Do validation of dental implant systems through a review of literature supplied by system manufacturers?
On the basis of the literature supplied by the manufacturers, only one implant system demonstrated scientifically valid long-term success.
Iris melanomas exhibited a wide range in acoustic backscatter properties. Whereas characteristics such as vascularity and necrosis might contribute to this, in the two cases examined here, backscatter characteristics could be largely accounted for by melanocyte distribution. A better understanding of the relationship of histology to noninvasive ultrasound data will enhance the diagnostic utility of this technique.