Hello, I am concerned that you have an infection when you refer to a hole in the gum. This can indicate an infection draining that made a pathway and created a hole. This will not heal without treating the source of the infection. Sometimes this situation is not painful because pus can drain out of the hole. Antibiotics can calm down the infection, but if a tooth has abscesses more treatment is required such as removal or a root canal with a restoration. Anti-inflammatory medications can help to control discomfort, but this will be a temporary treatment as well. You can rinse and try to improve your daily oral care. Diet and vitamins good for your health helps your body overall. If your bite is causing trauma to your gums then maybe a simple adjustment and smoothing could help solve your immediate situation. Teeth will continue to erupt if there is no opposing tooth to keep the bite stable. Braces or removal would be options yo condider. Broken teeth with sharp edges could damage your gums. Different infections or medical conditions can cause changes in the gum that I can not rule out. Your description makes me concerned that you are in greater risk of an infection. You should look for a clinic and find a dentist to have an exam. Dental problems get larger and more painful if left untreated. You put your entire body at risk with an infection that is spreading. You may need to go to the hospital emergency room if pain becomes severe or extreme swelling occurs. Please try not to delay in making plans for a dental visit.