Hi Stitchlady,
Check out getting a triple antiobiotic ointment for your burns. This is not the same as Sensotyne toothpaste. I would discontinue putting the toothpaste and change to the ointment.
Keep applying the ointment and wrapping lightly with bandage gauze, rinsing and changing daily. Keep applying the ointment throughout the day to keep it well hydrated and covered with the ointment. The ointment will help the burn to heal from within and help to avoid any scars from forming.
If you have a Dollar Store type store they should have it, if not it is well worth the expense from either a drug store or the grocery.
Good luck with your healing and keep us updated.
Pam M