Impact of Recent Advances in Implant Surface Structure on Stress Distribution in Different Directions of Load Application: A Finite Element Analysis


  • Wessam M. Dehis Associate Professor at Fixed and Removable Prosthodontics Department, Oral and Dental Research Institute, National Research Centre, Cairo, Egypt.
  • Sherif Aly Sadek Associate Professor at Prosthodontic Department, Faculty of Dentistry, Cairo University, Cairo, Egypt.


Implant surface structure, Stress distribution, Load Application, Finite Element Analysis, Implant supported removable partial overdenture


Edentulism is a co-morbidity to numerous systemic and oral defects as; diabetes, osteoporosis and alveolar bone deficiency frequently challenge the dental implant therapy success. Implant’s design and surface alterations have a considerable impact on the magnitude and pattern of stresses distributed sequential to the massive occlusal forces and bite strokes applied to dental implants avoiding major bone defects and consequent implant’s failure. This study aimed to both assess and compare the impact of two dissimilar implant surface structures on stress distribution in maxillary implant supported removable partial overdenture (RPOD) utilizing three-dimensional (3D) Finite element analysis (FEA). Results: The present study revealed that Implant B (Trabecular Metal Zimmer implants) values were much less than those of Implant A (Straumann Roxolid SLActive implants) regarding stress distribution for maxillary implant supported RPOD. Conclusion: The trabecular porous tantalum implant can provide better distribution of stress among cortical and cancellous bone and can be a promising substitute for providing successful implant survival rate. Further research and clinical studies are recommended regarding porous tantalum implants with different prosthetic appliances especially the maxillofacial
obturators and compromised cases as osteoporosis patients.