The effects of hydroxyapatite coatings on stress distribution near the dental implant–bone interface

• Published in: Applied surface science Vol. 255; no. 2; pp. 273 - 275
• Main Authors: Jiang, W., Wang, W.D., Shi, X.H., Chen, H.Z., Zou, W., Guo, Z., Luo, J.M., Gu, Z.W., Zhang, X.D.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 15-11-2008; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Dental implant; Exact sciences and technology; Finite element analysis; Hydroxyapatite coatings; Physics; Stress distribution; 68.35.Gy; Hydroxyapatite coatings; 46.70.Lk; Finite element analysis; Stress distribution; Dental implant; Finite element method
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2008.06.165

The effects of different thickness of hydroxyapatite (HA) coatings on bone stress distribution near the dental implant–bone interface are very important factors for the HA-coated dental implant design and clinical application. By means of finite element analysis (FEA), the bone stress distributions near the dental implant coated with different thicknesses from 0 to 200
μm were calculated and analyzed under the 200
N chewing load. In all cases, the maximal von Mises stresses in the bone are at the positions near the neck of dental implant on the lingual side, and decrease with the increase of the HA coatings thickness. The HA coatings weaken the stress concentration and improve the biomechanical property in the bone, however, in HA coatings thickness range of 60–120
μm, the distinctions of that benefit are not obvious. In addition, considering the technical reason of HA coatings, we conclude that thickness of HA coatings range from 60 to 120
μm would be the better choice for clinical application.