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Dental Anatomy
Dental Assisting Broward
190
Anatomy
Professional
12/09/2013

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Term
How many teeth in complete permanent dentition
Definition
32
Term
the tissue of tooth which most closely resembles bone
Definition
cementum
Term
Not a surface of a posterior tooth
Definition
labial
Term
teeth that have longest roots
Definition
canines
Term
majority of crown and root is composed of
Definition
dentin
Term
a 42 yr old person with a deciduous molar is said to have a ____ dentition
Definition
mixed
Term
the surface of a tooth that faces toward the tongue is called the ____ surface
Definition
lingual
Term
a cusp of carabelli is found on the
Definition
perm. max 1st molar
Term
* the lingual lobe in the cervical 3rd of an anterior tooth is referred to as the
Definition
cingulum
Term
the next tooth located distal to the canine is the
Definition
1st pre molar
Term
an open v-shaped space around the contact areas, which allows for the food to be pushed away from the tooth while chewing is referred to as the
Definition
embrasure space
Term
there are no ___ in primary dentition
Definition
premolars
Term
which is true of sharpeys fibers
Definition
-they can embed in either bone or cementum
-the same fiber could embed in bone at one end and cementum in the other
Term
the tissue that covers the anatomic root of the tooth is referred to as
Definition
cementum
Term
* which tooth tissue has the function of pulp protection
Definition
dentin
Term
*the following are all covered with lining mucosa EXCEPT
Definition
palatal mucosa
Term
** oblique ridges are found on
Definition
max molars
Term
which is not true about cementum
Definition
it stops forming when tooth erupts
Term
*the interradicular group of fibers is found on the
Definition
mand 1st molar
Term
the tooth numbering system which uses a 2 digit tooth #
Definition
FDI
Term
the location of the ___ is at the same anatomical location throughout the life of the tooth
Definition
CEJ
Term
The 1st # in the FDI system refers to which of the following (all)
Definition
quadrant
perm dentition
deciduous
Term
which tooth is formed from more than 4 lobes
Definition
mand 1st molar
Term
distolingualmesial
Definition
none of the above
Term
hardest tissue in the body
Definition
enamel
Term
area where crown meets root and enamel meets cementum is referred to as
Definition
CEJ
Term
the ____ is the part of a tooth that touches the adjacent tooth in the same arch
Definition
proximal contact area
Term
* the contact area on all molars is located on the ____ third
Definition
middle
Term
which tooth is not a succedaneous tooth
Definition
universal 18
Term
the opening at the apex of the root where the blood vessels and nerves enter the tooth is the
Definition
apical foramen
Term
the chewing surface of the posterior teeth is the
Definition
occlusal
Term
perm molars are succedaneous teeth. they replace deciduous molars
Definition
both statements false
Term
a ridge that runs from a cusp tip to the center of the occlusal surface is called the
Definition
triangular ridge
Term
a rounded shallow depression found on the occlusal surface of molars is a
Definition
fossa
Term
an elevation or mound found on the occlusal of posterior teeth is referred to as a
Definition
cusp
Term
* function of incisors
Definition
shearing/cutting
Term
cells tha form bone
Definition
osteoblasts
Term
a rounded projection on the incisal edge of a newly erupted tooth is referred to as a
Definition
mamelon
Term
stippling is a characteristic of
Definition
attached gingiva
Term
the tooth surface that faces the cheek or lips is called
Definition
facial surface
Term
enamel is thicket at
Definition
incisal edge
Term
where is the distal contact area of the max canine
Definition
middle of tooth
Term
which is not true about the alveolar mucosa
Definition
it has rete peg formation
Term
radiographic white line seen adjacent to the root of the tooth is the
Definition
lamina dura
Term
there are ____ non succedaneous teeth
Definition
12
Term
distolabial
Definition
