Comparative analysis of mechanical behavior of the tooth pair contacting with different mouthguard configurations

International Scientific and Technical Youth Conference "Perspective Materials of Constructional and Medical Purpose"

材料科学;医药卫生

Kamenskikh, A.A.^1 ; Ustjugova, T.N.^1 ; Kuchumov, A.G.^1

Department of Computational Mathematics, Mechanics and Biomechanics, Perm National Research Polytechnic University, Perm, Russia^1

关键词: Comparative analysis;    Contact parameters;    Contact problem;    Contact type;    Maximal stress;    Mechanical behavior;    Sport injuries;    Strain intensity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/511/1/012003/pdf
DOI  :  10.1088/1757-899X/511/1/012003

来源: IOP

【 摘 要 】

Sport mouthguards are an important piece of athletic equipment. They are used to prevent sport injuries of the dentofacial system. Paper presents comparative analysis of mechanical behavior of the tooth pair contacting with the mouthguard. Four contact types are considered: Contact without mouthguard, contact with single-layer mouthguard, contact with three-layer mouthguard (with A-silicone thickness of 1.5 mm), contact with three-layer mouthguard (with A-silicone thickness of 3.5 mm). The axi-symmetric contact problem is solved with taking into account of the friction and all types of contact. We revealed a number of patterns in the results of computations with varying of indentation force in the range of 50-250 N. In the case of mouthguard contact (with A-silicone thickness of 3.5 mm), we obtained the dramatic decrease of maximal stress intensity. The maximal stress intensity vs indentation force dependence is close to linear. The silicone layer has an influence on the contact parameters magnitude and distribution. Dependence between strain intensity vs indentation force is nonlinear.