Dental Anatomy Flashcards
what surface of the maxillary 1st premolar has a more prominent root concavity that hosts a lot of missed deposits
mesial
what is the mineral percent for enamel
96%
what is the mineral percent for dentin
70%
what is the mineral percent for cementum
50%
how many centers of development do anterior teeth form from
4
which teeth have a larger well developed cingulum
maxillary anterior teeth
what is the height of contour
greatest bulge farthest from the center of the crown of the tooth
where are marginal ridges located
mesial and distal borders on the lingual surface of anterior teeth and occlusal surface on posterior teeth
what are triangular ridge
ridges from cusp tip to central groove
what are transverse ridges
2 triangular ridges connected on the same side of a tooth
what are oblique ridges
two triangular ridges connected across the tooth
what incisors are the largest of all incisors
maxillary incisors
what tooth is the second most congenitally missing
maxillary lateral incisor
what is the longest tooth
maxillary canine
what premolar can have 1 or 2 roots
maxillary 1st premolar
what tooth is likely to have a 5th cusp called the cusp of carabelli
maxillary 1st molar
what tooth has the largest crown in the permanent dentition
maxillary 1st molar
what teeth are the 1st most congenitally missing
3rd molars
what teeth are the smallest and most symmetrical
mandibular central incisors
which canines (max or mandib) have the smoother lingual anatomy
mandibular
what premolar can have 2 or 3 cusps creating U, H, or Y shaped grooves
mandibular 2nd premolars
which tooth is known for being wider mesiodistally than buccolingually
mandibular 1st molar
in general, which side of the tooth is the CEJ more prominent
mesial
are maxillary molars and all premolars larger buccolingually or mesiodistally
buccolingually
which tooth, because of the deep lingual fossae, are more likely to develop lingual caries
maxillary lateral incisors
ameleogenesis imperfecta characteristics
-small, discolored, pitted teeth
-pain due to exposed dentin
-prone to breakage
dentinogenisis imperfecta characteristics
-normal enamel thickness, but chips easily
-blue grey or yellow brown color
-no pulp chambers seen
-mottled
dentin dysplasia characteristics
-no sensitivity
-normal crown size and color, but short roots
hypoplastic (type 1) AI
enamel layer did not develop to normal thickness
hypomaturation (type 2) AI
normal enamel thickness but chips easily
hypocalcified (type 3) AI
normal thickness of enamel but poorly calcified
type 1 DI
in people who have osteogenesis imperfecta
type 2 DI
in people without another developmental disorder
-missing pulp chambers
type 3 DI
in people without another developmental disorder
-large pulp chambers
type 1 dentin dysplasia
radicular type
-half moon pulp and normal crown and colors
type 2 dentin dysplasia
coronal type
-flame or bow tie chambers and does affect crown and color
where is the supernumerary tooth, mesiodens, located
between the maxillary central incisors
T or F: macrodontia is most common when only 1 tooth is bigger than normal
no, this is not common it usually affects multiple/ all teeth
where is gemination most common
deciduous mandibular incisors and permanent maxillary incisors
where is fusion most common
anterior teeth
where is concrescence most common
maxillary molars
where are enamel pearls most commonly found
furcation areas
what syndrome is associated with taurodontism
down syndrome
where is dens in dente most common
maxillary lateral incisors
where is dens evaginatus most common
mandibular premolars
what are features of enamel hypoplasia
dark spots or bands
what are features of enamel hypocalcification
chalky and opaque appearance
what teeth are most commonly effected by ankylosis
deciduous molars
what is a pink/red appearance of a tooth a sign of
internal root resorption
curve of spee is observing a line similar to a smile from which aspect
buccal aspect (side)
curve of wilson is observing a line similar to an upward smile from which aspect
frontal view
a crossbite refers to what relationship between the maxillary and mandibular teeth
maxillary teeth fall lingual to the mandibular teeth
class 1 occlusion is defined as what
the MB cusp of the maxillary 1st molar fits into the buccal groove of the mandibular 1st molar
class 2 occlusion is defined as what? and what do division 1 and division 2 define
the MB cusp of the maxillary 1st molar is in front of the buccal groove of the mandibular 1st molar
division 1: upper incisors protrude
division 2: upper incisors retrude
class 3 occlusion is defined as what
MB cusp of the maxillary 1st molar is behind the buccal groove of the mandibular 1st molar
what are characteristics of primary teeth as compared to permanent teeth
-smaller
-whiter
-thinner enamel
-smoother cusps
-larger pulp chambers
-slimmer and more divergent roots
-more spacing
in general, the lingual height of contour for posterior teeth is in what 3rd (apical, middle, cervical)
middle 3rd
