My teeth were never shiny before, it came from the oil pulling (which I am in love with!) that amazingly melted all the buildup off them ...but I should have left well enough alone and stopped trying to polish them - maybe baking soda is enamel safe butttt when combined with the rotary toothbrush and me foolishly concentrating on that one poor tooth too, maybe my enamel was a gonner?! I am so scared because for just a few days I actually felt proud of my teeth that they looked so sparkly - now they're duller than before and that one tooth is even worse, and I'm embarrassed plus worried about the health of my teeth (if I've taken off the enamel). Thank you, grz for taking the time to reply - and annnnyone's input is gratefully welcomed!!!