Analysis of chemical interaction of 4-MET with hydroxyapatite using XPS.
Dent Mater J
; 25(4): 645-9, 2006 Dec.
Article
en En
| MEDLINE
| ID: mdl-17338295
ABSTRACT
Each dental adhesive contains a specific functional monomer that determines its actual adhesive performance to tooth tissue. 4-methacryloxyethyl trimellitic acid (4-MET) is well-known as one of the functional monomers mostly available and consequently widely used in commercial adhesives. We therefore characterized the chemical interaction of 4-MET with hydroxyapatite (HAp) using X-ray Photoelectron Spectroscopy (XPS). XPS revealed that the peak representing -COO- of 4-MET shifted to a lower binding energy, when 4-MET was adsorbed onto HAp. Deconvolution of this shifted peak disclosed two components with a peak representing unreacted carboxyl groups and ester groups, and a peak suggesting chemical bonding of other carboxyl groups to Ca of HAp. XPS spectra of HAp treated with 4-MET also disclosed the surface to be enriched in calcium and decreased in phosphorus, indicating that phosphorus was extracted at a relatively higher rate than calcium. It can thus be concluded that true chemical bonding of 4-MET with calcium present in HAp occurred, as it was proven using XPS.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Ácidos Tricarboxílicos
/
Recubrimiento Dental Adhesivo
/
Durapatita
/
Cementos de Resina
/
Metacrilatos
Idioma:
En
Revista:
Dent Mater J
Año:
2006
Tipo del documento:
Article
País de afiliación:
Japón