He states that on an average an individual can visit the dentist every six months with little risk of cavities and gum disease. On the other hand however, people who are in the high risk group might need to visit every three months. The high risk group includes pregnant women, smokers, and individuals with weak immune system, oral cancer or diabetes. Moreover, Dr. Spennato states that visiting the dentist on a regular basis is also vital because certain types of medical conditions have indications that can appear in the mouth. Apart from all these one visit a dentist if any one of the below mentioned situation arise such as: