牙龈炎

gingivitis

yá = y + a2

tooth / ivory / CL:顆|颗[ke1]

Mnemonic symbol: wisdom tooth. Maud Younger has a wisdom tooth removed just inside the ashram's kitchen.

gums / gingiva

kěn = k + (e)n3

variant of 啃[ken3]

yín = y + (e)n2

gums (of the teeth)

gingivitis

yán = y + an2

flame / inflammation / -itis

炎 = 火 : Mnemonic symbol: As I just learned "itis" is the feeling you get after eating too much.

炎 = 火 : Maud Younger ate too much just inside anthill. She's sleeping so hard that she doesn't even wake up from the fire which is spreading fast.

牙龈炎 is not used as a component in another word.

牙龈炎 currently does not appear in any sentence.