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The upper lip ; The upper teeth, either on the edge of the teeth or inner surface ; The alveolar ridge, the gum line just behind the teeth ; The back of the alveolar ridge (post-alveolar) The hard palate on the roof of the mouth ; The soft palate further back on the roof of the mouth
In the upper lip, these consist of two bands, lateral and medial, on either side of the middle line; the lateral band m. incisivus labii superioris arises from the alveolar border of the maxilla, opposite the lateral incisor tooth, and arching lateralward is continuous with the other muscles at the angle of the mouth; the medial band m ...
A labial frenectomy is a form of frenectomy performed on the lip. The labial frenulum, also known as lip-tie, often attaches to the center of the upper lip and between the upper two front teeth. This can cause a large gap and gum recession by pulling the gums off the bone.
Cupid's bow feature of a human lip. The upper and lower lips are referred to as the labium superius oris and labium inferius oris, respectively. [2] [3] The juncture where the lips meet the surrounding skin of the mouth area is the vermilion border, [4] and the typically reddish area within the borders is called the vermilion zone. [5]
The commissure is the corner of the mouth, where the vermillion border of the superior labium (upper lip) meets that of the inferior labium (lower lip). The commissure is important in facial appearance, particularly during some functions, including smiling. As such it is of interest to dental surgeons.
The mouth consists of two regions: the vestibule and the oral cavity proper. The vestibule is the area between the teeth, lips and cheeks. [3] The oral cavity is bounded at the sides and in front by the alveolar process (containing the teeth) and at the back by the isthmus of the fauces. Its roof is formed by the hard palate.
Its fibers converge, to be inserted into the muscular substance of the upper lip between the angular head and the levator anguli oris. The lateral fibers, forming the zygomatic head (also known as the zygomaticus minor muscle [ 3 ] ) arise from the malar surface of the zygomatic bone immediately behind the zygomaticomaxillary suture and pass ...
Recent studies have found that both the dental lamina and vestibular laminae jointly give rise to the large tooth primordia in the cheek region of the maxilla. Also, in mice, human and sheep, the vestibular lamina and dental lamina originate from a common epithelial placode- odontogenic epithelial zone which is in the upper lip region.