Cheek Biting: Causes, Risks, and Effective Ways to Stop the Habit

Accidentally biting your cheek is a common, painful experience, but if it happens frequently, it may indicate an underlying dental or psychological issue. While occasional bites are usually harmless, chronic biting—known as morsicatio buccarum—requires attention to prevent long-term tissue damage and address the root cause.

Why Does Cheek Biting Happen?

Cheek biting generally stems from either accidental distraction or repetitive, compulsive behavior. Common triggers include:

• Lack of Attention: Being distracted while reading or watching TV during meals can lead to accidental bites.
• Accidental Biting: Eating too fast, talking while chewing, or injuries from accidents or fights can cause you to bite your cheek.
• Dental Issues: Tooth deflection in the dental arch, such as wisdom teeth angled toward the cheek, or poorly constructed dental crowns can create sharp edges that repeatedly catch the cheek. Clinical Note: Persistent trauma in the same location can lead to hyperkeratosis, where the tissue becomes thickened and white in appearance.
• Stress and Anxiety: Similar to nail-biting, many people chew their inner cheeks as a subconscious reaction to emotional tension or depression.
• Body-Focused Repetitive Behavior (BFRB): Chronic, compulsive biting is classified as a BFRB, where the individual may not even realize they are performing the action.

Potential Complications

Occasional, accidental bites can result in canker sores, but otherwise, they are not a cause for significant concern. However, chronic biting can lead to persistent redness, painful sores, and tears in the oral mucosa. Red Flag: If a sore does not show signs of healing within 14 days, it is essential to have it evaluated by a dentist to rule out other oral pathologies, such as thickened and white in appearance tissue. With BFRB-related biting, individuals may also experience increased guilt, shame, or hopelessness, often leading them to shy away from social activities.

How to Stop the Habit

Treatment depends on whether the cause is physical or psychological:

• Dental Intervention: If a tooth or restoration is the culprit, your dentist may recommend orthodontic treatment or an extraction to correct your bite.
• Behavioral Strategies: If the habit is stress-related, try mindfulness, breathwork, or relaxation exercises.
• Replacement Habits: Replacing the urge to bite with a healthier alternative, such as chewing sugar-free gum, can be highly effective.
• Professional Support: If the biting is related to a BFRB, keeping a journal to track triggers and speaking with a psychologist can help you understand and manage the emotions driving the behavior.

Frequently Asked Questions

When should I see a dentist about cheek biting?

If you find yourself regularly biting the inside of your mouth while chewing or talking, it is an excellent time to schedule an appointment. Your dentist can determine if your teeth are causing the trauma or if you need a referral for further support.

Is chronic cheek biting a mental health concern?

Yes, chronic, compulsive cheek biting is considered a BFRB. It is often linked to stress, anxiety, or depression, and professional guidance from a therapist can be very beneficial.

Can I treat cheek bites at home?

Occasional, minor cheek bites usually heal on their own. Maintain good oral hygiene to prevent infection. If the biting is a recurring issue, however, you must address the underlying cause rather than just treating the symptoms.

What if I don’t realize I’m doing it?

This is common with BFRBs. Keeping a journal to track when you notice the biting can help you identify triggers, and practicing mindfulness can help you become more aware of the behavior so you can consciously interrupt it.