Sage Journals: Discover world-class research

Abstract

Mild self-etch adhesives demineralize dentin only partially, leaving hydroxyapatite around collagen within a submicron hybrid layer. We hypothesized that this residual hydroxyapatite may serve as a receptor for chemical interaction with the functional monomer and, subsequently, contribute to adhesive performance in addition to micro-mechanical hybridization. We therefore chemically characterized the adhesive interaction of 3 functional monomers with synthetic hydroxyapatite, using x-ray photoelectron spectroscopy and atomic absorption spectrophotometry. We further characterized their interaction with dentin ultra-morphologically, using transmission electron microscopy. The monomer 10-methacryloxydecyl dihydrogen phosphate (10-MDP) readily adhered to hydroxyapatite. This bond appeared very stable, as confirmed by the low dissolution rate of its calcium salt in water. The bonding potential of 4-methacryloxyethyl trimellitic acid (4-MET) was substantially lower. The monomer 2-methacryloxyethyl phenyl hydrogen phosphate (phenyl-P) and its bond to hydroxyapatite did not appear to be hydrolytically stable. Besides self-etching dentin, specific functional monomers have additional chemical bonding efficacy that is expected to contribute to their adhesive potential to tooth tissue.

Get full access to this article

View all access options for this article.

References

Beamson G, Briggs D (1992). Lineshapes. In: High resolution XPS of organic polymers. The Scienta ESCA 300 Database. Chichester: John Wiley & Sons Ltd., pp. 33–36.

Inoue S, Van Meerbeek B, Vargas M, Yoshida Y, Lambrechts P, Vanherle G (2000). Adhesion mechanism of self-etching adhesives. In: Advanced adhesive dentistry. Proceedings of the 3rd International Kuraray Symposium, Dec. 3–4, 1999, Granada, Spain. Tagami J, Toledano M, Prati CA, editors. Cirimido, Italy: Grafiche Erredue, pp. 131–148.

Inoue S, Vargas MA, Van Meerbeek B, Abe Y, Yoshida Y, Lambrechts P, et al. (2001). Micro-tensile bond strength of eleven modern adhesives to dentin. J Adhes Dent 3:237–246.

Misra DN (1989). Adsorption of 4-methacryloxyethyl trimellitate anhydride (4-META) on hydroxyapatite and its role in composite bonding. J Dent Res 68:42–47.

Nakabayashi N, Saimi Y (1996). Bonding to intact dentin. J Dent Res 75:1706–1715.

Nakabayashi N, Kojima K, Masuhara E (1982). The promotion of adhesion by the infiltration of monomers into tooth substrates. J Biomed Mater Res 16:265–273.

Sano H, Takatsu T, Ciucchi B, Horner JA, Matthews WG, Pashley DH (1995). Nanoleakage: leakage within the hybrid layer. Oper Dent 20:18–25.

Sano H, Yoshikawa T, Pereira PN, Kanemura N, Morigami M, Tagami J, et al. (1999). Long-term durability of dentin bonds made with a self-etching primer, in vivo. J Dent Res 78:906–911.

Tay FR, Pashley DH (2001). Aggressiveness of contemporary self-etching systems. I. Depth of penetration beyond dentin smear layers. Dent Mater 17:296–308.

10.

Van Meerbeek B, Yoshida Y, Lambrechts P, Vanherle G, Duke ES, Eick JD, et al. (1998). A TEM study of two water-based adhesive systems bonded to dry and wet dentin. J Dent Res 77:50–59.

11.

Van Meerbeek B, De Munck J, Yoshida Y, Inoue S, Vargas M, Vijay P, et al. (2003). Buonocore memorial lecture. Adhesion to enamel and dentin: current status and future challenges. Oper Dent 28:215–235.

12.

Yoshida Y, Van Meerbeek B, Nakayama Y, Snauwaert J, Hellemans L, Lambrechts P, et al. (2000). Evidence of chemical bonding at biomaterial-hard tissue interfaces. J Dent Res 79:709–714.

13.

Yoshida Y, Van Meerbeek B, Nakayama Y, Yoshioka M, Snauwaert J, Abe Y, et al. (2001). Adhesion to and decalcification of hydroxyapatite by carboxylic acids. J Dent Res 80:1565–1569.

14.

Yoshioka M, Yoshida Y, Inoue S, Lambrechts P, Vanherle G, Nomura Y, et al. (2001). Adhesion/decalcification mechanisms of acid interactions with human hard tissues. J Biomed Mater Res 59:56–62.

Comparative Study on Adhesive Performance of Functional Monomers

Abstract

Get full access to this article

References