Welcome to the PSI Dental Supply web site. Since 1981 we have made consumable dental products available to dental laboratories and dentists. Bonding products are available at wholesale prices. Check your current prices and compare or click here. Among these products are resin cements (individual syringes or kits), dentin/enamel bonding systems, porcelain repair kits, laboratory refractory investment, porcelain and metal etchants and porcelain silane primer. 