The best way to avoid problems with your teeth and gums is by maintaining a good daily oral hygiene routine, healthy diet and avoid smoking and alcohol.
Below are a selection of videos and links to help you towards better dental hygiene and oral health:
Brush 2 times per day for 2 mins on of teeth times being last thing before sleeping , brush all aspects of teeth and angle tooth. Spit do not rinse out tooth paste
Healthy diet for your teeth. https://www.dentalhealth.org/diet-and-my-teeth
To avoid tooth decay it is important to reduce sugar and simple carbohydrates in your diet as this is what bacteria feed on to produce acid which leads to holes in you teeth.
Drinking alcohol increases the risk of mouth cancer. Alcoholic drinks are also acidic and high in sugar which leads to toothwear, sensitivity and caries.