[Relative abrasion of toothpastes--a toothpaste for everyone]

Since our last publication in this Journal in February 1988, many new dentifrices have appeared on the market, prompting us to revise our scale of relative abrasion for the most current ones. This relative abrasion scale is determined by weight loss of mechanically brushed specimens (methyl methacrylate) with a slurry from each dentifrice.