Mandibular second premolars frequently have three cusps--- one buccal and two lingual. The mucous salivary glands are similar in structure to the buccal and labial glands. These have been cutaneous skin flaps, amniotic membranes, and buccal mucosa. There are usually four cusps on maxillary molars, two buccal and two palatal. Glassblowing involves chronic suction and may produce similar irritation of the buccal mucosa. There are usually four cusps on maxillary molars, two on the buccal and two palatal. No preparation of the buccal or lingual/palatal surfaces is required. Bulging of the buccal or lingual cortical plates may be present. In the mandible, buccal or lingual cortical expansion and thinning are noted. Common routes of administration include sublingual, buccal, and intranasal. It has two ventral plates on the anterior margin of the buccal capsule. Reference samples are usually collected through a buccal swab. The joining of buccal and lingual triangular ridges is usually named as an example. These receptors are located only in the epithelium of the buccal chamber. The buccal ridge runs cervico-occlusally in approximately the center of the buccal surface of premolars.