mesial vs. distal

medial.

Dentistry. directed toward the sagittal plane or midline of the face, along the dental arch. Compare buccal ( def 3 ), distal ( def 2 ).

situated away from the point of origin or attachment, as of a limb or bone; terminal. Compare proximal.

Dentistry. directed away from the sagittal plane or midline of the face, along the dental arch. Compare buccal ( def 3 ), mesial ( def 2 ).