A mouth sore on the roof of the mouth is the less frequent of the mouth canker sores.
A roof mouth sore or roof canker sore can be located on the front or on the back of the roof of the mouth.
Unless they are huge, canker sores on the roof of the mouth are less painful than other mouth canker sores because you can't bit them and they are less subject to irritation when you eat or speak.
If you often have canker sores on the roof of your mouth, AftaZen is a preventive treatment that can keep them away from the roof of your mouth. Learn how: