Search results
Results From The WOW.Com Content Network
The chin is the forward pointed part of the anterior mandible (mental region) below the lower lip. A fully developed human skull has a chin of between 0.7 cm and 1.1 ...
The mental nerve can be blocked with local anesthesia.This can be used in surgery of the chin, the lower lip, and the buccal mucosa from midline to the second premolar.In animals, it can be used in surgery of the lower lip, [2] and lower teeth anterior to the site of administration. [3]
The mentalis muscle causes a weak upward-inward movement of the soft tissue complex of the chin. [2] This raises the central portion of the lower lip. [2] In the setting of lip incompetence (the upper and lower lips not touching each other at rest), the contraction of the mentalis muscle can bring temporary but strained oral competence.
The necessity of translation to produce further opening past that which can be accomplished with a sole rotation of the condyle can be demonstrated by placing a resistant fist against the chin and trying to open the mouth more than 20 or so mm. The resting position of the temporomandibular joint is not with the teeth biting together.
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]
Growth of mandible depends on the normally developing condyles and the muscle function For example, trauma or infection that affect mastoid, middle ear or the joint will result in ankylosis of temporomandibular joint leading to mandibular micrognathia. [31] Macronagthia; Macronagthia is a condition of abnormally large jaws.
The face is the front of an animal's head that features the eyes, nose and mouth, and through which animals express many of their emotions. [1] [2] The face is crucial for human identity, and damage such as scarring or developmental deformities may affect the psyche adversely.
Surface projections of the major organs of the trunk, using the vertebral column and rib cage as main reference points of surface anatomy.. Surface anatomy (also called superficial anatomy and visual anatomy) is the study of the external features of the body of an animal. [1]