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The influence of a flexible coating on the bone stress around dental implants
Author(s) -
MEIJER G.J.,
STARMANS F.J.M.,
PUTTER C.,
BLITTERSWIJK C.A.
Publication year - 1995
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1995.tb00243.x
Subject(s) - materials science , coating , ultimate tensile strength , stress (linguistics) , composite material , implant , medicine , surgery , philosophy , linguistics
summary The influence of a three‐layered flexible coating of Polyactive® on bone stress distribution was investigated by three‐dimensional finite element models of mandibular bone, in which a titanium implant (coated or uncoated) was located. Poly‐active® is a system of poly(ethylene oxide) poly(butylene terephthalate) segmented co‐polymers with bone‐bonding capacity. In the case of sagittal and transversal loading, the use of a Polyactive® coating reduced both the minimum principal stress in the bone and the compressive radial stress at the bone‐implant interface. However, it raised the maximum principal and the tensile radial stress. In the case of vertical loading, the application of a flexible coating reduced the compressive radial stress at the bone‐implant interface around the neck of the implant by a factor of 6.6 and the tensile radial stress by a factor of 3.6. Variations in composition and thickness of the coating did not affect the results significantly.