What type of filling? Best practice in dental restorations
B. L. Chadwick, P. Dummer, F. D. Dunstan, A. Gilmour, R. J. Jones, C. J. Phillips, J. Rees, S. Richmond, J. Stevens, and E. T. Treasure
Qual Health Care. 1999 September; 8(3): 202–207. PMCID: PMC2483650