anterior tooth line angle
Term
distolingualocclusal
Definition
posterior tooth point angle
Term
* when the mesiobuccal cusp of the 1st max molar is directly over the buccal groove of the mand 1st molar the occlusion is
Definition
Class I
Term
the projection of tissue at the end of the soft palate
Definition
uvula
Term
the fold of tissue that connects the tongue to the floor of the mouth is the
Definition
lingual frenum
Term
an extra growth of bone that may be found on the hard palate
Definition
torus palatinus
Term
the germ layer which is responsible for development of enamel
Definition
ectoderm
Term
ridges of epithelial and connective tissue on the anterior portion of the hard palate are referred to as
Definition
rugae
Term
an elevation of tissue found behind the mand 3rd molar is the
Definition
retromolar pad
Term
the junction of the skin of the face and lips
Definition
vermillion border
Term
when the max labial frenum extends between the central incisors and keeps the teeth apart,the result is called a
Definition
diastema
Term
teeth on the mandibular arch usually erupt ___ the teeth on the max arch
Definition
before
Term
a perm tooth that never develops and is missing
Definition
congenitally missing
Term
smallest permanent teeth
Definition
mand centrals
Term
a single bulge of soft tissue found behind centrals on the palate is called
Definition
incisive papilla
Term
primary molars are replaced by
Definition
premolars
Term
the distobuccal and mesiolingual cusps of max molars are usually connected by
Definition
oblique ridge
Term
process of shedding
Definition
exfoliation
Term
teeth that do not completely erupt and are embedded in bone or soft tissue
Definition
impacted
Term
from a lateral view the alignment of the incisal edges of the anterior teeth to the buccal cusp f 3rd molar
Definition
curve of spee
Term
**** Max !st pre molar has ___ roots
Definition
2
Term
*** Mand 2nd pre molar has __ roots
Definition
1
Term
permanent tooth most likely to have 3 cusps
Definition
mand 2nd pre molar
Term
primitive oral cavity is separated from primitive GI tract by
Definition
buccopharyngeal membrane
Term
condition where the tooth and bone fuse and prevent eruption
Definition
ankylosis
Term
all are contents of oral cavity except
Definition
uvula
Term
a curved roo usually curves to the
Definition
distal
Term
most of the cheek is formed by the
Definition
buccinator
Term
a Class II malocclusion could occur if
Definition
mandible id too small
Term
Class III malocclusion could occur if
Definition
Mand is too large
Term
* with the mouth wide open, which of the following may impinge on the vestible
Definition
coronoid process
Term
what are fordyce granules
Definition
misplaced sebaceous glands
Term
which teeth touch in an ideal protrusive movement
Definition
anteriors
Term
overbite can be described as an
Definition
vertical overlap
Term
which is the smallest cusp on all max molars
Definition
distolingual
Term
which is NOT a characteristic of deciduous teeth when compared to perm teeth
Definition
thicker dentin between pulp and enamel
Term
which of these deciduous molars most resemble perm 1st molars
Definition
max 2nd molars mand 2nd molars
Term
the maxilla originates from the ___ pharyngeal arch
Definition
1st
Term
muscles of facial expression originate from the ___ pharyngeal arch
Definition
2nd
Term
the papillae which do not have taste buds
Definition
filliform
Term
another name for the inside of the cheek
Definition
buccal mucosa
Term
deciduous teeth are important bc
Definition
development of muscles of mastication
formation of jaw bone
alignment of perm teeth
Term
when are in the position of maximum intercuspation, they are said to be in
Definition
centric occlusion
habitual occlusion
Term
factors that affect occlusion
Definition
max protrusion
mand protrusion
mesial drift
size and shape of jaw
Term
the most common relationship of distal surfaces of deciduous 2nd molars is
Definition
mesial step
Term
the max leeway space is 1.8 mm the mand leeways space is about ____
Definition
3.4 mm
Term
centric occlusion is determined by
Definition
