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ORIGINAL RESEARCH Table of Contents   
Year : 2013  |  Volume : 24  |  Issue : 4  |  Page : 423-427
Finite element stress analysis on the influence of cuspal angle and superstructure materials in an implant-supported prosthesis


1 Department of Prosthodontics, Meenakshi Ammal Dental College and Hospital, Vanagaram, Chennai, Tamilnadu, India
2 Department of Prosthodontics, SRM Dental College, Ramapuram, Chennai, Tamilnadu, India

Correspondence Address:
N Gopi Chander
Department of Prosthodontics, SRM Dental College, Ramapuram, Chennai, Tamilnadu
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-9290.118384

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Purpose: To investigate the effect of superstructure materials and cuspal angle in an implant-supported fixed partial denture. Materials and Methods: This finite element analysis study was carried out with varying cuspal angulations of 0°, 20° and 33° and superstructure materials. The simulated models were loaded with 300N forces under different axial and non-axial angulations. The graphical and numerical stresses were investigated. Results: The results demonstrated that the maximum stress occurred in the metal framework in all the materials except acrylic, for which it occurred in the coronal part of the implant. In the acrylic, the maximum stress recorded was 78 MPa with the 20° angulation. Ni Cr recorded a maximum stress of 111 MPa with the 33° angulation. Conclusion: The cuspal morphology and type of superstructure material plays a pivotal role in controlling the stress transferred to the implant and the supporting bone.


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