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The objective of this research is to determine how hydroxyapatite (HA) coating affects the functioning of middle ear prostheses when they are exposed to normal sound levels. We applied 90 dB of sound pressure to a finite element model of the human ear at frequencies ranging from 250 to 8000 Hz. We looked stress and displacement changed in the Z direction for three materials: Ti25Nb25Zr, Bonecement and PLA, both with and without HA coating. Ti25Nb25Zr had the most stable mechanical behavior, with low stress in the range of 2E-09 MPa and micro-motion approximately. The coating made it even better with comparison of materials cited. The results show that HA coating enhances the mechanical stability of the material, particularly in Ti25Nb25Zr, making it the most suitable material for rebuilding the middle ear.
Eddine et al. (Tue,) studied this question.