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CASE REPORT
Application of photogrammetry to CAD/CAM fabrication of an implantsupported prosthesis in an edentulous mandible – case report
 
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Zakład Protetyki Stomatologicznej, Uniwersytet Medyczny w Łodzi
 
 
Submission date: 2025-11-21
 
 
Final revision date: 2026-02-24
 
 
Acceptance date: 2026-03-19
 
 
Publication date: 2026-03-19
 
 
Corresponding author
Oliwia Ligocka   

Zakład Protetyki Stomatologicznej, Uniwersytet Medyczny w Łodzi
 
 
Prosthodontics 2026;76(1):25-33
 
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ABSTRACT
Implantoprosthetic treatment of edentulous patients may involve the use of conventional and digital methods. Conventional methods provide us with high degree of accuracy regarding the fit of the prosthesis to the implant. However, they are burdened with disadvantages such as time consumption, impression deformity or significant discomfort for the patient during the procedure. These inconveniences can be eliminated with digital methods. Yet, relying exclusively on digital impressions obtained with intra-oral scanner will not let us achieve adequate accuracy. The PICDental system, which combines the accuracy of conventional methods with the comfort of digital methods, seems to offer the satisfactory solution. It includes transfers in the shape of flags and extra-oral PIC Camera. Coded transfers are screwed directly to the implants. The camera, positioned 15-30 cm from the patient’s mouth, takes 50-60 images of each pair of implants; their superimposition will produce a 3D image. The device enables the registration of position and orientation of the implants with the accuracy of 23-99 micrometers. In order to obtain a full digital impression, additional scans of soft tissues of the prosthetic base are necessary followed by convergence into an STL file format.
eISSN:2391-601X
ISSN:0033-1783
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