314 Dissolution of zinc oxide-eugenol cement: Y. Makuya and S. Matsuya

and a dissolution process are considered to be related to the fact that the resin-reinforced cement has higher resistance to abrasion under clinical conditions13, even though it released zinc or eugenol more quickly than other zinc oxide-eugenol cements. The resin- reinforced zinc oxide-eugenol cement is an interesting material which we expect to have biological or pharma- cological effects.

REFERENCES

1 Craig RG. Restorative Dental Materials, 8th edn. St Louis: Mosby, 1989: 202.

2 Cotmore JM, Lee NH, Shapiro IM. Respiratory inhibi- tion of isolated rat liver mitochondria by eugenol. Archs OralBioll979; 24: 565-568.

3 Hirano S, Kohsaka T, Satoh R, et al. Study on the eugenol content extracted from zinc oxide eugenol sealer and its cytotoxicities. Jap J Conserv Dent 1988; 31:1231-1237.

4 Saito Y. Effect of root canal filling materials on prolif- eration and functions of osteoblastic cells. Jap J ConservDent 1991;34:993-1008.

5 Wilson AD, Batchelor RF. Zinc oxide-eugenol cements:

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II. Study of erosion and disintegration. J Dent Res 1970; 49: 593-598. Lindqvist L, Otteskog P. Eugenol: liberation from dental materials and effect on human diploid fibroblast cells. ScandJDentRes 1980;88:552-556. Becker RM, Hume WR, Wolinsky LE. Release of eugenol from mixtures of ZOE in vitro. JPedodon 1983; 8: 71- 77. Hume WR. An analysis of the release and the diffusion through dentin of eugenol from zinc oxide-eugenol mixtures. J Dent Res 1984; 83: 881-884. Brauer GM, Simon L, Sangermano L. Improved zinc oxide-eugenol type cements. J Dent Res. 1962; 41: 1096-1102. Jendresen MD, Phillips RW, Swartz ML, Norman RD. A comparative study of four zinc oxide and eugenol formulations as restorative materials. Part I. J Pros Dent 1969; 21: 176-183. Fukazawa M, Matsuya S, Yamane M. The mechanism for erosion of glass-ionomer cements in organic-acid buffer solutions. J Dent Res 1990; 89: 1175-1179. Civjan S, Huget EF, Wolfhard G, Waddell LS. Character- ization of zinc oxide-eugenol cements reinforced with acrylic resin. J Dent Res 1972; 51: 107-114. Jendresen MD, Phillips RW. A comparative study of four zinc oxide and eugenol formulations as restorative materials. Part II. JPros Dent 1969; 21: 300-309.

BOOK REVIEW Lubricating Polymer Surfaces

Yoshito lkada and Yoshikimi Uyama Technomic, 1993, pp. 177, SFr 93, ISBN 1 56676 013 5

The title gives one the anticipation of a book with much promise that has more or less been met. Do not expect a book with an ‘all you ever wanted to know but were atiaid to ask’ concept. This is because the authors cram into a paperback of about 170 pages, a reasonable overview of lubrication as applied to the polymer context. Anything more would be trying to do too much with too little space. Therefore, for example, the survey of lubricated surfaces for medical use is somewhat restrained and the chapters on surface characterization and modification are selected

summaries of established topics treated thoroughly elsewhere. The reader would also probably have to do some mental juxtapositioning to make the latter chapters applicable to biomedical engineering. These limitations aside, the book provides a competent overview that can serve as a handy guide or introduc- tion to the uninitiated or the newcomer and as a review resource for the veteran.

E. Khor

Biomaterials 1994, Vol. 15 No. 4