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external features

supporting structures

QuestionAnswer
maxillary arch upper arch
mandibular lower arch
midline an imaginary line that separtes right and left sides of the mouth
quadrants midline separting the maxillary and mandibular arch= 4 quadrants
anterior teeth 6 teeth per arch includes incisors&canines
posterior teeth 10 per arch includer premolars and molars
incisors cuts and divides
canines pierce and tear hold
premolar crush and grind
molars crush and grind
mesial towards the midline
distal away from midline
lingual towards the tounge (mandibular only)
buccal towards the cheek (posterior only)
labial towards the lip (anterior only
occlusal chewing surface (posterior only)
incisal biting edge (anterior only)
palatal towards the palate(maxillary only)
facial combined term for labial and buccal
mastication chewing
aesthetics apperearance
phonectics speech
anatomical crown entire crown, covered by enamel
clinical crown portion visible above gingiva
anatomical root entire root
apex end (tip) of the root
apical foramen natural opening at the very end of root that allows passage of nerves and blood vessels
trifurcated refers to tooth with 3 roots
bifurcated refers to tooth with 2 roots
furcation the space between roots; the area where they join
gingiva outermost layer of tissue covering the periosteum surrounding the tooth
free gingiva gingiva which is movable and fits around the crown of tooth above the cervix
attached gingiva immobile.lies below epithelial attachment, extending from base of the sulcus to the mucogingival junction
gingival crest(gingival margin) top edge of free gingiva circling the tooth
gingival sulcus space between tooth and free gingiva.extends from gingival crest to epithelial attachment
epithelial attachment point where gingiva becomes attached to the bone. found at the bottom of the sulcus
gingival groove a line separating free and attached gingiva on facial side of gingiva
dentition the number kind and arrangement of an individual's teeth
permanent teeth sencond set of teeth 32 in all
deciduous teeth(primary teeth) baby teeth 20 in all
tooth number system universal numbering system beings upper right
1-32 permanent teeth
a-t deciduous teeth
eruption process of teeth coming into the mouth
exfoliation normal shedding of primary teeth
succedaneous permanent teeth that replace deciduous teeth
nonsuccedaneous permanent teeth that do not replace deciduous teeth
resorption progressive destruction of the roots of deciduous teeth, caused by occlusal pressure of permanent tooth pressing on the decidous roots
interdental papilla triangular shaped gingiva that extends into the interproximal space
interproximal space wedge shaped area that lies between the proximal surfaces.extends from contact area to interdental papilla
contact area the area on proximal surfaces that actually touch each other
long axis the imaginary vertical line around which the structures of the teeth are symmetrically arranged
axial surfaces surfaces of the teeth that are parallel to the long axis
proximal surfaces surfaces that lie adjacent to each other
embrasures v shaped spaces that extend outward from contact area
line angles divides 2 surfaces
point angles divides 3 surfaces
Created by: fernnandezcc