What Causes Blood Blisters?

Mouth Injuries

Among the most uncomfortable types of blood blisters are ones that occur in the mouth, which can be brought about by mouth injuries. Individuals who currently wear braces will have a higher chance of developing a blood blister. When the metal of an individual's braces rubs against the side of their mouth, it's possible the tissues could be damaged, which could create a blood blister. These injuries can also be created by eating jagged pieces of food or hard candy. Patients might also experience blood blisters if they wear dentures. In most cases, dentures shouldn't cause an injury in the mouth. However, poorly-fitted dentures might cause undue amounts of pressure and friction to portions of the mouth, which could lead to the creation of a blood blister.