Tooth decay happens when a tooth breaks down. This break down can cause a hole in the tooth that can get bigger and deeper over time. Treatment is needed right away.
To prevent tooth decay:
Brush your teeth and floss every day.
Make and keep all regular check-ups and cleanings with your dentist.
GET HELP RIGHT AWAY IF:
You have a fever over 102° F (38.9° C).
You see redness and puffiness (swelling) of the face, jaw, or neck.
You cannot open your mouth.
You have severe tooth pain not helped by medicine.