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This headline is overly sensational — this treatment does not apply for what most people consider cavities (i.e. caries, bacterial decay). It only applies for the very early stage caries process where enamel is just beginning to become demineralized. Tooth enamel is essentially a matrix that is hardened by mineralization. Caries initially demineralize the enamel, but as they progress they destroy the enamel as well. Once that enamel is gone, there is nothing left to mineralize. You can throw as much calcium, phosphate, electricity, etc at it and you won’t end up with any more enamel. The decay has to be removed and filled with something. This proposed treatment only works for the very initial stages of demineralization, which are referred to as white spot lesions, since demineralization causes the enamel to become opaque. The current conservative treatment for white spot lesions is to be judicious with cleaning and possibly apply some additional fluoride, as the tooth simply needs to be remineralized. The researchers are claiming to be able to accelerate that remineralization, which is great, but is very, very far from saying that patients won't need fillings. Source: I’m a 2nd year dental student. Edit: formatting |
And I'll point out that my current dentist is the only one I've ever had (or known of) who actually bothers to rigorously teach his patients how to clean their teeth well. Most apparently don't believe this is possible or worth their time. Obviously that's not going to take with every patient, but it's really quite amazing the difference between thinking you're doing what needs done (yet having the hygienist grumble all the same), and actually getting the plaque off every time. Put another way, diligence != skill when it comes to dental hygiene.