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Updated: May 10, 2026
Measuring the Complete-arch Distortion of an Optical Dental Impression
Published on: May 30, 2019
A clinical protocol for intraoral digital impression of screw-retained CAD/CAM framework on multiple implants based
Angel Moreno1, Beatriz Giménez, Mutlu Özcan
1Bista Eder Private Practice, Clínica Dental Bista Eder, Eibar, Guipuzcoa, Spain.
Purpose:
To obtain an accurate CAD/CAM metal framework over 6 implants using a Chairside Intraoral Scanner based on the principle of active (optical) wavefront sampling.
Material And Methods:
Six prototype cylindrical scan bodies screwed in the implants were used to obtain an intraoral digital impression. A conventional resin tooth try-in was fabricated and digitized with an extraoral scanner, and this dataset was merged to the digital data obtained from the intraoral impression to calculate the best framework design with advanced CAD software. The framework was fabricated with a 5-axis computer numerical control milling unit. Three clinical tests (saliva intrusion, Sheffield test, and screw resistance test) were performed to assess the fit of the framework.
Results:
Under 3 clinical tests, an accurate fit was observed.
Conclusion:
The case presented in this report proposes a new clinical protocol for obtaining accurate digital impressions of multiple implants.
