Preliminary study on the influence of the dimensional stability of 3D printed resin master model on the replication accuracy of implant replicas.
10.7518/hxkq.2025.2024462
- Author:
Xin LI
1
;
Yuzong LU
2
;
Yongtao YANG
3
;
Aonan WEN
4
;
Yong WANG
3
;
Yijiao ZHAO
3
Author Information
1. Dept. of Oral Implantology, Affiliated Hospital of Qingdao University, School of Stomatology, Qingdao University, Qingdao 266100, China.
2. Shandong Huaxin Denture Co., Ltd, Qingdao 266106, China.
3. Institute of Medical Techno-logy, Peking University Health Science Center, Beijing 100191, China.
4. Center of Digital Dentistry, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & NHC Key Laboratory of Digital Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.
- Publication Type:Journal Article
- Keywords:
3D printing;
accuracy;
dimensional stability;
implant restoration;
resin working model
- MeSH:
Printing, Three-Dimensional;
Humans;
Dental Implants;
Models, Dental;
Dental Impression Technique;
Crowns
- From:
West China Journal of Stomatology
2025;43(5):689-695
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVES:This study aimed to investigate the influence of the dimensional stability of 3D printed resin master model on the replication accuracy of implant replicas.
METHODS:Ten digital impressions of patients undergoing continuous crowns or fixed bridge restoration 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 printing. 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 increased 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.
CONCLUSIONS:The insufficient dimensional stability of 3D printed resin models can lead to changes in the relative position and angle of the replicas, thereby affecting the accuracy of the replicas in recreating the implant's position. Complete manufacturing of prosthesis is recommended within 7 days after the model is printed.
