Can you get canker sore on top gums?

Yes: Yes, you can get canker sores on the gums, cheeks, the soft palate (the back upper portion of your mouth) and very commonly on the tongue. They tend to be round, white or gray in color, and have a red edge or border around them. Citrus fruits and acidic fruits and vegetables can exacerbate or trigger them, as can dental trauma or even braces. They generally heal within a week or two.

Definitely, yes : Canker sores are the most common oral lesions. Individual ulcers typically last 1-2 weeks. Most canker sores go away on their own. The condition is idiopathic (cause is not known) recurrent aphthous ulcers is usually self-limiting. If concerned see your dentist or your surgeon for laser treatment, immediate solution.

Yes: canker sores are viral and can occur in the upper or lower jaw