Objective:The aim of this study was to assess the accuracy of implant impression using two different methods:digital impression and conventional impression and provide a more reliable impression method in clinical practice.Methods:A total of 32 implants from 20 patients were included in this study according to the exclusion criteria.Implant positions acquired by conventional silicone rubber impression and digital impression were compared to the implant positions determined by CBCT images.Distance deviations at the entrance and apical points,as well as angular deviations between the two impression methods,were calculated and statistically analyzed by SPSS 21.0 software.Results:The conventional method deviations were(0.731±0.296)mm for the entrance point,(0.982±0.310)mm for the apical point,and 2.805±0.908 degrees for the angle.The digital method deviations were(0.755±0.274)mm for the entrance point,(0.921±0.390)mm for the apical point,and 1.172±0.262 degrees for the angle.The angular deviation exhibited a significant(P＜0.05)difference as compared to the other two methods,but the other two measurements did not show any significant differences between each other.Conclusion:The digital impression method demonstrated greater accuracy than the conventional method in terms of the angulation deviation.The digital method might be more precise for implant impression applied in short dental arches.
关键词
印模精度/数字化印模技术/口内扫描杆
Key words
impression accuracy/digital impression technique/intraoral scanning body
维普
万方数据