Oral Cancer Screening: Why You Should Ask at Checkups

Last updated: October 1, 2026

An oral cancer screening looks for mouth changes that may need further evaluation, such as a sore or patch that persists. Tell us about any change you have noticed, even if it does not hurt.

Is oral cancer screening included in every dental checkup?

No, you should not assume that every dental checkup includes an oral cancer screening. At Bajars Dental, screening is a standard part of the dental examination, and you can ask our team to confirm what your visit will include.

What did the 2024 study find about dentists’ screening practices?

A 2024 cross-sectional survey, “Investigate how Frequently Dental Professionals Conduct Oral Cancer Screenings During Routine Dental Check-Ups and the Methods they Use” by Kumararama and colleagues, asked dental professionals about their screening practices. Its findings describe the professionals surveyed, not a measured rate for dentists in the United States or San Diego.

The survey reported the following findings:

The findings show variation in screening frequency and methods. They do not mean that every patient needs an additional device or test: a careful clinical examination remains central to evaluating the mouth.

What should you ask before your appointment?

Ask, “Will my dental examination include an oral cancer screening, and should I mention any changes I have noticed?” Our oral cancer screening service includes an examination of the oral cavity and nearby regions. If a sore or patch prompted your visit, tell our team where it is and whether it has persisted or changed.

What does a dentist check during an oral cancer screening?

A dentist checks the mouth and nearby regions for changes that may need a closer look, including persistent sores and white or red patches.

The dentist may look at the lips, gums, cheeks, tongue, and the floor and roof of the mouth, and may feel for unusual areas. Mayo Clinic’s oral cancer screening guidance also notes that a dentist may check the throat and neck for lumps. An examination of the mouth and nearby regions does not rule out every throat cancer.

Can oral cancer cause a painless sore or patch?

Yes. A concerning change may be flat or painless, and a patient may not have noticed a small sore before an examination. Most spots are harmless or temporary, but appearance and lack of pain cannot reliably tell you which changes need further testing. Our guide to pre-cancerous oral conditions explains why changes in the mouth deserve an individual assessment.

Does a visual exam diagnose cancer?

No. A visual exam identifies areas to evaluate; it does not diagnose cancer. The National Cancer Institute’s patient guidance on oral cavity screening explains that an examiner looks for changes such as abnormal white or red patches, which may require further evaluation. A spot that looks ordinary can still warrant attention if it persists or changes.

Who should ask for an oral cancer screening?

Adults attending routine dental checkups can ask whether their examination includes an oral cancer screening, even without symptoms. Anyone with a persistent sore, a white or red patch, or an unusual growth should point out the change. Risk factors can inform the conversation, but having a risk factor is not a prerequisite for raising a concern.

Should you ask even if you have no symptoms?

Yes. Screening is an examination for concerning changes in someone who may feel well. Ask what the dentist examines and whether anything needs monitoring. A screening visit can support earlier evaluation, but it cannot guarantee early detection or prevent oral cancer.

Which changes should you mention to your dentist?

Mention a sore that does not go away, white or red patches in the mouth, or an abnormal growth – particularly if a change is worsening. Tell your dentist about tobacco use and heavy alcohol use when discussing your risk. Your observations matter even if none of those risk factors applies to you.

How often should you discuss screening with your dentist?

Discuss oral cancer screening when you plan a routine dental examination. Report a persistent or worsening sore or patch before your next checkup; the right follow-up depends on the findings and your individual risk.

Ask whether the examination addressed any area you are worried about and whether your history changes what follow-up makes sense. The review “Oral Cancer Screening: Past, Present, and Future” discusses opportunities for earlier detection while noting limits in the evidence that dental-practice screening improves outcomes. That uncertainty is a reason for an informed conversation, not a reason to ignore a persistent change.

Should you wait for your next checkup if a sore persists?

No. Contact our team for an evaluation if a sore or patch persists or worsens instead of waiting for the next planned visit. Explain what you noticed, where it is, and how it has changed so the dentist can decide what examination or follow-up is appropriate.

What happens if your dentist finds a suspicious spot?

We assess the spot’s appearance and ask how long it has been present or whether it has changed. Depending on the findings, we may arrange a repeat examination, recommend a biopsy, or refer you to a specialist.

Will you need a follow-up visit or a brush test?

The next step depends on the spot. In clinical practice, whether a change persists, progresses, or looks concerning helps determine whether observation, a repeat examination, or further testing is appropriate. Our approach may include a repeat check and, when appropriate, a brush test. For more on the evaluation process, see our guide to oral lesion testing.

Brush testing is not required for every spot. American Dental Association guidance reaffirmed in 2026 advises against using brush cytology to decide whether an adult with abnormal oral tissue needs a biopsy or referral. It describes a limited role for cytology when biopsy is not feasible, advisable, or indicated.

Does an abnormal result mean you have cancer?

