Reviewed By Dr. Tyler N Davis, DMD
Reading Time: 3 minutes
Noticing a white line inside your cheek can feel concerning, especially if you are not sure how long it has been there. In many cases, this type of line is related to everyday friction inside the mouth, but it is still worth knowing what changes are normal and when to have a dentist take a closer look.
Table of Contents
What Is Linea Alba in the Mouth?
Linea alba is a thin white line that forms on the inside of the cheek, usually where the upper and lower teeth come together.
Linea alba often looks:
- Straight or slightly raised
- White or pale in color
- Horizontal along the inner cheek
- Present on one or both sides of the mouth
- Painless in most cases
The line forms because the cheek tissue becomes slightly thicker in response to repeated rubbing or pressure.
What Causes a White Line Inside the Cheek?
A white line inside the cheek is often caused by friction between the teeth and the buccal mucosa, which is the soft tissue lining the inside of the cheek.
Common causes include:
- Cheek biting
- Teeth clenching or grinding
- A misaligned bite
- Rough tooth edges
- Orthodontic appliances
- Dentures or dental restorations that rub the cheek
Linea alba can become more noticeable if the cheek repeatedly gets caught between the teeth during chewing, talking, or clenching.
How Is Linea Alba Different From Other White Patches?
Linea alba usually follows the bite line and has a smooth, linear appearance. Other white areas may look patchy, thick, lacy, ulcerated, or irregular.
A dental exam is important if the white area:
- Does not follow the bite line
- Appears as a thick patch instead of a thin line
- Is painful, red, or bleeding
- Changes in size, texture, or color
- Lasts longer than two weeks
Mouth changes that do not improve, especially sores or white or red patches that last more than two weeks, should be checked by a dental or medical provider.
Does Linea Alba Need Treatment?
Linea alba often does not need treatment if it is painless and clearly related to friction. The main goal is to identify what is irritating the cheek and reduce that repeated pressure when possible.
A dentist may check for:
- Tooth wear from grinding
- Rough or sharp tooth edges
- Bite alignment concerns
- Ill-fitting dentures or dental work
- Signs of cheek biting
If clenching or grinding is contributing to the line, a nightguard or bite-related treatment may be discussed.
Comprehensive Dental Exams at Power Road Dental Care
The inside of the mouth contains many different types of soft tissue, and changes in color, texture, or appearance can occur for a variety of reasons. Regular dental exams play an important role in identifying and monitoring these changes over time.
At Power Road Dental Care, Dr. Tyler N. Davis carefully evaluates both the hard and soft tissues of the mouth as part of every comprehensive dental examination. His thorough approach helps patients better understand their oral health and provides an opportunity to address concerns before they become more significant problems.
Dentist in Mesa, AZ
If you have noticed a white line inside your cheek or another change that concerns you, a dental exam can help identify the cause.
To book an appointment at our dental office in Mesa, AZ, call (480) 664-1438 or visit us at 2500 S Power Rd STE 102, Mesa, AZ 85209. We proudly serve patients throughout the Phoenix East Valley, including Mesa, Gilbert, Chandler, Apache Junction, and Queen Creek.
FAQs
Why do I have a white line inside my cheek?
A white line inside the cheek is often caused by repeated friction where the teeth touch the cheek. Cheek biting, clenching, grinding, or a rough tooth edge can make it more noticeable.
Does linea alba in the mouth go away?
Linea alba may fade if the friction or pressure causing it is reduced. If the same irritation continues, the white line may stay visible.