Mouth Ulcers: 2026 Hong Kong Dental Fee Guide — Causes, Treatments & Prevention Explained

Mouth ulcers (medically known as oral ulcers) are one of the most common oral complaints among Hong Kong residents. Whether eating, speaking, or even swallowing, the stinging pain caused by mouth ulcers can be extremely difficult to bear. There is a wide range of opinions circulating about the causes and management of mouth ulcers. This article aims to provide an objective, balanced overview of the causes, first-aid measures, prevention strategies, and guidance on when to seek professional dental care.

Why Do Mouth Ulcers Develop? Common Causes of Oral Ulcers Explained

Mouth ulcers are not caused by a single factor — they arise from a combination of internal and external influences. Common causes include:

• Physical trauma: Accidentally biting the lip or tongue, brushing teeth too vigorously, or persistent friction against the oral mucosa from a poorly positioned wisdom tooth can all trigger mouth ulcers.
• Weakened immunity and stress: Chronic sleep deprivation and prolonged psychological stress can disrupt the immune system, increasing the likelihood of developing mouth ulcers.
• Nutritional deficiencies: Insufficient intake of B vitamins (particularly B12), iron, or folic acid can weaken the oral mucosa.
• Dental health issues: Severely decayed teeth with broken or chipped crowns can leave sharp edges that scratch the oral cavity. In such cases, dentists typically recommend dental fillings or root canal treatment to restore the damaged tooth. Maintaining good oral hygiene is equally important — regular scaling and cleaning helps reduce bacterial build-up and lowers the risk of infection. For patients with missing teeth who are considering dental implants, it is also essential to ensure that the crown design is appropriate to avoid irritating the gums.

Special Focus: Tips for Managing Tongue Ulcers

Compared to ulcers on the inner lip, tongue ulcers tend to cause greater pain because the tongue moves frequently during speaking and chewing. If you develop a tongue ulcer, it is advisable to avoid spicy, highly acidic, or very hot foods, as these can further irritate the wound. Additionally, using mouthwashes and ulcer gels containing hyaluronic acid or anti-inflammatory ingredients can form a protective film over the ulcer surface, helping to accelerate healing.

Frequently Asked Questions About Mouth Ulcers (FAQ)

1. Do I need to see a dentist for a mouth ulcer?

In general, a typical mouth ulcer will heal on its own within one to two weeks. However, if an oral ulcer persists for more than three weeks without improvement, or if the ulcer is unusually large or accompanied by fever or other symptoms, you should seek medical attention promptly for a thorough examination to rule out serious conditions such as oral cancer.

2. Is rinsing with salt water an effective remedy for mouth ulcers?

Salt water has mild antibacterial and anti-inflammatory properties. Rinsing moderately with lukewarm salt water can help maintain oral hygiene and relieve discomfort caused by mouth ulcers. However, you should never apply coarse salt directly to the ulcer wound — this will not only cause intense pain but may also lead to further inflammation and worsening of the ulcer.

3. Does getting frequent mouth ulcers indicate excessive internal heat?

Traditional Chinese Medicine often attributes this to "excessive internal heat," but from a modern medical perspective, recurrent mouth ulcers are more commonly associated with weakened immunity, nutritional deficiencies, or structural oral issues (such as misaligned teeth causing repeated biting injuries). It is advisable to address the problem through a balanced diet and improved lifestyle habits.

2026 Hong Kong Dental Service Quality Selection Criteria

When faced with frequent oral problems, seeking professional help is the best course of action. As an independent consumer reference platform, Hong Kong Dental Guide recommends that residents pay close attention to professional accreditation and equipment when choosing a dental clinic. Many established dental centres in Hong Kong are now registered as "Ambulatory Care Centres," which are required to meet strict regulatory standards in infection control, emergency equipment, and healthcare management. Whether for routine check-ups or complex dental procedures, choosing a government-regulated ambulatory care centre offers patients a higher level of safety assurance. Patients are also encouraged to transparently compare dental fees before their appointment, to ensure they receive services that are safe, reliable, and reasonably priced.