muscles
Term
Class II division II occlusion often has
Definition
deep overbite
crowded max incisors
distoocclusion
Term
which of the following are formed by mesoderm
Definition
dentin
cementum
dental pulp
bone
Term
when mand molars are buccal to max molars, an ___ exists
Definition
crossbite
Term
if there is a cleft in the posterior hard and soft palate it probably occurred during the
Definition
10th week
Term
the dental sac plays a role in all of the following except
Definition
enamel
Term
which is not a layer of alveolar bone
Definition
all are layers
cribiform plate
cortical plate
trabecular bone
Term
which of the statements is NOT true about enamel
Definition
enamel is mostly organic in composition
Term
which of the following is not true of dentin
Definition
made up of 50% hydroxyapatite
Term
which is not a bone of the neurocranuim
Definition
all are bones of neurocranium
frontal
ethmoid
parietal
sphenoid
Term
which is not a process of the maxilla
Definition
coronoid
Term
the mandibular foramen is located on the
Definition
medial ramus of the mandible
Term
how many bones form the neurocranium
Definition
8
Term
what is not part of the mandible
Definition
articular eminence
Term
smallest bone of facial skeleton
Definition
lacrimal
Term
the parietal bones and occipital bones are joined by
Definition
lambdoid suture
Term
only moveable bone in the skull
Definition
mandible
Term
large opening in occipital bone where spinal cord passes into brain
Definition
foramen magnum
Term
which papillae are positioned between anterior 2/3 & posterior 1/2 of dorsum of tongue
Definition
circumvaltive
Term
which embryonic cell layer forms the tongue
Definition
ectoderm
endoderm
mesoderm
Term
which hard tissue forms last
Definition
cementum
Term
cracks in enamel caused by trauma are known as
Definition
enamel lamellae
Term
which of these papillae is only for general sensation
Definition
filliform
Term
the dental sac consists of several row of flat cells. they surround part of enamel
Definition
both statements true
Term
which of the following is not a bone of the viscerocranium
Definition
occipital
Term
another name for chin is mental spine. posterior to chin (bilaterally) is the mental foramen.
Definition
1st false, second true
Term
largest of paranasal sinuses
Definition
maxillary sinus
Term
how many bones in viscerocranium
Definition
14
Term
largest cranial bone
Definition
frontal
Term
what suture connects frontal and 2 parietal bones
Definition
coronal suture
Term
bridge of nose is formed by
Definition
nasal bones
Term
opening in the bone in the anterior hard palate
Definition
incisive foramen
Term
the ____ and ethmoid bone form the main part of the nasal septum
Definition
vomer
Term
which of the following is not a factor in causing teeth movement
Definition
curve of spee
Term
short tubelike opening through bone
Definition
foramen
Term
budstage of enamel organ arises from mesoderm
Definition
false
Term
hyper-calcified enamel caused by insufficient growth of enamel crystals
Definition
false
Term
cap stage has 3 layers
Definition
true
Term
lobes are centers of formation that develop in teeth
Definition
true
Term
when teeth 1st erupt, pulp chamber is large and decreases in size with age
Definition
true
Term
which is not true of dentin
Definition
made up of 50% hydroxyapatite
Term
each indicate a maxillary sinus infection exceot
Definition
perio pockets surrounding max molars
Term
typical 9 yr old would have all of the following except
Definition
would have all
deciduous 2nd molars
deciduous max canines
perm max laterals
perm max 1st molars
Term
typical pt that has high mesiobuccal cusp in trauma would begin to form
Definition
reparative dentin
Term
secondary dentin starts being formed at time of eruption
Definition
true
Term
the rim of orbit is made up of frontal, maxillary and zygomatic bones
Definition
true
Term
sharpeys fibers are part of PDL attached to bone or cementum
Definition
ttrue
Term
lobes are centers of formation that develop into teeth
Definition
true
Term
accessory muscle of mastication
Definition
buccinator
Term
