Iranian Journal of Biomedical Engineering (IJBME)
نشریه علمی مهندسی پزشکی زیستی

Effects Of Type And Thickness Of Dental Implant Coatings On Maximum Stress At The Interface Of Coating-Implant And Bone-Coating

Document Type : Full Research Paper

Authors

Khalil Farhangdoust 1
Ali Banihashem 2
Ali Ghaneei 1

1 Mechanical Engineering Department, Ferdowsi University of Mashhad

2 Periodontics Department, Mashhad Dental School, Mashhad University of Medical Sciences

10.22041/ijbme.2005.13576
Abstract
Using ceramic coatings has increased in popularity due to their compatibility with bone, absence of the fibrous layer at the coating-implant interface, and the stronger coating-bone bonding. Among these coatings, hydroxyapatite (HA) and fluoroapatite (FA) are more popular. For the first time in this paper, modeling and stress analysis have been carried out for 24 implants in an axisymetric form using the finite element technique. Twelve of these samples belong to IMZ and the rest are from Dyna system. All implants had HA and FA coatings with thicknesses between 10 to 100 microns. The stress analysis results show that the stress concentration at the implant-coating and bone-coating bonding surfaces decreases with the increase of coating thickness. In addition, stress concentrations for implants with FA coatings are always more than those with HA coatings. In all implants, stress concentration has been observed around the bone crest. 

Keywords

Implant
Hydroxyapatite
Fluoroapatite
Bonding surface
Finite element

Subjects

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  • Receive Date 06 July 2015

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