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comparative dental anatomy

Terms in this set (32)

three cusps in a line

three cusps in a triangle

tritubercular molar

four cusps in a quadrangle

quadritubercular molar

reptilian stage
the simplest form of tooth, the single cone
usually include many teeth in both jaws and is seen where jaw movements are limited to simple open and close (hinge movements)
no occlusion- used for prehension and combat
main function: procurement of food

jaw movements are related to and governed by

early mammalian stage
exhibits three cusps in line in posterior
the largest cusp is centered, with a smaller cusp located anteriorly and another posteriorly

dogs and other carnivores (mixed dentition)
three cusps in a triangle
teeth bypassing each other more or less when the jaw is opened or closed
hinge movement

reflects an occlusal contact relationship between the teeth of the upper and lower jaws (has occlusion)
articulation on the jaws and teeth is consistent with jaw movements and functions of these classes of teeth
four cusps in a quadrangle

quadritubercular

during development, tooth lobes fuse together, and points of fusion are called

each lobe represents a

primary center of formation

anterior teeth lobes

mesial
distal
labial
lingual

3 facial and 1 lingual

lobes of the molars are named the same as

jaws of equal size
up and down movements
trait tends to limit lateral movement

jaws of unequal size
trait tends to increase mobility of the mandible in a lateral direction

refers to tooth bearing conical cusps

characterized by low crowns, and crescent shaped cusps when viewed from above

humans tooth form and jaw movements

bunodont and isognathous- limited jaw movement

all anterior teeth from the proximal

triangular shaped

All teeth from the facial/lingual view are _____________________ in shape

proximal surface of maxillary posterior teeth with the shortest uneven side toward occlusal

proximal surface of mandibular posterior teeth

a general restorative principle states that occlusal forces in dental restorations should be directed along

the long axis of the teeth

proximal contacts project the soft tissue between the teeth
the tissue occupying this space is called the gingival papilla

inter proximal form

partial absence of bone over the tooth

window or hole in the bone with an intact gingival alveolar process

associated with the overall form of the tooth and the work it has to do
the angle of the incisal and occlusal surfaces of anterior and posterior teeth are positioned to be placed over the center of the root or within the confines of the root trunk
roots of posterior teeth are flared for stabilization

t or f: dental arch is flat

false: dental arch is not flat- occlusal curvature

anterior to posterior curvature of the dentition

curvature of spee

facial to lingual curvature of the posterior teeth

curvature of wilson

the combination of the curvature of spee and the curvature of wilson

compensating occlusal curvature

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