华西口腔医学杂志2025，Vol.43Issue(5)：689-695,7.DOI:10.7518/hxkq.2025.2024462
3D打印树脂种植工作模型尺寸稳定性对替代体复制精度影响的初步研究
Preliminary study on the influence of the dimensional stability of 3D printed resin master model on the replication accuracy of implant replicas
摘要
Abstract
Objective This study aimed to investi-gate the influence of the dimensional stability of 3D print-ed resin master model on the replication accuracy of im-plant replicas.Methods Ten digital impressions of pa-tients undergoing continuous crowns or fixed bridge res-toration supported by two implants were obtained,and resin models with implant replicas were 3D printed.Scanning rods were fixed on the replicas 3,7,and 14 days after print-ing.The 3D,linear,and angular deviations of the scanning rods at different times were analyzed through Geomagic Wrap 2021 software.Results The position of the replicas shifted mesiolingually,in the same direction as the shrinkage of the model.From day 7 onward,the 3D,distance linear,and angular deviations of the replicas(scanning rod)significantly in-creased compared with those on the 3rd day(P<0.05).On the 14th day,the changes were even more pronounced,with the above deviations showing statistical significance(P<0.05)compared with those for the 3-day and 7-day groups.No statistical difference in height linear deviation was observed among the groups.Conclusion The insufficient dimension-al stability of 3D printed resin models can lead to changes in the relative position and angle of the replicas,thereby affect-ing the accuracy of the replicas in recreating the implant's position.Complete manufacturing of prosthesis is recom-mended within 7 days after the model is printed.关键词
3D打印/树脂工作模型/尺寸稳定性/种植修复/精度Key words
3D printing/resin working model/dimensional stability/implant restoration/accuracy分类
医药卫生引用本文复制引用
李欣,鲁玉宗,杨咏涛,温奥楠,王勇,赵一姣..3D打印树脂种植工作模型尺寸稳定性对替代体复制精度影响的初步研究[J].华西口腔医学杂志,2025,43(5):689-695,7.基金项目
Qingdao Natural Science Foundation(23-2-133-zyyd-jch) （23-2-133-zyyd-jch）
Medical and Health Science and Technology Development Plan Project of Shandong Province(202208050566) 青岛市自然科学基金(23-2-133-zyyd-jch) （202208050566）
山东省医药卫生科技发展计划项目(202208050566) （202208050566）