No. An abnormal or positive brush result needs confirmation through histologic examination of tissue obtained by incisional biopsy. It does not make surgical removal automatic. The dentist will explain the finding and whether biopsy or specialist evaluation is the appropriate next step.

How is a brush test different from a biopsy?

A brush test collects cells from the surface of a spot for laboratory analysis; an incisional biopsy removes tissue so its structure can be examined under a microscope. A brush result can inform an evaluation but cannot replace a tissue diagnosis when biopsy is indicated. The dentist chooses the next step based on the lesion and clinical findings.

A negative brush result does not rule out disease if an abnormal area persists or progresses. The dentist may recommend a biopsy or arrange specialist evaluation rather than rely on a brush result. Lights, stains, and other adjuncts likewise do not replace a clinical examination or a needed biopsy.

Which test can confirm an oral cancer diagnosis?

A tissue biopsy followed by histologic examination can confirm the diagnosis. The dentist can explain why a particular area needs tissue testing and what a referral or biopsy would involve. Our overview of mouth cancer screening at the dentist offers more context for the examination that comes before that decision.

Are there risks or limits to oral cancer screening?

A routine visual oral examination is noninvasive, but screening has limits: an examination can miss disease, and a harmless change can lead to additional evaluation. A brush test or biopsy is a separate step with its own considerations. Tell your dentist about painful areas, bleeding concerns, and questions about testing before deciding on follow-up.

Can screening miss a lesion or lead to unnecessary testing?

Yes. A normal-looking examination does not guarantee that disease is absent, while a suspicious-looking area may prove harmless. Brush cytology can also produce a false-positive result, which is why it should not determine the need for biopsy on its own. Continue to report a spot that persists or changes, regardless of an earlier examination or brush result.

Who should discuss examination or test concerns with a dentist?

Anyone with a painful area, bleeding concerns, or questions about a recommended test should discuss those circumstances with their own clinician. There is no general reason for adults to avoid a visual oral examination. A brush test may cause brief discomfort or minor bleeding; if a biopsy is recommended, ask about that separate procedure’s risks and how the result will guide care.

Frequently Asked Questions

Do I need to do anything to prepare for an oral cancer screening?

No special preparation is required for a standard oral cancer screening. Mayo Clinic says dentists typically perform the exam during a routine dental appointment. Tell your dentist about any mouth changes you have noticed so they can pay attention to those areas and discuss whether follow-up is needed.

How long does an oral cancer screening take?

An oral cancer screening generally takes less than five minutes, according to Cleveland Clinic. The clinician may look for unusual areas inside your mouth and feel for lumps. If something needs closer evaluation, the clinician will discuss what to do next; screening itself does not establish a cancer diagnosis.

Can a doctor do an oral cancer screening, or only a dentist?

Both dentists and medical doctors can check the oral cavity during a routine visit, according to the National Cancer Institute. If you notice a persistent mouth change, mention it to whichever clinician you see. They can examine the area and advise whether you need further evaluation rather than waiting for a dental appointment.

What do leukoplakia and erythroplakia mean on an oral screening report?

Leukoplakia is an abnormal white patch of cells, while erythroplakia is an abnormal red patch of cells, according to the National Cancer Institute. These terms describe findings, not a cancer diagnosis. Such lesions may become cancerous, so ask your clinician what evaluation or follow-up the particular patch needs.

Can a dentist photograph a spot in my mouth to track it?

Yes. A clinician may photograph an abnormal area to monitor it, according to Cleveland Clinic. A photo documents what the area looks like but cannot diagnose cancer. If the spot persists or progresses, ask whether you need another examination, a biopsy, or a specialist referral.

Why isn’t oral cancer screening recommended as a nationwide screening program?

Most national organizations have not recommended population-based oral cancer screening because evidence that it reduces oral cancer deaths is insufficient, according to a review in the Journal of Dental Research. This does not mean you should ignore a persistent mouth change. Ask a clinician to evaluate it, and discuss what your routine dental examination includes.

How can you request oral cancer screening at a San Diego dental visit?

At a San Diego visit, ask whether your examination includes a check of the mouth and nearby regions for suspicious changes. Point out any persistent sore, white or red patch, or growth, even if it does not hurt. Before leaving, ask what the findings mean and whether you need a repeat examination, testing, or referral.

What should you ask before you leave the appointment?

Ask whether the dentist found anything to monitor, what change would warrant another call, and whether a follow-up is planned. If a spot needs further evaluation, ask which step is recommended and what that step can – and cannot – establish. Requesting screening supports timely evaluation without promising that every cancer will be found early.

If you would like to discuss oral cancer screening or have noticed a persistent change in your mouth, contact Bajars Dental in San Diego to arrange a consultation. Our team can examine the area, explain the findings, and help you understand the next step.

This article is general information and is not medical advice. Talk to a licensed clinician about your own situation before making a treatment decision.