‘DENTAL PRODUCTS REPORTS’, one of USA’s famous magazines wrote user’s comments of RAYSCAN-α. Dr. Brien Hsu and his assistant Teresa Munoz(RDA) emphasized the convenience and superiority of RAYSCAN-α.
http://www.dentalproductsreport.com/dental/article/products-practice-samsung%E2%80%99s-rayscan-%E2%80%94-expert
View above link for more information.