Repeated blisters in the oral cavity may be related to local mechanical stimulation, mucosal burns, viral infections and other reasons.
1. Local mechanical stimulation: If there is a sharp cusp or marginal ridge, residual roots and crowns, ectopic wisdom teeth, and poor restorations, they may repeatedly stimulate the adjacent oral mucosa, resulting in the accumulation of submucosal fluid and the formation of blisters.
2. Mucosal scald: especially love to eat too hot food, it may stimulate the oral mucosa to form mucosal scald, which can easily cause submucosal fluid accumulation, forming blisters;
3. Viral infections: Herpes simplex virus in particular can cause oral herpes simplex, which can occur in any part of the oral mucosa, appearing in clusters of small blisters, which slowly breaks down and forms an ulcerated surface, which then crusts and heals.
Recurrent blistering of the mouth may also be strongly related to other causes, and it is recommended to visit a regular dental facility for timely diagnosis.