Finite element analysis of class II mandibular unilateral distal extension partial dentures
Sabri L.A. Abdulkareem J.F. Salloomi K.N. Faraj S.A. Al-Zahawi A.R. Abdullah O.I. Tulunoglu I.
September 2022SAGE Publications Ltd
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
2022#236Issue 179407 - 9418 pp.
The current paper aims to investigate the stress distribution developed in Kennedy Class II mandibular distal extension removable partial dentures due to applying a unilateral load condition in both vertical and lateral oblique directions. 3D models of mandible bone and RPD framework were first built based on actual patient data and later exported to ANSYS software to implement the numerical analysis. For realistic analysis, the model considered the frictional contact between the RPD retainers with the teeth and mucosa with the resin denture base by applying the feature of small sliding. To ensure maximum longevity and suitability of restoration, two different metallic RPDs constructed from commercially pure titanium (CP Ti) and cobalt–chromium (Co-Cr) base materials were investigated within the proposed model. It was found that the highest stress value was seen within the Co-Cr framework followed by the titanium framework, particularly within the bar clasp under both loading directions. The principle abutment of the distal extension side carried the highest stress value under both RPD models in both loading cases. Also, it was found that the captured von Mises stress levels within the titanium bar clasps were lower than that in Co-Cr demonstrating both long durability and high flexibility of Ti clasps.
finite element analysis , partially edentulous mandible , Removable partial denture , unilateral distal extension base
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Department of Mechatronics, Al-Khwarizmi College of Engineering, University of Baghdad, Baghdad, Iraq
Department of Prosthodontics, College of Dentistry, University of Sulaimani, Sulaimani, Iraq
Automated Manufacturing Engineering Department, Al-Khwarizmi College of Engineering, University of Baghdad, Baghdad, Iraq
Conservative Department, College of Dentistry, University of Sulaimani, Sulaimani, Iraq
Department of Energy Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq
Department of Mechanics, Al-Farabi Kazakh National University, Kazakhstan
System Technologies and Engineering Design Methodology, Hamburg University of Technology, Hamburg, Germany
Department of Comprehensive Care, Case School of Dental Medicine, Case Western Reserve University, Cleveland, OH, United States
Department of Mechatronics
Department of Prosthodontics
Automated Manufacturing Engineering Department
Conservative Department
Department of Energy Engineering
Department of Mechanics
System Technologies and Engineering Design Methodology
Department of Comprehensive Care
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