Effect of crosslinking density of polymers and chemical structure of amine-containing monomers on the neutralization capacity of dentin adhesives

Dental Materials : Official Publication of the Academy of Dental Materials
Xueping GeJennifer S Laurence

Abstract

Neutralization of the acidic micro-environment at the tooth/material interface is expected to provide enhanced durability for dental composite restorations. The objective of this study is to explore the effect of amine-containing monomer formulations and the crosslinking density of the resultant polymers on the neutralization capacity. The co-monomer system was varied systematically to obtain different proportions of Bisphenol A glycerolate dimethacrylate (BisGMA) and 2-hydroxyethyl methacrylate (HEMA), while maintaining a constant amount of amine-containing methacrylate monomer. A series of amine-containing monomers covering a range of pKa values were examined. Crosslinking density of formed copolymers was controlled by adjusting the weight content of the dimethacrylate monomer BisGMA. Lactic acid (LA) was used as a probe to analyze the effectiveness of the basic polymers to neutralize acid. The neutralization capacity of each amine-containing crosslinked copolymer was characterized by measuring pH as a function of time when the specimens were soaked in 1-mM LA solution, and the results were compared to the control formulations composed solely of BisGMA and HEMA. Polymer surfaces were examined using the methyl orange (MO) assa...Continue Reading

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Citations

Mar 22, 2019·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Paulette SpencerCandan Tamerler
Dec 3, 2020·International Journal of Molecular Sciences·Utkarsh MangalSung-Hwan Choi
May 4, 2021·Journal of the Mechanical Behavior of Biomedical Materials·Rizacan SarikayaAnil Misra
Dec 7, 2019·Dental Materials : Official Publication of the Academy of Dental Materials·Linyong SongPaulette Spencer
Sep 12, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·Linyong SongPaulette Spencer
Feb 11, 2019·ACS Biomaterials Science & Engineering·Gülseren IrmakMenemşe Gümüşderelioǧlu

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