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[Computer aided design and manufacture of the removable partial denture framework]
Leilei Yang1, Xiaosheng Cheng, Ning Dai
1College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China. yll_nuaa@yahoo.cn
Summary
This study presents a new computer-aided design (CAD) method for removable partial denture (RPD) frameworks. The novel approach successfully fabricated RPD frameworks with a satisfactory fit using 3D data and rapid prototyping.
Area of Science:
- Biomaterials Science
- Dental Engineering
- Computer-Aided Design
Context:
- Partially edentulous patients require removable partial dentures (RPDs).
- Traditional RPD framework design can be time-consuming and may have fit issues.
- Advancements in 3D imaging and CAD software offer potential improvements in RPD fabrication.
Purpose:
- To demonstrate a novel computer-aided design (CAD) approach for removable partial denture (RPD) frameworks.
- To utilize 3D optical grating measurement and reverse engineering for RPD framework design.
- To prepare a 3D surface model for direct manufacturing via rapid prototyping (RP) and foundry.
Summary:
- A mandibular Kennedy Class II partially edentulous cast was scanned using a 3D-optical grating system.
- Reverse engineering and 3D CAD software were employed to design the RPD framework components (basis, major connectors, clasps).
- A 3D surface model was generated for fabrication using rapid prototyping and foundry, resulting in a well-fitting RPD framework.
Impact:
- Successful application of a novel CAD approach for RPD framework design.
- Demonstrates the feasibility of using 3D scanning and RP for fabricating custom RPD frameworks.
- Highlights the potential for improved fit and manufacturing efficiency in RPD production.
