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Multifunctional Poly(alkyl Methacrylate) Films for Dental Care

Multifunctional Poly(alkyl Methacrylate) Films for Dental Care

Birthe V Nielsen, Thomas G Nevell, Eugen Barbu, James R Smith, Gareth D Rees, John Tsibouklis

Biomed Mater. 2011 Feb;6(1):015003.

PMID: 21206001

Abstract:

Towards the evaluation of non-permanent dental coatings for their capacity to impart dental-care benefits, thin films of a homologous series of comb-like poly(alkyl methacrylate)s (ethyl to octadecyl) have been deposited, from aqueous latex formulations, onto dentally relevant substrates. AFM studies have shown that the thickness (40-300 nm) and surface roughness (8-12 nm) of coherent polymer films are influenced by the degree of polymerization and by the length of the pendant chain. Of the polymers under consideration, poly(butyl methacrylate) formed a close-packed film that conferred to dental substrates a high degree of inhibition to acid-mediated erosion (about 27%), as evaluated by released-phosphate determinations. The potential utility of the coatings to act as anti-sensitivity barriers has been evaluated by determining the hydraulic conductance of coated bovine-dentine substrates; single treatments of dentine discs with poly(butyl methacrylate) or with poly(ethyl methacrylate) effected mean respective reductions in fluid flow of about 23% with respect to water-treated controls; repeated applications of the poly(butyl methacrylate) latex led to mean reductions in fluid flow of about 80%. Chromometric measurements have shown that pellicle-coated hydroxyapatite discs treated with poly(butyl methacrylate), poly(hexyl methacrylate) or poly(lauryl methacrylate) exhibit significant resistance to staining by food chromogens.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP9003638-A	Poly(butyl methacrylate), MW 800,000		9003-63-8	Price

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