Are some people at more risk for developing cavities?

People who have reduced saliva flow due to diseases such a Sjogren Syndrome, dysfunction of their salivary glands, have undergone cancer chemotherapy or radiation, and who smoke are more likely to develop cavities. Saliva is important in fighting cavities because it can rinse away plaque and food debris, and help neutralize acid. People who have limited manual dexterity and have difficulty removing plaque from their teeth may also have a higher risk of forming cavities. Some people have naturally lower oral PH, which makes them more likely to have cavities.