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Find a Dentist To Evaluate Your Risk Factors For Oral Cancer

Oral and oropharyngeal cancers are malignancies that include the lips, tongue, lining of the cheeks (buccal mucosa), floor of the mouth, gum (gingiva), the area behind the lower wisdom teeth (retromolar trigone), the roof of the mouth (hard and soft palates), the back of mouth and throat (oropharynx), and the sides of the throat (tonsil areas).

Oral and oropharyngeal cancers are most often diagnosed in older adults (average age at diagnosis is between 60 and 63), with over 95% of the oral cancer cases occurring after the age of 45. Men are diagnosed with oral and oropharyngeal cancer twice as often as women. Over the past several decades, the overall number of oral and oropharyngeal cancers has not changed; however, the number of men being diagnosed with the disease is decreasing and the number of women with the disease is increasing.

All forms of tobacco and excessive use of alcohol have been identified as major risks factors for oral and oropharyngeal cancers, and are suspected to account for 75% of all oral and oropharyngeal cancers in the United States. Sun exposure is a risk factor for lip cancer, while smokeless (snuff or spit) tobacco increases the risk for cancers inside the lips and cheek. Other risk factors for oral and oropharyngeal cancer are vitamin A deficiency and Plummer-Vinson Syndrome (a very rare iron deficiency).

The American Cancer Society estimates that 7,800 people will die because of oral or oropharyngeal cancer in the year 2000. Overall, people surviving five years after a diagnosis of oral and oropharyngeal cancer have shown little improvement; half of the people diagnosed with this disease survive five years. Deaths due to oral and oropharyngeal cancer vary greatly with the stage (spread) of the cancer at diagnosis. Oral and oropharyngeal cancers that are detected and treated early, and are localized, have greatly improved survival compared to those that have spread.

Early localized oral and pharyngeal cancers often are not bothersome and therefore go undetected until the cancer has spread. About half of oral and oropharyngeal cancers have spread to the lymph nodes (spread to the neck) at the time of diagnosis or treatment. Three sites within the mouth are high-risk for the development of oral and oropharyngeal cancer: the floor of the mouth, the sides of the tongue, and the soft palate complex (soft palate, inside the retromolar trigone, and tonsil area).

Detection of an oral and oropharyngeal cancer also identifies an individual who is at high risk for developing or having a cancer of the respiratory system and upper digestive tract (larynx, lung, and esophagus).

Warning signs and symptoms of oral and oropharyngeal cancer:

• A mouth sore that does not heal
• A lump or thickened mass in mouth or neck
• A red or white patch in mouth
• A sore throat or feeling that something is caught
• Voice change
• Difficulty chewing or swallowing
• Difficulty moving the jaw or tongue
• Numbness
• Swelling
• Loosening of teeth
• Weight loss

Pain may not be present with early oral and oropharyngeal lesions. Traumatic oral lesions will resolve or greatly improve after the cause of the trauma is removed (such as a sharp tooth or denture). A biopsy, to rule out or confirm a malignancy, is indicated if an oral lesion persists after two weeks. A dentist and/or physician should evaluate all suspicious lesions.

By Denise J. Fedele, DMD, MS

What Is a Mouth Sore or Canker Sore and What Are the Causes?

People often use the terms "canker sores" and "cold sores" interchangeably. While both are very painful, a canker mouth sore is found on the inside of the mouth and is not contagious; cold sores are located on the inside or outside of the mouth and are contagious.

Canker Sores:

These sores are found inside the cheeks, on your tongue or the bottom of your mouth, and sometimes on your gums. They range from the size of a tiny pinhead to a penny. The sores are grayish-white in the center and circled with a red inflammation. Since it's an open mouth sore, it hurts when touched by anything, including saliva. They can burn and itch, too.

Canker sores might be called the "stress sores," because they are caused by different types of stress:

• Emotional stress;
• Physical stress, such as biting your tongue, burning your mouth, or an abrasion from braces or loose dentures; or
• Chemical stress producing changes in your body, perhaps resulting from an illness or change in eating habits (such as medications, or too much of acidic foods such as tomatoes, grapefruit, or lemons).

About one in five people get them. Women in the 20-to-50 year age group get them more often. Once you get them, you're likely to experience them again. However, they usually go away after seven to ten days, although some can be longer-lasting.

An antimicrobial mouth rinse may lessen the irritation. Temporary relief can be provided by over-the-counter topical anesthetics. Pain relief varies with different products. Some medications provide a protective film that physically blocks contact with food and saliva, lessening irritation.

Good oral hygiene and a healthy diet are preventive measures for reducing the frequency of outbreaks.

Cold Sores

Also known as fever blisters, cold sores are caused by the virus herpes simplex. These are painful blisters that usually break out around the lips and sometimes under the nose or chin and normally heal within one week. They are very contagious. The virus stays in the body, causing recurrent lesions prompted from a fever, sunburn, skin abrasions, or stress.

They can be treated by your dentist with the same topical anesthetics to relieve pain and irritation as for canker sores. Prescription antiviral drugs can be effective in reducing viral infections that cause flare-ups.

Additionally, there are new topical medications (ointments) now available that shorten the duration of a breakout, when applied immediately after the cold mouth sore is noticed. All antiviral medications work best in the prodromal or early stage of the lesion. If the wound is open and sore, these medications are of little use as the healing time is still the same.

Be sure to consult with your dentist when any mouth sores do not heal.

By Brian J. Gray, DDS, MAGD, FICO