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January 24, 2010 | History

Prospective clinical and in vitro studies to measure dental composite resin biodegradation 1 edition

Prospective clinical and in vitro studies to measure dental composite ...
Fayaaz Jaffer

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Prospective clinical and in vitro studies to measure dental composite resin biodegradation.

Published 2005 .
Written in English.

About the Book

Composite biodegradation by salivary enzymes has been demonstrated; however, the levels of degradation by-products that may be generated in clinically relevant settings are unknown. Z250 class V restorations prepared in extracted teeth were incubated in D-PBS or human salivary esterases over 30 days. Bishydroxypropoxyphenylpropane release was continuous reaching a constant level after 7 days. Extensive changes in Z250 surface topography were seen post-incubation in HSDE versus controls.20 healthy patients requiring ≥1 class V Z250 restorations consented to participate in a pilot study to measure composite degradation in vivo. Whole saliva was collected from 9 patients, while 11 patients performed a two-minute saline rinse. Degradation products (∼4-10 ppm) were isolated in the immediate post-restoration collections of four patients in the rinse group. Product concentrations in this range have been shown to affect cell function. Hence, it becomes relevant to further investigate composite biodegradation and its potential local and systemic effects.

Edition Notes

Source: Masters Abstracts International, Volume: 44-02, page: 0808.

Thesis (M.Sc.)--University of Toronto, 2005.

Electronic version licensed for access by U. of T. users.

GERSTEIN MICROTEXT copy on microfiche (3 microfiches).

The Physical Object

186 leaves.
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History Created December 11, 2009 · 2 revisions Download catalog record: RDF / JSON

January 24, 2010 Edited by WorkBot add more information to works
December 11, 2009 Created by WorkBot add works page