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Effect of abietic acid and poly(methyl methacrylate) on the dissolution process of zinc oxide-eugenol cement
1Department of Conservative Dentistry II, Faculty of Dentistry, Kyushu University, Fukuoka, Japan.
Biomaterials
|March 1, 1994
Abstract:
The effects of abietic acid and poly(methyl methacrylate) (PMMA) on the dissolution process of zinc oxide-eugenol cement were studied in 0.01 M acetic acid buffer solution (pH 4). Abietic acid markedly reduced the elution of zinc from the cement, because of the matrix stabilization by the reaction between the acid and zinc oxide. The dissolution process of the cement without additives was controlled by surface reaction. With the cement containing abietic acid or PMMA, the diffusion of eluted species through the cement matrix participated in the dissolution process.