For dental sensitivity to cold:
-Use tooth whitening kit trays available at pharmacies and use Milk of Magnesia in the tray, leaving on teeth ½ hour or more daily till better, then 1x/week
Periodontal Disease (To help deep pockets in your gums)
-Xylitol mouth rinse
(1 tsp Xylitol in ~ 1 Tbsp water, held in mouth 10 minutes)
-Slurry of baking soda & peroxide, apply to toothbrush.
Hold toothbrush at 45 degree angle at gum-line and vibrate, moving to new sites