DA Fun Facts (randomized) Flashcards
The groove pattern for the mandibular second molar is consider a ____
Cross (+) pattern
Continued eruption of a tooth through the surrounding tissue makes the clinical crown appear ____
longer
The number of lobes that form the anterior teeth is ____
4
Accessory pulp canals may contain ____ tissue
nervous and vascular
Accessory pulp canals may be found in ____ of molars
furcation areas
The main component of enamel is ____
inorganic matter (NOT collagen)
____ has measurement that is nearly identical for Inciso-Cervical versus Mesio-distal
Maxillary central incisor
____ has GREATEST cervical line curvature (on mesial) of any other tooth
Maxillary central incisor
True or False: Maintenance of the epithelial attachment is a function of the periodontal ligament
False - It is NOT a function of the PDL
The direction of enamel rods in permanent teeth in the cervical third is in a ____ direction
gingival
The crown of the mandibular second molar inclines to the ____
mesial and lingual
The occlusal outline of a mandibular first molar is a ____
pentagon
The ____ has the most pronounced developmental marginal groove of any max tooth
maxillary 1st premolar (mesial marginal developmental groove)
Facial view of maxillary molars the apex of the lingual root is in line with the ____ of the tooth
facial groove
The ____ from a proximal view tends to be positioned with the most nearly vertical axis
maxillary canine
____ has the LARGEST FL crown dimension of ANY other MANDIBULAR tooth
Mandibular 1st molar
____ plays the greatest role in discluding the posterior teeth in latero-protrusive movement
Anterior guidance
The smallest root of the maxillary molar is the ____
distofacial
Primary molars differ from permanent molars in that their roots are ____
more divergent
____ separates cusp ridges from marginal ridges
developmental grooves
The molar that has the most distinct transverse ridge separating the mesial fossa is the ____
Mandibular 1st molar
____ has fossae that are closest in size compared to any other posterior tooth
Maxillary 2nd premolar
____ are the only mandibular teeth that are wider mesio-distally than facio-lingually
Mandibular Molars
The principle muscles that retrude the mandible are the ____
posterior fibers of the temporalis
Accessory pulp canals allow the pulp tissue to ____
communicate with the PDL space
The primary ____ does NOT look like any permanent tooth
Mandibular 1st molar
____ cusp tip located facial to lingual axis
Maxillary canine
The height of contour is in the ____ for the facial surfaces of all teeth
gingival 1/3
____ covers the articulating osseous structures of the TMJ
Dense, avascular, fibrous connective tissue
The primary and permanent ____ is the most bilaterally symmetrical tooth
mandibular central incisor
The crown form of canines from a facial view is ____
pentagonal
____ has GREATEST F-L crown dimension of any ANTERIOR tooth
Maxillary canine
Calcification of the primary roots is normally completed at ____
3-4 years of age
____ is the predominant connective tissue for periodontal ligament fibers
Collagen
____ has mesio-distal measurement that is nearly identical to facio-lingual. Closest of all
Maxillary lateral incisor
All ____ teeth (12) generally have cingulums
anterior
teeth # ____ and ____ are the non molar teeth having the sharpest demarcation between pulp chamber & canal
5 and #12 (Maxillary 1st premolars)
The ____ occurs at the junction of the dental papilla & the inner enamel
DEJ
____ has longest root of any other tooth
Maxillary canine
The primary ____ has the smallest faciolingual crown dimension
primary mandibular central incisor
____ has the LONGEST ROOT length of any MANDIBULAR tooth
Mandibular canine
The premolar that has a longer mesio-facial cusp ridge than disto-facial cusp ridge is the ____
maxillary 1st premolar
____ most symmetrical crown
Mandibular central incisor
The tooth that is most likely forced into the maxillary sinus during an extraction is the ____
maxillary 1st molar
The mesiolingual developmental groove on tooth # 21 originates from the ____
occlusal pit
The physiologic rest position is established when the ____
muscles of mastication are in tonic equilibrium
The disk of the TMJ is moved forward principally by the ____
lateral pterygoid
