International Poster Journal of Dentistry and Oral Medicine



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Int Poster J Dent Oral Med 10 (2008), No. 4     15. Dec. 2008
Int Poster J Dent Oral Med 10 (2008), No. 4  (15.12.2008)

Poster 427, Language: English

Wax-pattern or metallic framework investigations trough stress and deformation analysis
Bortun, Cristina Maria/Sandu, Liliana/Topala, Florin/Cernescu, Anghel/Faur, Nicolae
Introduction: The study utilizes noninvasive experimental methods to evaluate the removable partial denture framework stress and distortion areas in order to solve some conception and execution deficiencies.
Materials and Methods: There were tested 30 "LiWa" (WP Dental, Beven/Hamburg Germany) wax-patterns and 30 removable partial denture metallic frameworks. They were 3D laser scanned with a LPX 1200 (Roland DG Corporation). Scanned wax-patterns were processed using "Pixform Pro" (Roland DG Corporation) program. They are exported as DXF files and imported by a CAD program Mechanical Engineering Software -SolidWork 2007 (SolidWork Corporation West).
Results: The 3D models were used for simulation of external force actions on some RPD components. Wax-pattern or metallic framework stress and deformation analysis allow the distinguish of minimal mechanical strength.
Conclusions: Removable partial denture testing, at wax-pattern stage is benefit for determination of the states of tensions, minimum resistance areas, distinguish and appreciation the life time of future dentures.

Keywords: finite element analysis, LiWa-wax pattern, removable partial denture

October 24th -27th, 2007
FDI World Dental Federation, Annual World Dental Congress
Dubai, United Arab Emirates