DSpace Arşivi :: by Yazar "Güler, Mehmet Sami" değerine göre listeleniyor

Listeleniyor 1 - 1 / 1

Evaluation of Stress Distributions of Zirconia Connecting Screw in Bruxism: A Finite Element Analysis
(Selçuk Üniversitesi, 2021) Sivrikaya, Efe Can; Güler, Mehmet Sami; Bekci, Muhammed Latif
Background: The purpose of the present study was to evaluate the stress distributions of zirconia or titanium connecting screws under different loads (vertical and oblique) in bruxism patients and to indicate its applicability by comparing with physiological stress limit values. Methods: Four different models were created in which the implants were the same size and design, with dental implant, abutment and connection screws made of zirconia or Ti (only screw). 3D-Finite element analysis (3D-FEA) was applied to study the effect of a vertical load (1000 N) and oblique load (an angle of 30°) on abutments in the models. The placement of implants are mandibular right first molar. Computerized tomography imaging of cadaver mandibles was used. Von Mises stresses of the different screw materials were compared with each other and the physiological stress limit values for zirconia. Results: Von Mises stress values increased in oblique loading in all models. The von Mises stress values were significantly reduced in the titanium screw than zirconium under both loading simulations. Conclusion: In patients with a high biting force physiological stress limit values for zirconia were not exceeded. Zircon connection screw may be used in patients with bruxism.