____ from an occlusal view are frequently heart shaped because the are missing the DL cusp
Maxillary 3rd Molars
The lower compartment of the tmj is located between the ____ and the ____
condyle, disc
In a healthy mouth the alveolar process is thinnest around the ____
facial of the mandibular central incisors
The apex of a tooth is fully formed ____ after it erupts in the mouth
2-3 years
In delayed resorption of primary incisors the permanent incisors usually erupt ____
lingually
A crown of the maxillary first molar has a ____ distolingual groove than the second molar
shorter
The percentage of dentin that is organic is ____
20-30%
The ____ of an anterior tooth is the first to calcify
incisal ridge
____ ONLY premolar with a lingual groove
Mandibular 2nd premolar (Y type)
The ____ and ____ have a mesial concavity that makes it difficult to adapt a matrix band
maxillary 1st premolar and mandibular 1st molar
The mesiofacial and distolingual angles from the occlusal outline tend to be ____ angles
acute
Other than 3rd molars the tooth that is most often congenitally missing is the ____
maxillary lateral incisor
The facial masticatory mucosa (attached gingival) is narrowest for the mandibular first premolar
mandibular 1st premolar
____ has the LONGEST root of any other molar
Mandibular 1st molar
Periodontal ligament fibers support the tooth connecting to the dental alveolar bone via the ____
cementum
2 key features that differentiate a mandibular 1st & 2nd molar are the number of ____ and number of ____
developmental grooves, cusps
In Posselt’s envelope of motion ____ is the most superior point
Maximum intercuspal position
Marginal ridge heights for posterior teeth are generally more occlusal on the ____ than on the ____
mesial, distal
The groove pattern for the mandibular first molar is considered a ____
Y (dryopethicus) pattern
True or False: The epithelial attachment is always an actual part of a tooth’s periodontium
TRUE
Tooth contact almost exclusively determines ____
intercuspal position
There are a total of ____ teeth in the permanent dentition that normally have cingulums
12
The TMJ has ____
2 synovial cavities
True or False: The mandibular central incisors have contact points at the same incisocervical level
TRUE
The usual overjet is ____
2-4 mm
The bifurcation for the mandibular canine roots when present creates a ____ and ____ root
facial, lingual
The oblique ridge of maxillary molar forms the ____ boundary of the central fossa
distal
The mesial surface of the crown of the ____ is almost parallel to the long axis
mandibular canine
The primate space develops in the maxillary primary dentition between the ____ and ____
lateral incisor, canine
The mesio-distal width of the mandibular lateral incisor is ____ than the mandibular central incisor
wider
More of the occlusal surface can be seen from the mesial than distal for a ____
Mandibular 1st premolar
When the mandible moves from centric occlusion to edge to edge the condyles move ____
forward and downward
From the facial or lingual view canines have a ____ outline
pentagonal
The primary second molar exhibits ____ cusps than the primary first molar
more
The non-molar tooth that most frequently exhibits three roots is the ____
maxillary 1st premolar
____ have proximal contacts at approximately the same levels on mesial & distal
mandibular central incisors
____ GREATEST OVERALL total tooth length
Maxillary canine (tied with mandibular canine according to Dr. Arcoria)
____ occurs when the mastication muscles are in tonic equilibrium
Physiologic rest position
The smallest cusp of the mandibular 1st molar is the ____
distal cusp
____ has cusp heights closer in height to each other than any other PREMOLAR
Maxillary 2nd premolar
The upper compartment of the tmj is that space between the ____ and the ____ and ____
disc, articular fossa, eminence
The primary ____ resembles a premolar
Maxillary 1st molar
Occlusal view the greatest faciolingual diameter of a mandibular 2nd molar is in the ____
mesial 1/3
The cervical ridge is most prominent for primary maxillary teeth on the ____
MF surface of the 1st molar
The cross section of the mandibular canine at the CEJ is ____ but wider mediodistally at the ____
ovoid, facial (labial)
The ____ molar is the molar that most frequently has only 3 cusps
Maxillary 3rd
The lingual cusp of the mandibular 1st premolar in normal occlusion contacts what?
