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Automated tooth crown design with optimized shape and biomechanics properties
Xiaoxian Jin1, Shengfa Wang2, Jiangbei Hu2
1School of Biomedical Engineering, Faculty of Medicine, Dalian University of Technology, Dalian, China.
Frontiers in Bioengineering and Biotechnology
|December 13, 2023
Summary
This study introduces an automated algorithm for dental crown restoration, improving design accuracy and longevity. The new method optimizes biomechanics for uniform stress distribution, enhancing restoration performance.
Area of Science:
- Biomedical Engineering
- Dental Materials Science
- Computational Mechanics
Background:
- Manual dental crown design is subjective and time-consuming.
- Current methods lack biomechanical optimization, leading to stress concentration and reduced restoration lifespan.
Purpose of the Study:
- To develop a fully automated algorithm for dental crown restoration.
- To integrate biomechanical optimization into the crown design process.
- To improve the accuracy and durability of dental restorations.
Main Methods:
- Constructed a conditional shape model (CSM) from dental scans to capture inter-teeth correlations.
- Utilized deformable model fitting to estimate optimal crown shape based on patient scans.
- Employed surface warping for seamless crown integration and generated porous internal structures for stress reduction.
Main Results:
- The automated algorithm achieved a mean surface distance of less than 2 mm compared to manual designs.
- Mechanical simulations confirmed uniform stress distribution with the generated internal supporting structures.
- The algorithm successfully optimized crown shape and integration with surrounding teeth.
Conclusions:
- The developed automated algorithm offers an accurate and efficient solution for dental crown restoration.
- Biomechanical optimization through internal porous structures enhances the mechanical integrity and working life of crowns.
- This approach addresses the limitations of manual design, paving the way for improved dental prosthetics.
