螺丝固位和粘接固位在第一磨牙种植修复中的效果评价

Comparative evaluation of cement-retained versus screw-retained implant-supported single crowns in fisrt molar tooth restorations

目的评价螺丝固位基台一体冠和粘接固位在第一磨牙单颗种植中的修复效果。方法采用回顾性队列研究,收集就诊并完成第一磨牙单颗种植修复的91例患者共104颗种植修复病例,其中52颗为螺丝固位基台一体冠(SR),52颗为粘接固位修复(CR)。分别在患者种植修复当天及戴牙后6、12个月时记录种植体周围的牙周指标及患者满意度评分,拍摄X线片并测量种植体边缘骨吸收量,参照Barnes评定标准对种植冠修复后的邻接关系进行评价。结果修复完成后6~12个月,两组种植体均完好无松动;SR组3例患者在6个月复查时发现中央螺丝松动,重新加力至35 N/cm,2个月再次复查时无松动;两种固位方式在修复后12个月时螺丝固位组邻接合格率为90.38%,显著低于粘接固位组99.04%的邻接合格率(P=0.037),两种修复体边缘骨吸收量和牙周软组织指标mPLI和mSBI差异均无统计学意义。结论两种固位方式均能取得良好的种植修复效果,粘接固位在邻接关系恢复和防止食物嵌塞上更具优势。

Objective To evaluate the effect of screw-retained abutment integrated crown and cement-retained in first molar tooth implant restorations.Methods A retrospective study was conducted to select 91 patients.A total of 104 implant restorations were completed,of which 52 were screw-retained abutment integrated crown(SR)and 52 were cement-retained(CR).The data of the patients on the day of implant restoration and 6th and 12th month after teeth were conducted,the bone height of the mesial and distal edges of the implants were measured,the periodontal clinical indexes around the implants and the patient satisfaction score were recorded at the time of reexamination,and the proximal contacts after implant crown restoration was evaluated according to Barnes evaluation standard.Results 6 and 12 months after restoration,the implant retention rate in SR group and CR group was 100%;in the screw retention group,the retention screws of 3 restorations were loosen at 6 months,and the torch force was applied to 35 N/cm;at 12 months after restoration,the qualified rate of proximal contacts in the screw retention group was 90.38%,which was significantly lower than that of 99.04%in the adhesive retention group(P=0.037).There was no difference in marginal bone absorption and periodontal soft tissue indexes mPLI and mSBI between the two groups.Conclusion The two retention methods can both achieve good implant effects,and cement-retained restorations has more advantages in the first molar tooth restoration of proximal contact and the prevention of food impaction.