和延期负载之间的稳定性具有明显差异(P<0.05),延期负载的种植体从植入到3个月的稳定系数为:72.88±5.39;即刻负载为:75.86±3.60。延期负载的最低稳定系数出现在第4周(71.58±5.11),即刻负载的最底稳定系数出现在第2周(71.33±2.97)。两个实验组中,I类、II类骨质的稳定性均要高于III类骨质(P<0.05)。结论:本研究的结果说明在即刻负载和延期负载的稳定性具有明显的差异,这是否也预示着两种负载方式的骨结合也同样不同值得进一步研究。

Objectives:The objectives of the present study were(1)to compare the stability of delayed loaded(DL)and immediately loaded(IL)ITI SLA implants during the first 3 months of the healing period using resonance frequency analysis(RFA)and(2)to determine the factors that affect implant stability during the healing period.Materials and Methods:To compare implant stability,resonance frequency analysis(RFA)was performed on two groups of patients(12 patients received 25 IL implants and 47 patients received 79 DL implants)with a total 104 ITI SLA implants.Implant stability was measured directly by RFA at implant placement and consecutively once a week for 12 weeks.Statistical analyses were carried out to study implant stability differences between IL and DL groups.Results:One of the 25 implants in the IL group failed,and no implant was lost in the DL group.Implant stability between the IL and DL groups demonstrated a statistically significant difference(P<0.05).The mean ISQ of all measured implants from implant insertion to 12 weeks was 72.88 ±5.39 for the DL and 75.86±3.60 for the IL types.The lowest stability was at 4 weeks for DL implants(mean:71.58±5.11)and 2 weeks for IL implants(mean:71.33±2.97).In both groups,bone types I and II showed higher implant stability than bone type III(P<0.05).Conclusions:The findings of this study indicate that differences in osseointegration between IL and DL implants may be predicted according to differential implant stability.