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Dominant buccal cusp and a very small lingual cusp; The buccal cusp is broad and the lingual cusp is less than half the size of the buccal cusp. Two-thirds of the buccal surface can be seen from the occlusal aspect; A single conical root with an oval/round cross section. The root is grooved longitudinally both mesially and distally.
Although the palatal root generally appears straight on radiographs, there is usually a buccal curvature in the apical third. Depressions on the buccal and palatal surfaces of the palatal root can be present but are generally shallow. There are prominent depressions found on the distal aspect of the mesiobuccal roots.
The side of a tooth that is adjacent to (or the direction toward) the inside of the cheeks and lips, as opposed to lingual or palatal (both oral), which refer to the side of a tooth adjacent to (or the direction toward) the tongue or palate, respectively, of the oral cavity. Vestibular includes both buccal and labial.
Surfaces that are nearest the cheeks or lips are referred to as either buccal (when found on posterior teeth nearest the cheeks) or labial (when found on anterior teeth nearest the lips). Those nearest the tongue are known as lingual. Lingual surfaces can also be described as palatal when found on maxillary teeth beside the hard palate.
It takes about 3 years for the adult premolar and its root to fully calcify. Due to its long buccal root with narrow root canal and short palatal root with wide root canal, the upper 1st premolar is very prone to fracture during exodontia, hence, it is sometimes referred to some dentists as the "King of Fracture".
In human anatomy of the mouth, the palatine process of maxilla (palatal process), is a thick, horizontal process of the maxilla. It forms the anterior three quarters of the hard palate, the horizontal plate of the palatine bone making up the rest. It is the most important bone in the midface.
When these processes fail to fuse fully, a cleft lip, cleft palate, or both can result. The nasolabial folds are the deep creases of tissue that extend from the nose to the sides of the mouth. One of the first signs of age on the human face is the increase in prominence of the nasolabial folds.
Note: Additional shades of passive articulation are sometimes specified using pre-or post-, for example prepalatal (near the border between the postalveolar region and the hard palate; prevelar (at the back of the hard palate, also post-palatal or even medio-palatal for the middle of the hard palate); or postvelar (near the border of the soft ...