“How many cavities are normal?”

Unfortunately, there isn't a good answer to this. It all depends on your home care and your diet. The more carbonated beverages (including carbonated water) as well as white bread and sweets will cause you to have more decay on your teeth. Also, some medications will cause dry mouth which also contributes to decay.

Valeria Smrecek, RDA

All cavities are disease. Having no cavities is normal