Application of stereophotogrammetry in complete-arch implant impression making: a literature review

doi:10.12337/zgkqzzxzz.2024.12.023

Abstract

Abstract: 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.

Key words: Stereophotogrammetry, Impression, Accuracy, Complete-arch implant-supported restoration

Lei Yanxi, Yuan Quan, Lyu Mingyue. Application of stereophotogrammetry in complete-arch implant impression making: a literature review[J]. Chinese Journal of Oral Implantology, 2025, 29(6): 590-595.

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