3D FEA study on: Implant Threading Role on Selection of Implant and Crown Materials


  • Ahmad Mohamad Wazeh Alfarabi College, Jeddah
  • Mohamed I. El-Anwar Department of Mechanical Engineering, National Research Centre, Giza
  • Rami M. Galal Atia Department of Fixed and Removable Prosthodontics, Oral and Dental Division, National Research Centre, Giza, Egypt; Department of Fixed Prosthodontics, Faculty of Oral and Dental Medicine, Al Nahda University, Beni Suef, Egypt; Department of Fixed Prosthodontics, Faculty of Oral and Dental Medicine, Ahram Canadian University, Giza
  • Rana Mohammed Mahjari Alfarabi College, Jeddah
  • Sara Abdulelah Linga Alfarabi College, Jeddah
  • Linah Mujeeb Alhaq Al-Pakistani Alfarabi College, Jeddah
  • Salah Abdel Azeem Yousief Restorative Dentistry Dept., AL-Farabi Dental College, Jeddah, Saudi Arabia; Crown & Bridge Dept., Faculty of Oral and Dental Medicine, Al Azhar University, Assuit Branch, Cairo




Dental implant, Finite Element Analysis, PEEK, PEKK, Titanium.


AIM: This study deeply investigates the effect of dental implant threading and material selection on the mandibular bone under two different crown materials (Translucent Zirconia and Porcelain fused to metal).

METHODS: Two different designs of single piece dental implants were supporting dummy crown above simplified bone geometry in two finite element models. Models components were created by general-purpose CAD/CAM engineering package and then assembled inside ANSYS before meshing and assigning materials. Compressive loading of 100 N and 45º oblique loading of 50 N were tested.

RESULTS: Twenty-four case studies were analysed, and their results were compared. Micro thread reduces implant maximum Von Mises stress by about 50 to 70% than regular thread one. Oblique loading of 50 N will produce 4 to 5 times more maximum Von Mises values on implant body than 100 N vertical loading. Zero or negligible effect on the cortical bone was recorded when exchanging the tested crown material. Although titanium implant can also reduce cortical bone, Von Mises stress by 50 to 100% in comparison to reinforced PEKK (poly ether-ketone-ketone) or PEEK (poly-ether-ether-ketone).

CONCLUSIONS: Reinforced PEKK and PEEK implants can represent a good alternative to titanium implants. Zirconia crown distributes the applied load better than Porcelain fused to a metal one. Regardless of the implant material, an implant with the micro thread has superior behaviour in comparison to a regular one. Zirconia crown above titanium implant with the micro thread may represent the best option for patient bone.


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How to Cite

Wazeh AM, El-Anwar MI, Galal Atia RM, Mahjari RM, Linga SA, Al-Pakistani LMA, Yousief SAA. 3D FEA study on: Implant Threading Role on Selection of Implant and Crown Materials. Open Access Maced J Med Sci [Internet]. 2018 Sep. 11 [cited 2021 Jun. 25];6(9):1702-6. Available from: https://oamjms.eu/index.php/mjms/article/view/oamjms.2018.331



D - Dental Sciences