Super old post.
Hope u found help .......
Have you looked in to the cure tooth decay book by ramiel nagel? Good info. T
There's also a Facebook page associated with the book if u search on Facebook for cure tooth decay.
Most times too the decay is a deficiency within the body. The body needs certain nutrients and if it's not getting it then it pulls from teeth.
If u clean up the diet with paleo diet or such and add in fermented cod liver oil (green pastures is the best) and good probiotics (Klaire labs is best imho and u can get on amazon) and there's STILL decay then it's too much toxins in body. In which case look in to dry skin brushing and cleansing of organs.
Teeth need calcium and phosphorus to heal.
We do probtx, fclo, rinse with water after each meal or at least sugar foods like fruit, put lugols 2% iodine on cavity every night (one drop on toothbrush but be warned it can stain teeth temporarily yellow/orange. Baking soda eliminates) and oil pull with coconut oil nightly, also vit d/k2 drops from Thorne and cell salts swished three times daily. Oh and I make a paste with coconut oil, probiotic, diatomeaceous earth to shove in cavity at night.
Can also look in to xylitol daily.
Diet change is imperative.
Also get the book!
REMEMBER THAT TEETH HEALING IS A SLOW PROCESS. IT TOOK ME 3.5 months to heal my small cavities totally. It takes longer for bigger "hole" type cavities.