Intraoral digital implant scans: Parameters to improve accuracy.

Revilla-León, Marta; Lanis, Alejandro; Yilmaz, Burak; Kois, John C; Gallucci, German O (2023). Intraoral digital implant scans: Parameters to improve accuracy. Journal of prosthodontics, 32(S2), pp. 150-164. Wiley 10.1111/jopr.13749

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PURPOSE

To report the means to maximize the predictability and accuracy of intraoral digital implant scans through the evaluation of operator and patient related factors.

MATERIALS AND METHODS

Collection of published articles related to factors that can decrease the scanning accuracy of intraoral digital implant scans was completed in 4 data sources: MEDLINE, EMBASE, EBSCO, and Web of Science. All studies related to variables that can influence the accuracy of intraoral digital implant scans obtained by using intraoral scanners (IOSs) were considered. These variables included ambient lighting, scanning pattern, implant scan body (ISB) design, techniques for splinting ISBs, arch location, implant position and inter-implant distance.

RESULTS

Among operator-related factors, ambient lighting conditions, scanning pattern, and ISB design (material, geometry, and retention design) can impact the accuracy of intraoral digital implant scans. It is unclear the optimal ISB for maximizing the IOSs accuracy; however, polymer ISB can wear with multiple reuse and sterilization methods. Among patient-related factors, additional variables should be considered, namely arch (maxillary vs mandibular arch), implant position in the arch, inter-implant distance, implant depth, and angulation.

CONCLUSIONS

Ambient lighting conditions should be established based on the IOS selected to optimize the accuracy of intraoral digital implant scans. The optimal scanning pattern may vary based on the IOS, clinical situation, and the number of implants. The optimal ISB design may vary depending on the IOS used. Metallic implant scan bodies are preferred over polymer ISB designs to minimize wear due to multiple use and sterilization distortion. Among patient-related factors, additional variables should be considered namely the arch scanned, implant position in the arch, inter-implant distance, implant depth and angulation. The impact of these factors may vary depending on the IOS selected. This article is protected by copyright. All rights reserved.

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