Application of stereophotogrammetry in complete-arch implant impression making:a literature review
The accuracy of impressions is closely related to the passive fit of complete-arch implant-supported prostheses,which significantly affects their long-term outcomes. Conventional open-tray impression techniques have been recognized for their high accuracy in full-arch implant restorations and are still regarded as the gold standard. However,with the ongoing advancements in digital technology,stereophotogrammetry (SPG) has been introduced for digital impression-making in complete-arch implant cases. Compared to the traditional open-tray technique,SPG offers advantages such as reduced chair time,increased patient comfort,and a simplified workflow. Despite these benefits,the accuracy of SPG remains a topic of debate. This article reviews the principles and methods of SPG,its in vivo and in vitro applications,and factors influencing impression accuracy,to provide a reference for further development of SPG in implant dentistry.
国家科技期刊平台
NSTL
万方数据
