noun which may take the genitive case particle 'no'
buccal; cheek side
Anatomical term referring to the side of a tooth facing the cheek. Used in dentistry and oral biology.
この歯の頬側に小さな虫歯が見つかった。
A small cavity was found on the buccal side of this tooth.
頬側の歯肉が少し腫れている。
The buccal gum is slightly swollen.