Diabetes and gum disease have both been proven to worsen each other. If your mother has both problems it is best to consult with a diabetologist and a dentist (periodontist) to get the best possible treatment for both. Having clean teeth and healthy gums has been proven to help improve the blood
sugar control and provide overall better health.
Next Steps
definitely visit your dentist and also get a consultation from a gum specialist (periodontist)