Faculty of Dental Surgery, Royal College of Surgeons. Int J Paediatr Dent. 1999, 9 (4): 311-314. 10.1046/j.1365-263x.1999.00153.x. Article PubMed Google Scholar Randall RC, Vrijhoef MM, Wilson NH: Efficacy of preformed metal crowns vs. amalgam restorations in primary molars: a ...