Classification: Sakitamiwa

This stage represents the initial, most severe phase of the ulcer where the lesion is fully formed and active. PubMed Central (PMC) (.gov) A1 (Active 1):

The regenerative epithelium nearly covers the mucosal break. The ulcer is significantly smaller, and the coating is minimal. 3. Scarring Stage (S) This stage indicates complete or near-complete healing. sakitamiwa classification

This final stage indicates that the ulcer has closed, though the underlying tissue is still maturing. This stage represents the initial, most severe phase

The swelling around the edges begins to subside, but the white coating remains thick and the ulcer crater is still very distinct. Healing Phase (H) This stage represents the initial