Mouth ulser(canker sores)...

since 14/06/06 until today, my ulser still can not recover back, very hate it...1st few days just got 3 ulser(s) only but now i also don't how many liao! too many until i can not count it.i went to see company doctor but they just ci cai ci cai only, they give me vitamin C(i think doctor give me wrong medicine, should be Vitamin B12), fever medicine(i don't has fever la!) and another one is to put in ulser. everyday i try to drink about 3-4 litter water and it still same, can not recover. i put salt and it also same. really don't know why this time my ulser very worst, can not recover back easy. hmm.. one of my colleague boil a chinese herbal drink for me to drink, thanks Mei Ling and another one colleague bring me a mouthwash for me, thanks Siok Lin...

Below is the info that i get from online:

Cause
The exact cause of mouth ulcers is unknown, but in some cases they are thought to be caused by an overreaction by the body's own immune system. Factors that appear to provoke them include stress, fatigue, illness, injury from accidental biting, hormonal changes, menstruation, food allergies and deficiencies in vitamin B12, iron and folic acid. Some drugs, such as nicorandil, have been linked with mouth ulcers.
Mouth ulcers are thought to form when the body becomes aware of and attacks chemicals which it does not recognize. The presence of the unrecognized molecules garners a reaction by the lymphocytes, which trigger a reaction that causes the damage of a mouth ulcer.
Trauma to the mouth is a common cause of mouth ulcers. Physical trauma, such as toothbrush abrasion, poking with sharp food, accidental biting, or dental braces can cause mouth ulcers by breaking the mucous membrane. Other factors, such as chemical irritants or thermal injury, may also lead to the development of ulcers. However in many cases, the precise cause is unknown.
A common cause of ulcers is gluten intolerance, in which case consumption of wheat, rye, or barley can result in chronic mouth ulcers. If gluten intolerance is the cause, prevention means taking most breads, pastas, cakes, pies, cookies, scones, biscuits, beers etc. out of the diet and substituting gluten-free varieties where available. Artificial sugars, such as those found in diet cola and sugarless gum, have been reported as causes of mouth ulcers as well.
Other disorders can cause mouth ulcers, including oral thrush, leukoplakia, gingivostomatitis, and oral lichen planus. Mouth ulcers are also associated with ulcerative colitis, Crohn's disease, coeliac disease (gluten sensitivity), bullous pemphigoid, and Behçet's disease. Repeat episodes of mouth ulcers can also be indicative of an immunodeficiency, signalling low levels of immunoglobulin in the mucous membrane of the mouth. Chemotherapy is a common cause of mouth ulcers. The treatment depends on the believed cause.
A common urban myth is that mouth ulcers are directly connected to the onset of the herpes simplex virus, but in reality ulcers associated with herpes (or cold sores) are of an entirely different nature from mouth ulcers, which are not contagious.

Home treatment
The best start is to make sure good oral hygiene is maintained, and spicy/acidic/salty foods and drinks are avoided as they may irritate existing ulcers. In addition, one can treat the pain with several pain-relieving gels like Anbesol, Bonjela, Campho-Phenique, Orabase B, or Kanka, available in drugstores. Some people claim that such gels also accelerate the healing of their ulcers. Additionally, holding moderately concentrated alcohol in the mouth over the area of the ulcer is widely purported to be an effective remedy, presumably because of alcohol's diuretic effect (and, likewise, the more concentrated, the more diuretic), although there is no direct evidence to support this.
Another useful remedy is to use a sticky balm named Dexaltin Oral Paste (Dexamethasone 1–mg/g).
Triamcinolone Acetonide dental paste can be very effective; the steroid reduces the immune system's response in the area of the ulcer. It is available by prescription only.
Use of a hydrogen peroxide antiseptic mouthwash can help to clean debris and bacteria that can accumulate in an ulcer, thus reducing complications associated with its presence. This treatment is widely available at pharmacies from companies such as Colgate, whose product is called Peroxyl. Recently, the Oral-B product Amosan has become an increasingly popular oral cleanser. A recent double-blind crossover study has suggested that its use may prevent or retard the colonization and multiplication of anaerobic bacteria, such as those which are known to inhabit oral wounds.
Most seem to be based on an antiseptic (mild antibiotic), an antacid, or both. Antiseptic techniques suggested include the following:
-Gently clean the mouth ulcers by roughening with a toothbrush; when clean, apply antiseptic.
-Swab the mouth ulcers with sea-buckthorn fruit oil or hydrogen peroxide.
-Rinse the mouth with an antiseptic mouthwash (e.g. Listerine), which can relieve pain for a few hours.
-Pouring salt directly on the ulcer can prove effective, however this can be extremely painful and can scar. Avoiding pressure on the ulcer after applying the salt minimizes the pain.
-Apply glyoxide directly to the ulcers and swish around mouth.
-Rinse the mouth with salt water—1 teaspoon of salt dissolved in 1 cup (250 ml) of warm water (a.k.a. a saline solution).
-Take Lysine-L supplements.
-Rinse mouth and especially the affected area with sage tea 3 times a day. The improvement can be seen as early as within 24 hours.
-Paint half-strength gentian violet solution on the ulcer.
-Gargle a mouthful of warm vinegar with a half-tablespoon of salt for about 30 seconds, 3 times per day; this may be extremely painful, but healing can be seen in as early as 2 days.
-Apply oil of cloves using a cotton swab or Q-tip. This is initially very painful, but will result in a period of time where the affected area is quite numb, allowing painless chewing or talking.

