Table 1.

Mucositis scoring criteria [from Sonis et al. (16)].

Score	Parameter
0	Completely healthy cheek pouch with no erosion or vasodilatation
1	Presence of erythema, but no evidence of erosion in the cheek pouch
2	Severe erythema, vasodilation, and surface erosion
3	Formation of ulcers in one or more faces of the mucosa, but not affecting more than 25% of the surface area of the cheek pouch, as well as severe erythema and vasodilatation
4	Cumulative formation of ulcers of about 50% of the surface area of the cheek pouch
5	Complete ulceration of the cheek pouch mucosa, in which the fibrosis makes oral mucosa exposure difficult