Features: - Innovative teeth protector based on a patented silicone polymer providing exceptional adhesion to enamel and dentin without prior etching. - Thanks to this innovative formula, OliNano SEAL remains on the teeth surface for approximately. - 12 months (other available products max. 2-3 months). Advantages: - Nano-particles of fluorapatite and calcium fluoride. - Fluoride release by amino fluorides - 12-month protection. - No etching, no light curing.