Electronic Theses and Dissertations

Identifier

64

Date

2010

Date of Award

4-29-2010

Document Type

Thesis

Degree Name

Master of Science

Major

Biomedical Engineering

Committee Chair

Joel D Bumgardner

Committee Member

Warren Haggard

Committee Member

Tomoko Fujiwara

Abstract

Dental implants are widely used for the replacement of missing teeth and have a high success rate, but further enhancement of osseointegration is desired. This enhancement may be achieved through improved vascularization of surrounding bone. The aim of this investigation was to determine the potential of chitosan coatings on titanium to deliver vascular endothelial growth factor (VEGF) to stimulate blood vessel formation and influence the growth and matrix formation of osteoblastic cells in efforts to enhance osseointegration. Chitosan was chemically bonded to titanium via a silane-glutaraldehyde process and loaded with VEGF. The protein, which was released over three days, improved cell survival of HUVECs on the chitosan coatings. Saos-2 bone cell cultures were evaluated for cell growth, expression of ALP, and secretion of osteocalcin and deposition of calcium. VEGF loaded coatings extended the proliferation period of the cells but did not further enhance matrix production in comparison to unloaded chitosan coatings.

Comments

Data is provided by the student.

Library Comment

dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.

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