SURFACE ENAMEL REPAIR
Early in vitro studies showed the reparative effect of SANGI's nano<mHAP> on microscopically damaged tooth surfaces. Tests were carried out using sound extracted human teeth, etched with acid to create artificial surface roughening, then brushed with or immersed in a solution of nano<mHAP>, or for comparison immersed in artificial saliva. Attachment of bacteria to the samples was also assessed. Results evaluated by scanning or field emission scanning electron microscopy (SEM, FE-SEM),1,2 showed that nano<mHAP> fills and repairs microscopic surface deficits, restoring the enamel almost to its original smoothness, and that this restoration of smoothness reduces bacterial attachment, thereby helping to protect against plaque.3
![](https://www.sangi-eu.com/media/8a/fc/08/1603267767/enamel%20surface%20I_EN.png)
![](https://www.sangi-eu.com/media/9c/2a/d4/1603267767/enamel%20surface%20II_EN.png)
![](https://www.sangi-eu.com/media/68/5b/e5/1603359177/surface%20smoothness_EN.png)
1.T.Ohashi et al, Remineralization of Artificial Caries Lesions by Hydroxyapatite, J Dent Hlth 41(2): 214-223, 1991 (Japanese language with English abstract)
2. K.Nishimura et al, Demineralized Enamel Surface Microstructure after Brushing Using Toothpaste Containing Medical Hydroxyapatite under FE-SEM Observation, J Jpn Stomatol Soc 48(3):199-210, 1999 (Japanese language with English abstract)
3. M.Nishio et al, A New Enamel Restoring Agent for Use After PMTC, J Dent Res 83:1920, Honolulu Abstracts 2004