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[3D-data acquisition of partially edentulous cast using grating projection method].
1Dept. of Prosthodontics, School of Stomatology, China Medical University, Shenyang 110002, China.
Summary
A new 3D scanning method accurately captures dental cast data quickly. This technology enables precise digital modeling for removable partial denture framework design.
Area of Science:
- Biomedical Engineering
- Dental Technology
- Computer-Aided Design
Background:
- Digitalization of dental prosthetics is crucial for modern dentistry.
- Accurate 3D data acquisition of dental casts is a foundational step for computer-aided design (CAD).
Purpose of the Study:
- To introduce a novel method for 3D data acquisition of partially edentulous casts.
- To establish a basis for reconstructing 3D digital models for removable partial denture framework CAD.
Main Methods:
- Projecting sinusoidal fringe patterns onto the cast surface.
- Recording deformed fringe patterns with a digital camera and demodulating phase with phase-shifting.
- Utilizing triangulation for phase-to-height conversion and integrating multi-view data for complete 3D reconstruction.
Main Results:
- Achieved dense and complete point-cloud data, minimizing scanning blind zones.
- Reconstructed 3D digital models with sharp and clear anatomical structures.
Conclusions:
- The presented method offers a high-precision, high-speed alternative for 3D data acquisition of partially edentulous casts.
- This technique effectively supports subsequent 3D design processes for removable partial denture frameworks.