G.I Lute is used as an adhesive in orthodontic works; it is made up of radiopaque fine silicate glass-powder and bonds which provides a tight seal between the internal tooth and the surrounding environment. It acts as a sealant, allowing the tooth to remain protected. Fill and repair the class III, class V cavities and wedge shaped defects, Caries and linear repair, fixation of crown, bridges and metal orthodontic brackets. High compressive strength, low coefficient of expansion, good marginal seal, stable in oral cavity, insoluble, non-polluting, non-irritating, sufficient work time.