Fissured Tongue
Fissured tongue produces grooves on the tongue surface; trapped food can irritate them or contribute to bad breath.
[1][2]The short answer
Fissured tongue is a benign pattern of deep grooves on the tongue that can trap food debris and cause irritation or bad breath.
[1][2]
What the change looks like

What does a fissured tongue feel like?
Why do tongue fissures develop?
How should changes in the grooves be followed?
The depth and pattern of fissures can vary. The useful question is whether pain, redness, coating, or a new change has developed; these sources do not provide a patient staging chart.
[1]When should you book an assessment?
How is fissured tongue identified?
A clinician identifies fissured tongue by examining the tongue surface and asking about symptoms. Examination also helps distinguish simple fissures from other causes of tongue soreness or surface change.
[1]What care may help?
What should the care discussion cover?
What if a fissured tongue is not kept clean?
How can discomfort be reduced?
Frequently asked questions
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.
