平台转换连接种植体与对接连接种植体修复牙列缺损的前瞻性比较研究  

Controlled prospective clinical study of dental implant restoration with platform-switched implants and butt-joint implants

作　　者：李倩[1] 林野[1] 邱立新[1] 李健慧[1] 邸萍[1] 陈波[1] 胡秀莲[1] 张宇[1] 王莺[1] 崔宏燕[1] 王涛[1] 于海燕[1] 

机构地区：[1]北京大学口腔医院种植科

出　　处：《中国口腔种植学杂志》2009年第2期45-46,共2页Chinese Journal of Oral Implantology

摘　　要：目的:评估平台转换连接种植体和对接连接种植体种植修复的近期临床效果和种植体周围软硬组织的变化。材料和方法:2007年4月至2007年9月北京大学口腔医院种植中心就诊的双侧后牙区牙列缺损患者25例,患者双侧同名牙位上分别种植平台转换连接种植体(Ankylos种植体)和对接连接种植体(NobelSpeedy种植体),共31对种植体作为研究对象进行配对比较研究。种植体负载3、6和12个月时复诊,临床检查包括有无并发症,mPI、mBI和PD。在种植体植入术后即刻、修复完成即刻、负载3、6和12个月时行X线检查,测量种植体边缘骨水平、计算边缘骨丧失量。比较同一患者口内平台转换连接种植体和对接连接种植体临床检查和X线检查结果。另以接受对接连接种植体植入的12例患者功能负重时间达2年的30枚种植体为对照组,与试验组中对接连接种植体负载1年时的X线检查结果进行比较。在SPSS14.0软件平台上应用配对t检验、方差分析、Wilcoxon符号秩检验、Mann-Whitney检验进行统计分析。结果:至功能负载12个月复查时,全部25例患者的31枚平台转换连接种植体和31枚对接连接种植体未发现严重并发症。应用平台转换技术和对接连接种植体功能负载12个月时种植体PD为2.2±0.4mm和2.6±0.4mm,P<0.05。两种种植体功能负载12个月内mPI和mBI无显著性差异。至功能负载12个月复查时,全部种植体骨结合良好,种植体周围未见透射影。平台转换连接种植体负载前、功能负载3、6个月和12个月时种植体边缘骨吸收分别为0.51±0.43mm,0.07±0.06mm,-0.03±0.29mm和-0.12±0.31mm,对接连接种植体边缘骨吸收为1.26±0.46mm,0.27±0.13mm,0.42±0.26mm和0.50±0.29mm,P<0.05。平台转换连接种植体功能负载12个月时边缘骨水平接近种植体平台(-0.15±0.58mm),对接连接种植体边缘骨水平低于种植体平台(1.89±0.32mm),P<0.01。两种种植体负载前边缘骨吸�Objective:To evaluate and compare the clinical and radiographic outcomes of dental implant restoration with platform-switched implants and butt-joint implants.Materials and Methods:The study included 25 patients with bilateral edentulous posterior ridges treated from April to September 2007(Department of implant dentistry,Peking university school and hospital of Stomatology).31 pairs of implants were placed in symmetric position.Each pair contains a platform-switched implant(Ankylos)on one site and a butt-joint implant(NobelSpeedy)on the opposite site.The clinical parameters including modified sulcus bleeding index(mBI),modified plaque index(mPI)and probing depth(PD)were measured after 3,6 and 12 months of functional loading.Standardized periapical radiograph or panoramic radiograph was taken at the following time:immediately after implant placement and restoration,3,6 and 12 months after functional loading.Marginal bone level and marginal bone loss was measured.30 butt-joint implants from 12 individuals served as control for 2 years functional loading.Marginal bone level and bone loss of control group were compared with results of butt-joint implants in testing group after 1 year of loading.The paired t test,Wilcoxon’s signed rank test and Mann-Whitney test were used to detect difference between the implants in each pair.Results:At the 12-month examination,no implant loss or other severe complications occurred to platform-switched implant or butt-joint implant group,the mean value of PD of platform-switched implants was 2.2±0.4mm,and 2.6±0.4mm for butt-joint implants.Significant difference was found for PD(P<0.05).No significant difference was found for mBI and mPI.All implants were successfully osseointegrated,and showed no peri-implant radiolucency.Marginal bone loss was assessed at the time of prosthesis delivery,3,6 and 12months after functional loading.The mean values of marginal bone loss of platform-switched implants(0.51±0.43mm,0.07±0.06mm,-0.03±0.29mm,and-0.12±0.31mm)were less than those of butt

关 键 词：种植体 功能 平台转换 牙列缺损 

分 类 号：R783[医药卫生—口腔医学]