Thesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Systems and Biomedical Engineering

One of the main principles in orthodontics is to impose irreversible bone progressive deformity gradually using speci{uFB01}c tools as force systems applied on the teeth. The bone deformity will lead the teeth into new positions. By optimizing positions of applied forces and their intensities, orthodontic treatment could be reduced in cost and time. Routine orthodontic treatments are mainly base on empirical knowledge, experience, rather than simulation. It is interesting to list here the contributions of this thesis.These are four different objectives: 1-Construct an expert system to give the time line of forces required and to make a decision about reaching the final destination from treatment. 2-This expert system is built using C# and fuzzy logic technique depending on displacement, young's modulus of the material and degree of pain 3-Assisting the orthodontist in selecting the suitable materials of braces and arch wires during the treatment process 4-Assist the arch wires and braces companies to validate the quality and the efficiency of new materials of their new products

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