Lamina barriers are made of cortical bone of heterologous origin produced with an exclusive Tecnoss® process that avoids the ceramization of hydroxyapatite crystals, thus allowing gradual resorption. After a process of superficial decalcification, Lamina soft acquires an elastic consistency, nevertheless maintaining the typical compactness of the bone tissue from which it originates; the margins are soft in order not to cause micro-traumas to the surrounding tissues. Curved soft Lamina has a semi-rigid consistency and should be grafted without hydration, provided that it is previously shaped to fit the defect morphology. Rigid Lamina undergoes a process of superficial semi-decalcification (50% vs Lamina soft) therefore increasing its consistency, typical of the cortical bone tissue.