下颌覆盖义齿短微型种植体与标准长度微型种植体效果比较

目的:比较下颌覆盖义齿短微型种植体(mini dental implant,MDI)与标准长度MDI修复牙槽嵴重度萎缩无牙颌患者的效果,为临床应用提供参考.方法:选择进行下颌覆盖义齿短MDI和标准长度MDI修复的无牙颌患者60例,分为短MDI组(30例)和标准MDI组(30例),比较2组基线、术后1周和1年种植体周围组...

Comparison of effects between short and standard mini dental implants for mandibular overdentures

PURPOSE: To investigate 1 year follow-up results of short mini dental implant (MDI) and conventional-size MDI for mandibular overdentures, and to provide reference for clinical application. METHODS: Thirty edentulous patients undergoing short MDI and 30 edentulous patients undergoing standard MDI were enrolled. The baseline data, clinical peri-implant indicators, implant survival and success rate, implant complications and patient satisfaction were compared between the two groups. SPSS 20.0 software package was used for statistical analysis. RESULTS: The marginal bone loss (MBL) and probing depth(PD) of short MDI group 1 year after implantation were less than those in standard MDI group, but with no significant difference(P>0.05). The modified plaque index (MPI) and modified bleeding index (MBI) 1 year after implantation in short MDI group were significantly less than those in standard MDI group(P<0.05). The 1-year implant survival rate and success rate of short MDI group were higher than those of standard MDI group, but with no significant difference(P>0.05). The total incidence of complications in standard MDI group was significantly higher than that in short MDI group(P<0.05). The satisfaction rate of short MDI group was significantly higher than that of standard MDI group in terms of implant stability, chewing function, speech, comfort and aesthetics(P<0.05). CONCLUSIONS: Application of short MDI for mandibular overdentures in edentulous patients with severely atrophied alveolar ridges has higher clinical effect and satisfaction rate.