A student who wishes to treat diseases of the mouth may wish to study dentistry. Dentistry studies how to keep the teeth, gums, and other parts of the mouth healthy and how these parts interact with the body.

Certificate programs, which can be earned in about a year, consist of academic classes that are offered at different skill and ability levels. Undergraduate as well as graduate students, depending on their field of study, may obtain certificates.

Part-time learning allows one to obtain a degree or qualification even if one cannot attend school on a full-time basis. One can learn at one's own pace, gradually accumulating credits that count towards a final qualification.