** the ___ nerve is not a branch of the facial VII nerve
Definition
mylohyoid
Term
mumps is an infection of the ___ gland
Definition
parotid
Term
when someone has opened to wide and cant close it is bc the ______ is preventing movement
Definition
articular eminence
Term
the condyle sit in the ___ fossa
Definition
mandibular
Term
which muscle does not elevate the mandible
Definition
lateral pterygoid
Term
when someone has opened too wide and cannot close
Definition
subluxation
Term
when the tmj moves it can
Definition
rotate and glide
Term
the ____ is not a major salivary gland
Definition
lacrimal
Term
most powerful muscle of mastication
Definition
masseter
Term
the digastric muscle is formed from the ___ brachial arches
Definition
1st and 2nd
Term
the ___ glands are located below and toward the posterior part of the body of the mandible
Definition
submandibular
Term
the tmj is lubricated by
Definition
synovial fluid
Term
the ___ glad produces 60-65% of the saliva
Definition
submandibular
Term
minor salivary glands are not found in the
Definition
anterior part of the palate
Term
____ can cause TMJ problems
Definition
subluxation
bruxism
arthritis
Term
the chords tympani nerve caries
Definition
taste fibers from anterior 2/3 of tongue
parasympathetic fibers to submandibular gland
motor fibers to digastric muscle
innervation to the lacrimal glands
Term
the ___ cranial nerve affects more areas of the body than any other
Definition
vagus
Term
which cranial nerve is NOT involved in eye movement
Definition
vagus
Term
maxillary vein is formed from a network known as pteygoid plexus
Definition
true
Term
the 2 major parts of the NS are the CNS and ANS
Definition
false
Term
the sternocleidomastoid muscle tilts and rotates the head
Definition
true
Term
the carotid veins are the main veins draining the head
Definition
false
Term
the glands of von ebner are minor salivary glands
Definition
true
Term
the submandibular gland produces about 25% of the total saliva
Definition
false
Term
numbness of the lower lip could be due to a damaged mental nerve
Definition
true
Term
the parotid duct pierces the buccinator muscle
Definition
true
Term
the __ duct is opposite the max 2nd molar
Definition
stensons
Term
there are ___ pairs of cranial nerves
Definition
12
Term
there are ___ pairs of spinal nerves
Definition
31
Term
the sympathetic NS
Definition
increases respirate rate
increases blood flow to muscles
increases heart rate
dialates pupils
Term
the articular disc is thinnest
Definition
in the middle
Term
the __ duct empties under the tongue in the lingual carnuncle
Definition
whartons
Term
the ___ gland is located lateral, posterior and medial to the ramus
Definition
parotid
Term
the muscle that can pull the condyle posteriorly
Definition
temporalis
Term
calcium deposits which can black salivary ducts
Definition
sialoliths
Term
blood goes fro the right ventricle to the
Definition
pulmonary artery
Term
the ___ carries deoxygenated blood
Definition
pulmonary artery
jugular
Term
which is not part of the tmj
Definition
lingula
Term
the buccinator muscle is innervated by the ___ nerve
Definition
facial
Term
the masseter muscle is innervated by the
Definition
trigeminal
Term
most intrinsic muscles of the tongue are innervated by the ____ nerve
Definition
hypoglossal
Term
the inferior alveolar artery is a branch of the ___ artery
Definition
maxillary
Term
the ___ nerve is not a division of the trigeminal nerve
Definition
facial
Term
the digastric muscle is innervated by the
Definition
trigeminal and facial
Term
afferent nerves transmit motor impulses from the brain to the muscles
Definition
false
Term
glands which have ducts are known as exocrine glands
Definition
true
Term
the muscle that surrounds, compresses and closes the lips is the orbicularis oculi
Definition
false
Term
the external pterygoid muscle moves the mandible in lateral excursions
Definition
true
Term
the insertion of a muscle is attached to the least movable structure
Definition
false
Term
the PNS decreases glandular secretion
Definition
false
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