iu, "New ways of combating demineralization: link between classic and allopathic medicine," ABSTRACT Prevention and allopathic medicine gained attention, since it is possible for dentists to prevent demineralization, using plants and natural substances with well-known efficacy.The purpose of this study was to present new methods for teeth remineralisation.A selection of 10 extracted teeth was made, maintained in physiological serum, with no color fading, decay or demineralization.Demineralisation was induced, with ortho-phosphoric acid (concentration 45 %), for one minute. The probes were visually and with optical coherence tomography (OCT) inspected.The natural product and the bonding with additional nanoparticles of Silver were created and applied on the demineralization zone of the both groups of teeth. Each tooth in the first group had one plain surface demineralised. The second group of teeth had a cavity prepared on one of each tooth's side. The pastes were applied on the demineralised surfaces and in the demineralised cavities for two minutes. After time expired, the pasta applied on the first group of teeth was washed away; the bonding above the second group of teeth was light cured. The probes were again visually and with OCT inspected.An improvement was observed, in remineralising the white marks on plain surfaces and in the created cavities, the OCT being able to detect different levels of remineralisation.The efficacy of natural pasta depends on the time it is applied and the concentration of the different main substances. Also, the type of surface, plain or occlusal facets, may influence the substances' penetration ability-influencing the absorption and the scattering of the substances.The non-invasive specific feature of these products, low costs and safety are strong positive aspects of this method of remineralisation. However, the natural process of remineralisation is a long-lasting one; perfecting the main substances in order to accelerate the process, in addition to several in vivo studies would be necessary to be fulfilled.