OBJECTIVE To evaluate, using conventional in vitro procedures, the abrasivity, enamel polishing properties, and stain removal effectiveness of various commercial dentifrices that have a variety of compositions and are marketed for cleaning, whitening, and/or polishing capabilities, and to examine their relationships between stain removal and abrasivity. METHODS The Relative Dentin Abrasivity ...

Resource Description and Access (RDA) is a new standard for describing all types of resources. Columbia University, the University of Chicago, and the University of Illinois at UrbanaChampaign evaluated the guidelines by means of the Dublin Core element set during the U.S. National Libraries RDA Test, held from October to December 2010. This paper speaks to the issues which emerged during the t...

Epidemiological evidence suggests that infection is involved in the etiology of common acute lymphoblastic leukemia, either by stimulating an inappropriate immune response or in the form of a classical transforming agent. In an attempt to elucidate the role that infection is playing in this disease, we used representational difference analysis (RDA) to examine tumor samples for the presence of ...