Abstract:

Objective　The 3shape Trios intraoral intraoral scanner combined with 3D printing technology is used to make single crown restoration，determine its feasibility，and discuss and evaluate the clinical effectiveness and patient satisfaction. Methods　In this study，32 patients whose single premolar teeth needed crown restoration were included and divided into two groups randomly：the experimental group（16 patients）and control group（16 patients）. In the experimental group，the restorations were made by 3 shape Trios and 3D printer. As for the control group，the regular design method was applied to restore their teeth. The time consumed in the first insertion of each restoration in both groups was recorded. The quality of the prostheses was assessed by another dentist. The prostheses satisfactions were evaluated by the patients. Results　The acceptance rate of the patients on the digital rehabilitation in the experimental group was 100%. There was no significant difference in the quality of the prostheses between the two groups. The satisfaction rate of the patients on prostheses and facial appearance was significantly higher in the experimental group than in control group（P < 0.05）. In addition， the time consumed in the first insertion of the experimental group was much shorter than that in the control group（P < 0.05）. Conclusion　The new method of the 3shape Trios scanner combined with 3D printer for making single crown is a practical technique. This method is useful in shortening the time consumed in the restoration of single crown，improves the patient satisfaction of the prostheses.

Key words: intraoral scanner, 3D printing technology, digital dental impressions

摘要：

目的　使用3shape Trios口内扫描仪结合3D打印技术进行单冠固定修复，判断其可行性，并对其临床效果及患者满意度进行评价与探讨。方法　选取2015年7月至2016年1月就诊于中国医科大学附属口腔医院修复二科行单颗前磨牙全瓷冠固定修复患者32例。随机分为研究组与对照组，每组各16例。研究组采用3shape Trios口内扫描仪结合3D打印技术制作修复体；对照组通过硅橡胶取模灌注石膏模型的方法制作修复体。记录每例患者试戴修复体时所花费的时间，对每一修复体质量进行盲评，患者最后一次复诊时填写满意度调查问卷。结果　研究组患者均能接受数字化修复方式，研究组与对照组修复效果差异无统计学意义（P＞0.05）。研究组患者修复体满意度明显高于对照组，修复体试戴时间明显短于对照组（P＜0.05）。结论　3shape Trios口内扫描仪结合3D打印技术制作单冠固定修复义齿能被患者接受，临床效果好，可减少医生椅旁操作时间，提升患者对于单冠固定修复义齿的满意度。

关键词: 口内扫描仪, 3D打印技术, 数字化模型