Ask a Dentist: Why Is an Oral Cancer Screening Important?

Oral Cancer Screening St. George, UT

Many dentists use routine cleanings or checkups as an opportunity to offer an oral cancer screening to their patients. This quick and painless check may be something of a mystery to many dental patients who do not know how the exam works or how important it can be. 

What is oral cancer?

This is a blanket term for cancers of the mouth. As with other cancers, oral cancers develop when DNA mutates and makes the cells divide and grow when they should have died and been replaced. Cancer may develop on the gums, cheeks, tongue, throat, or lips. Oral cancer sometimes also develops on the roof of the mouth or on the floor of the mouth, under the tongue. An individual cannot count on seeing evidence of tumors or lesions until the cancer is fairly advanced. 

While anyone is at some risk of getting oral cancer, the risks are higher for certain groups. A history of tobacco use, including smokeless tobacco, or a history of heavy alcohol use increases the risk. Long-term sun exposure also raises the risk of lip cancer, while a history of any oral cancer leads to higher odds of cancer reemerging. Anyone with one or more of these risk factors is likely to benefit from regular screenings.

Past exposure to the human papilloma virus may also be a risk factor, though medical scientists are not certain if there is a relationship. The Mayo Clinic reports a substantial increase in the incidence of mouth and throat cancer in recent years and lists HPV exposure as one possible explanation. 

How does screening help?

Briefly, a screening can reveal oral cancer at an early stage. This means the cancer is more likely to be survivable. Early detection means that treatment could be less radical. As early detection and treatment are so important, patients with oral cancer risk factors described above are advised to get screened regularly. Oral cancer produces certain symptoms that cannot be ignored:

  • Pain or difficulty when swallowing
  • Mouth or ear pain
  • A mouth or lip sore that does not go away
  • A growth or lump anywhere in the mouth
  • White or red patches in the mouth

Anyone experiencing one or more of those symptoms should contact their doctor or dentist to arrange an exam.

The oral cancer screening process

Oral cancer screenings are usually quick and always painless. The dentist examines the patient's mouth looking for lesions, red spots, and swelling that should not be there. The dentist may also check the neck for lumps. Some oral cancer screenings use a light wand to illuminate the mouth and highlight lesions. If there is evidence of a problem, the dentist may want to do a biopsy. This requires taking a tissue sample and analyzing it. 


A routine oral cancer screening can help medical professionals identify potential tumors early, which is particularly valuable for those individuals at elevated risk. These cancers may be growing in frequency. Screenings are simple, painless, and readily available. 

Request an appointment here: or call About Dental Care at (435) 359-0147 for an appointment in our St. George office.

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