The research on the dental bridge model-making process based on the curing shrinkage epoxy and residual stress reduction

Abstract Elderly people suffer from more and teeth problems. The tooth-implant-supported prosthesis provides a reliable solution to missing patients. proper dental design prevent overstress is essential due the mechanical characteristics of bridge abutments are different. finite element method widely applied, but experimental validation required. curing shrinkage epoxy applied for photoelasticity measurement because its property close cancellous bone. A series process developments, including mold design, residual stress releasing artificial soft film making, accomplished in this research simulate response bridges practice. proven can be at dentist's workshop. transmission technique measure distribution it nondestructively continuous improvement guideline. model-making procedure tools available Following procedure, model shows low level that system cannot detect. Excellent reproducibility proposed has been validated. These models exhibit stable maximum 2.13 MPa around natural tooth apex apical implant region when 300 N vertical loading upon bridge. Finally, bridge, implant, built validated by photoelastic measurement.