The range of Shofu luting cements contains the patented Hy-Agent additive which consists of tannic acid, zinc fluoride and strontium fluoride, that helps to improve its physical properties and reduce decalcification of enamel and dentin. The most beneficial effect is that it helps to seal the dentinal tubules to prevent irritation to the pulp. An enhanced glass ionomer luting cement designed to provide an excellent marginal seal and minimize postoperative sensitivity for permanent cementation of cast metal and porcelain fused to metal crown and bridge restorations as well as metal orthodontic appliances.