TY  - JOUR
TI  - Evaluation of Stress Distributions of Zirconia Connecting Screw in Bruxism:A Finite Element Analysis
AB  - Background: The purpose of the present study was to evaluatethe stress distributions of zirconia or titanium connecting screwsunder different loads (vertical and oblique) in bruxism patientsand to indicate its applicability by comparing with physiologicalstress limit values. Methods: Four different models were created in which theimplants were the same size and design, with dental implant,abutment and connection screws made of zirconia or Ti (onlyscrew). 3D-Finite element analysis (3D-FEA) was applied tostudy the effect of a vertical load (1000 N) and oblique load (anangle of 30°) on abutments in the models. The placement ofimplants are mandibular right first molar. Computerizedtomography imaging of cadaver mandibles was used. Von Misesstresses of the different screw materials were compared witheach other and the physiological stress limit values for zirconia. Results: Von Mises stress values increased in oblique loading inall models. The von Mises stress values were significantlyreduced in the titanium screw than zirconium under both loadingsimulations. Conclusion: In patients with a high biting force physiologicalstress limit values for zirconia were not exceeded. Zirconconnection screw may be used in patients with bruxism.
AU  - Sivrikaya, Efe Can
AU  - Güler, Mehmet Sami
AU  - Bekci, Muhammed Latif
DO  - 10.15311/selcukdentj.729494
PY  - 2021
JO  - Selcuk Dental Journal
VL  - 8
IS  - 3
SN  - 2148-7529
SP  - 617
EP  - 622
DB  - TRDizin
UR  - http://search/yayin/detay/504399
ER  -