Adverb
In a buccal manner, such as:
(dentistry, medicine) Via buccal administration; via absorption through the mucosa of the cheek.
(dentistry, medicine, referring to force, movement, or both) In the buccal direction; toward the cheek.
2010, Staley, Robert N.; Reske, Neil T., Essentials of Orthodontics: Diagnosis and Treatment, →ISBN, page 86:Banded molars can be rotated, moved buccally and lingually, extruded on one side, and intruded on the other side in ways that are not desired.