Can there be some deficiency issue for the cavity? How to stop this to spread or can we do anything about the vmcavity at home other than brushing twice a day ..coz he does only once in the morning and that too very hectic as he doesn't allow us to do properly. Floss is impossible...please suggest which past we can use ...can we use sensodie to stope getting the hole bigger?? He is using mamaearth/ Colgate kids toothpaste. Electronic brushes r good for kids ??as they do not let us do normal brushing?? Pls suggest solution basih on current situation as we can not visit doc now due to Pandemic