OBJECTIVE: This topic is to present the method to construct the complex or irregular geometry of dental prostheses models for finite element analysis. MATERIALS AND METHODS: Laser scanning was performed to detect the outer contour of distal extension type of removable partial denture, complete denture, and implant supported-prosthesis. The digital data of each group was imported into software called, Geomegic Studio (Raindrop), to approximate with 3D fitting algorithms based on reverse engineering methods and surface configurations were rendered. For rest and clasp of removable partial denture were modified in reverse engineering CAD software (Surfacer, Imageware Division, SDRC Inc.). All surface data were exported as IGES format for mesh generation utilized in finite element analysis. RESULTS: The geometry of all dental prostheses models were well defined such as clasp, rest, as well as detail configuration anatomy of the prosthesis teeth. The time consuming for model rendering were reduced when comparing with conventional technique, manual constructed model in CAD software only. And, the accuracy of this technique is nearly 100 %. CONCLUSIONS: This technique is able to be applied in dental research field and be established by the dental researchers themselves. The accuracy of the images is enough for finite element analysis.

Back to the Prosthodontics Research Program
Back to the IADR/AADR/CADR 82nd General Session (March 10-13, 2004)

Top Level Search