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Title page for ETD etd-02102009-195927


Type of Document Dissertation
Author Li, Qiong
Author's Email Address qiong.li@vanderbilt.edu
URN etd-02102009-195927
Title An expert system for stress analysis of human teeth
Degree PhD
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Carol Rubin Committee Chair
Nilanjan Sarkar Committee Member
prodyot.k.basu Committee Member
Roy Xu Committee Member
Samuel Mckenna Committee Member
Keywords
  • Teeth -- Mechanical properties
  • Teeth -- Analysis -- Computer-aided design
  • FEA
  • expert system
  • CAD
  • Tooth stress analysis
  • Expert systems (Computer science) -- Design and construction
Date of Defense 2009-01-30
Availability unrestricted
Abstract
A general computational model for describing the stress state for any shape tooth under any loading conditions is presented. The model is constructed based on tooth type, dimensions, materials, loads, boundary conditions, etc. The model can move seamlessly between computer aided design (CAD) and finite element analysis (FEA) programs. Model validation is provided by comparison with three previous studies.

This approach is then incorporated into an expert system with the implementation of CAD and FEA customized codes for automating the stress analysis process. Dental researchers and practitioners can use the system through a graphical user interface (GUI). Tooth shape, concentrated and distributed loads, a variety of boundary conditions, and many other parameters, such as periodontal ligament thickness and tooth bone width, can be easily varied. This permits stress evaluations for both individual case studies and parametric analyses of human teeth. Options for shape optimization and convergence tests are presented for creating reasonable geometries and obtaining accurate results.

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