Hello,Pain in teeth
and gums may be due to clenching habit of teeth.
I would advice you to get orthodontic treatment done to correct your malaligned teeth.
Obturators has to be placed in mouth while sleeping to prevent teeth clenching habit.
Use densitising toothpaste and soft bristled toothbrush to clean your teeth.
Intake of citrus fruits has to be limited.
Hope this helps.