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Year : 2020  |  Volume : 12  |  Issue : 5  |  Page : 491-497

Investigation of the effects of cement in different thicknesses and mechanical properties on implant with zirconia crown: A finite element analysis

1 Department of Prosthodontics, Faculty of Dentistry, Ankara Yildirim Beyazit University, Ankara, Turkey
2 TUBITAK Defence Industries Research and Development Institute, Ankara, Turkey

Correspondence Address:
Dr. Mahmut Sertac Ozdogan
Department of Prosthodontics, Faculty of Dentistry, Ankara Yildirim Beyazit University, Ayvalı Mah. 150. Sk. Etlik-Keçiören, Ankara.
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jioh.jioh_348_19

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Aim: To evaluate the stress distribution in the implant-supported mandibular premolar monolithic zirconia crowns with different cement types and thicknesses under constant masticatory force using three-dimensional (3D) finite element analysis (FEA). Materials and Methods: The 3D models of monolithic zirconia crowns, which were cemented on abutment, were generated. Nine numerical models were fabricated by applying different cement thicknesses (0.02, 0.05, and 0.10 mm). The solid models were imported into the FEA software and meshed into tetrahedral elements. All models were simulated under masticatory force loads of 100N at two points, respectively. Results: Stress distribution was affected by cement thickness. When the solutions of total deformation on crown were examined, it was observed that Cement-1 with a thickness of 0.02 mm showed the lowest value (0.07 mm). It was shown that the use of Cement-2 material with a thickness of 0.02 mm provides the lowest maximum principle stress on abutment (4.90MPa). When the stresses on the implant were examined, it was determined that the lowest stress values were again formed in cements with a thickness of 0.02 mm (130MPa). The results showed that 0.05 mm thick High Modulus Resin Adhesive Cement (Panavia, Kuraray, Tokyo, Japan) gave the lowest strain values. Conclusion: It was observed that the different resin and cement thicknesses played an important role in the stresses on the zirconia crown, abutment, and implant. Cement thickness has also been evaluated as an important factor, affecting the material life and leading to the preservation of recovery.

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