Antacid techniques suggested include the following:
-Swab the ulcers with Milk of Magnesia.
-Apply powdered alum directly to the ulcers—available in the spice aisle at grocery stores; this can be very painful, but is proven to work.
-Make a paste of baking soda and water; apply directly to the ulcers.
-Make a paste of crushed Tums (antacid) and water—apply directly to the ulcers.
-Rinse the mouth with a baking soda-water mix—1 teaspoon of baking soda dissolved in 1 cup (250 ml) of warm water.
-Avoid acidic foods such as tomato, citrus, soft drinks, and vinaigrette salad dressings.

Combination therapies recommend the use of the antiseptic before the antacid, that is, swab mouth ulcers with hydrogen peroxide and then swab them with Milk of Magnesia.
A good temporary remedy for the pain of the mouth ulcer is to numb the affected area with ice. Although this may cause intense pain in the beginning, it is highly effective and lasts for about half an hour, depending on the number of ice cubes used and the time spent using said ice cubes.

Treatment for severe cases
Treatments based on antibiotics and steroids such as Dexamethasone Elixir are reserved for severe cases, and should be used only under medical supervision. Tetracycline suspension is a common antibiotic prescribed for mouth ulcers. Some doctors may also prescribe a local anesthetic, such as lidocaine, for cases of multiple or severe mouth ulcers. If it does not heal within a week, a doctor or dentist may cauterize it using a silver nitrate applicator or laser. This procedure immediately burns off the ulcer, causing it to completely disappear within a few hours or two to three days.
In very severe cases, a doctor may prescribe a steroid treatment. One such steroid is methylprednisolone (usually in a dose-pack), taken orally for a period of 7 days. Alternatively, the doctor may directly inject a steroid into the site of the ulcer (this treatment is performed with kenalog. Between 0.2 and 0.4 cc of kenalog is injected into the site of the ulcer, which will usually be completely healed 72 to 96 hours after the injection).
Some dentists recommend a sulfuric acid solution for treating mouth ulcers, such as debacterol.
The miracle cures that are advertised should be viewed with skepticism. However, aqueous sulphuric acid products as listed above can provide significant pain relief, if not treating the underlying causes.
Prevention
In some cases, switching toothpastes can prevent mouth ulcers from occurring, with some being able to reduce the occurrence of ulcers by approximately 80%. Sodium dodecyl sulfate (sometimes called sodium lauryl sulfate or simply SLS), a detergent found in most toothpastes, is thought to increase the incidence of mouth ulcers. Using toothpaste free of this compound has been found to help many people by reducing the amount and size of ulcers and in some cases, completely stopping them. A few individuals have noticed that switching to a toothpaste with baking soda prevented re-occurence of mouth ulcers.
Many people have found that taking Lysine-L supplements can help to reduce the frequency of mouth ulcer appearances. Additionally, zinc deficiency has been observed in people with recurrent mouth ulcers, and zinc supplementation decreased recurrence of the mouth ulcers.
Some people have reported that the frequency of mouth ulcer occurrences decreased greatly after a particularly large amalgam tooth filling was replaced by some other kind of dental restoration. However, the connection between amalgam fillings and mouth ulcers is not universally accepted, and such replacement can be costly.
Dental braces are a common physical trauma that can lead to mouth ulcers and can be treated with wax to reduce abrasion of the mucosa. Avoidance of other types of physical and chemical trauma will prevent some ulcers, but since such trauma is usually accidental, this type of prevention is not usually practical.