Oral Cancer Screening

Oral cancer screening is a preventive evaluation conducted by dentists and doctors to detect early signs of oral cancer or precancerous conditions in the mouth. This is a rapid and non-invasive procedure with a visual and manual examination of the oral cavity, and includes the tongue, gums, mucosa of the cheeks and throat. Early detection plays a pivotal role in increasing survival rates, as oral cancer is typically diagnosed at a late stage when treatment options become more complicated.

Oral cancer screening can detect abnormal or suspicious lesions at an early stage before they turn out to be malignant tumors. In fact, with early detection, we can intervene in time, making successful treatment much more likely. Because of increasing tobacco and areca nut use, India has rising oral cancer rates, stressing the need of frequent screening for detecting high-risk patients.

While oral cancer screening can benefit everyone, some individuals should be screened more often:

• Smoker or smokeless tobacco user.
• Heavy alcohol consumers.
• Patients with prior oral cancer or precancerous lesions.
• People with long sun exposure (risk of lip cancer).
• Human Papillomavirus (HPV) infected patients.
• Those with bad dental hygiene and chronic irritation due to poorly fitting dentures.

There are various methods for oral cancer screening, each employing different instruments:

• Visual inspection: The dentist checks the lips, tongue and gums, as well as the soft tissues of the mouth, for unusual lesions, red or white patches or ulcers.
• Physical examination: The dentist would palpate the jaw and neck area to identify any unusual lumps or swelling.
• Toluidine Blue Staining: A special dye stains abnormal tissues.
• Fluorescence Visualization: A blue light distinguishes healthy and abnormal tissues.
• Brush Biopsy (Exfoliative Cytology): An easy and little painful process to extract cells from suspicious areas for lab examination.
• Biopsy: Histopathological examination of tissue biopsy to confirm malignancy.

Here are the various steps which form the process:

• Evaluation of patient history: The dentist questions regarding smoking, alcohol intake, family history, and past oral health problems.
• Oral inspection – The dentist looks for abnormal areas in the mouth during the examination under bright light.
• Physical examination – The dentist checks for lumps or swelling by gently palpating the face, jaw and neck.
• Diagnostic tools use – Further tests are performed as needed (e.g., toluidine blue staining, fluorescence imaging).
• Biopsy referral – When suspicious lesions are observed, a biopsy is ordered.

• Early detection: Detects cancerous or precancerous lesions before they present with symptoms.
• Improved survival rates: Early-directed treatment of oral cancer is easier to cure.
• Fast and non-invasive: Takes a couple of minutes and is painless.
• Enhances oral health: Facilitates the detection of different oral hygiene problems including gum diseases.
• Cost efficient – The early detection provides options, therefore, decreasing the expense of advanced treatments.

• Gentle & safe: No surgical procedure is needed as in the cases of cancer treatment.
• Slows disease progression: Early detection helps to prevent cancer spread.
• Promotes frequent checkups: Makes patients more mindful of their oral health.
• Cost effective: Most dental clinics offer at an affordable price.

An oral cancer screening is just one brief appointment taking 5-10 minutes. But it needs to be done every year as part of routine dental visits, especially in people who are at high risk. If nothing is out of the ordinary, just basic tests will do. If anyone finds suspicious lesions, follow-ups and further diagnostic tests might be needed.

Oral cancer screenings are a standard part of a dental visit and only take 5-10 minutes. If any further investigations are needed, fluorescence imaging or a biopsy, the screening time could be with 30 minutes or even more.

In India, the cost of oral cancer screening varies depending on the type of screening and the clinic location:

• Basic visual and physical examination: ₹300 – ₹1,000
• Screening tests (toluidine blue staining, fluorescence tests): ₹1,500 – ₹5,000
• Biopsy of suspicious lesions: ₹3,000 – ₹10,000.
• There may be free or subsidized screenings in government hospitals and NGOs, especially in high-risk areas.

Oral cancer examination is a safe non-invasive procedure. But there are small things that are a bit off:

• False positives: Benign lesions can sometimes look suspicious.
• False negatives: Early stage cancer lesions may be missed.
• Need for further testing: If abnormal tissue is discovered, a biopsy is mandated to ascertain malignancy.

Here are numerous benefits of oral cancer screening, but it does have a few limitations:

• Not a confirmatory test: It identifies only suspicious areas but does not diagnose for cancer.
• Potential stress for patients: A positive screening can be anxiety-provoking, even when additional testing shows it is benign.
• Limited accuracy: Because some lesions are not detectable in the early stages, other diagnostic methods may be required.

Oral cancer screening is a key preventive measure, but there are other strategies:

• Regular self-examination: looking for unusual lumps, sores or patches in the mouth.
• Blood tests: Some biomarkers have been suggested to aid in oral cancer detection, but are not yet a routine diagnostic tool.
• Imaging study (MRI, CT scans): Utilized when a more in-depth inspection of tissue is necessary.
• Salivary diagnostics: New technology emerging to detect cancer biomarkers in saliva samples.

Post-screening care is dictated by the results:

1. If no abnormalities are revealed:

• Maintain routine dental appointments and self-exams.

2. If suspicious lesions are found:

• Follow up with a biopsy or further testing, as recommended by the dentist.
• Practice good oral hygiene: Brush twice a day, floss, and use an antiseptic mouthwash.
• Steer clear of risk factors: Quit smoking, curb alcohol, and eat a balanced diet high in antioxidants.
• Schedule regular screenings: Annual checkups are important for early detection, especially for high-risk individuals.