3. Gingival diseases of fungal origin
a. Candida-species infections
1) generalized gingival candidosis
b. linear gingival erythema
c. histoplasmosis
d. other
4. Gingival lesions of genetic origin
a. hereditary gingival fibromatosis
b. other
5. Gingival manifestations of systemic conditions
a. mucocutaneous disorders
1) lichen planus
2) pemphigoid
3) pemphigus vulgaris
4) erythema multiforme
5) lupus erythematosus
6) drug-induced
7) other
b. allergic reactions
1) dental restorative materials
a) mercury
b) nickel
c) acrylic
d) other
2) reactions attributable to
a) toothpastes/dentifrices
b) mouthrinses/mouthwashes
c) chewing gum additives
d) foods and additives
3) other
6. Traumatic lesions (factitious, iatrogenic,
accidental)
a. chemical injury
b. physical injury
c. thermal injury
7. Foreign body reactions
8. Not otherwise specified (NOS)