Release of aqueous calcium and phosphate from human dental enamel following administration of self-etching adhesives

Seven self-etching adhesives were studied on an experimental reconstituted human enamel model. The objective was to evaluate the acid dissociation step of the enamel minerals. The self-etching products were applied to the enamel specimens according to the manufacturers' instructions and then ri...

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Bibliographic Details
Published in:Journal of biomaterials science. Polymer ed. 2005-01, Vol.16 (6), p.745-759
Main Authors: Nasr, Karim, Sharrock, Patrick, Grégoire, Geneviève
Format: Article
Language:English
Subjects:
ACID DISSOCIATION
Adhesives - administration & dosage
Apatites - metabolism
CALCIUM
Calcium - analysis
Dental Enamel - chemistry
Dental Enamel - metabolism
Dental Etching
ENAMEL
Humans
HYBRIDIZATION
Hydrogen-Ion Concentration
PHOSPHATE
Phosphates - analysis
SELF-ETCHING ADHESIVE
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Summary:Seven self-etching adhesives were studied on an experimental reconstituted human enamel model. The objective was to evaluate the acid dissociation step of the enamel minerals. The self-etching products were applied to the enamel specimens according to the manufacturers' instructions and then rinsed with distilled water. The aqueous calcium and phosphate released were analysed chemically by atomic absorption and ion chromatography, respectively. Results show widely varying concentrations related to pH, acid concentration and calcium binding capacity. All concentrations are less than reference values obtained with orthophosphoric acid. The effectiveness of self-etchants is discussed in terms of their ability to demineralise human enamel and incorporate the released ions in the subsequent HEMA co-polymer composing the hybrid layer.
ISSN:0920-5063
1568-5624
DOI:10.1163/1568562053992487