Laser Treatment for Mouth Ulcers in Bangkok – 800 THB

What is a mouth ulcer?

A mouth ulcer (aphthous ulcer or canker sore) is a shallow white or yellow sore with a red border on the inner cheek, lip, tongue or gums. It hurts when you eat or talk and usually heals by itself in 7–14 days. Common triggers include biting your cheek, braces rubbing, lack of sleep, stress and hormonal changes.

How does the laser help?

A low-level laser supports tissue repair and reduces pain signals in the area. Many patients feel less pain soon after treatment, so eating and speaking become easier. Results vary with the size of the ulcer and the person.

Price (2026)

Who is it for?

• Painful ulcers that make eating or speaking difficult
• People who get ulcers often and want faster relief
• Braces wearers with sores from rubbing – the dentist will also fix the rubbing point

How it is done

1. The dentist examines the ulcer and asks how long you have had it
2. You wear protective glasses
3. The laser is applied to the ulcer for a few minutes, with no injection
4. You can go home and eat normally

Aftercare

• Avoid spicy, very hot, sour and hard fried food
• Use a soft toothbrush and avoid brushing the ulcer
• Drink enough water and get enough rest
• If braces rub, cover the spot with orthodontic wax

When to see a doctor instead of waiting

• The ulcer has not healed in 2 weeks
• It is unusually large, or there are many ulcers at once
• Ulcers come back very often, or come with fever, swollen glands or tiredness
• A sore that is painless but hard, raised, or a lump in the mouth

In these cases the dentist will examine you and refer you to a specialist when needed.