what is the rectangular area between the two ridges running under the nose to the midline of the upper lip
philtrum
what part of the mandible forms the chin
mental protuberance
what is the term for the angle at the corner of the mouth
labial commissure
what is the term for the space between the teeth and the inner mucosal lining of the cheeks
vestibule
what is the term for the white ridge of raised tissue on the buccal mucosa, which extends horizontally level where the maxillary and mandibular teeth come together
linea alba
what is the term for the narrow band of tissue that connects two structures
frenum
the ____ frenum passes from the floor of the mouth to the midline of the ventral border on the tongue
lingual
unattached gingiva consists of the tissues from the top of the gingival margin to the
base of the gingival sulcus
normal gingiva has which of the following characteristics
the color of normal gingiva varies according to the individual's pigmentation
the nasal surfaces of the hard palate are covered with ____ and the oral surfaces are covered with ____.
respiratory mucosa; oral mucosa
what is the term for the pear shaped pad of tissue located behind 8 & 9
incisive papilla
what is the term for the u-shaped projection of tissue in the back of the throat
uvula
the anterior ___ of the tongue is called the body
two-thirds
how many teeth are in the primary dentition
20
what does the mixed dentition period begin with
eruption of the first permanent tooth
what are the four types of teeth
incisors, canines, premolars, molars
the ___ are the longest teeth in the human dentition
canines
every tooth in the mouth has five surfaces, the:
mesial. distal, facial, lingual, and masticatory (occlusal or incisal)
which of the following statements is true of the contours of the teeth
the crown of the tooth narrows toward the cervical line
what is the term for the area where the mesial or distal surfaces of the tooth touch the adjacent tooth in the arch
contact area
what is the relationship between the max and man teeth when the jaws are in the closed position
occlusion
which jaw position produces maximal stable contact between the occluding surface of max and man teeth
centric occlusion
what is the key to Angle's Classification system for occlusion and malocclusion
the permanent maxillary first molars
which tooth-numbering system is used most often in the US
Universal/National System
The permanent teeth are _____ in the universal/national system