does not occlude with anything
The primary ____ has a crown that somewhat resembles a permanent premolar
maxillary 1st molar
The tooth with the longest root is the ____
Maxillary canine
The premolar with the steepest cusp inclines is the ____
maxillary 1st premolar
The cusp tip of the primary canine is generally off set to the ____
distal
The Y type mandibular premolar has ____ facial and ____ lingual cusps
1, 2
____ periodontal ligament fibers are most likely to be found in the middle 1/3 of the root
Oblique
Supernumerary teeth when seen in the maxilla are usually found between the ____ or as ____
central incisors, 4th molars
____ ONLY premolar with a central fossa
Mandibular 2nd premolar (Y type)
The distobuccal cusp of the mandibular molars occludes in the ____ of the maxillary molars
central fossa
The contact between a max central and lateral incisor makes the lingual embrasure ____ than the facial
larger
The Y type mandibular 2nd premolar has ____ of occlusal pits as the mandibular 1st molar
the same number
____ mesio-distal crown width SMALLEST of any MAXILLARY tooth
Maxillary lateral incisor
The primary tooth that has the most distinctly prominent facial cervical ridge is ____
Mandibular 1st molar
From a facial view the crown of a primary canine has a mesio-incisal slope ____ than the distoincisal
longer
____ are the only anterior teeth that are wider mesio-distally than facio-lingually
Maxillary incisors
The mesio-distal width of the maxillary lateral incisor is ____ than the maxillary central incisor
narrower
The primary ____ most often bears the greatest resemblance to a premolar
Maxillary 1st molar
Physiological rest position is also known as ____
Postural position
Perikymata are a result of ____
normal enamel apposition
The ____ has its mesial marginal ridge more cervical than the distal
Mandibular 1st premolar
The size and position of the cusps are more identical for the ____ maxillary premolar than the ____ maxillary premolar
2nd, 1st
All premolars are wider ____ than ____
faciolingually, mesiodistally
____ LARGEST Occluso-cervical crown dimension of any MANDIBULAR molar
Mandibular 1st molar
The ____ angle of the maxillary lateral has the greatest convexity of all maxillary anterior teeth
distoincisal
____ crown twisted on root
Mandibular lateral incisor
____ has mesial marginal ridge that is more cervical than distal marginal ridge
Mandibular 1st premolar
____ has sharpest set of incisal angles (mesial and distal)
Mandibular central incisor
____ has incisal edge lingual to long axis
Mandibular canine
The side shift of the mandible is also known as the ____
Bennet movement
All teeth have ____ (positive anatomy feature)
distal and mesial marginal ridges
The anterior tooth that most likely would demonstrate a lingual pit cavity is ____
maxillary lateral incisor
The direction of primary enamel rods in the cervical third is in an ____ direction
occlusal
Mandibular molars have long axis of their root apices ____ and their crowns ____
facial, lingual
____ is a ligament guided position
Centric relation
Mandibular 1st molar has three ____ cusps
facial
____ MESIAL root has GRATEST F-L dimension of any other root
Mandibular 1st molar
The pulp chamber of a mature tooth contains ____
blood vessels, nerves and lymph vessels
The mandibular canine has a ____ cingulum than the maxillary canine
less prominent
____ only tooth with mesial marginal ridge groove and mesial corwn concavity and mesial root depression
Maxillary 1st premolar
Except for third molars the ____ exhibits the most deviation in crown morphology
maxillary lateral incisors
Bennett movement occurs during the ____
earliest stage of lateral movement
The ____ provide some degree of protection for lips, cheeks and tongue
overjet and overbite
____ SMALLEST crown dimensions of ANY tooth
Mandibular central incisor
Periodontal ligament fibers are made up of ____
collagen
The occlusal outline for the mandibular 1st premolar occlusal view is ____
diamond shaped
The center of the ____ on a Maxillary 1st molar is at the same level with the marginal ridge
oblique
The primary ____ is the primary tooth that generally has an oblique ridge
maxilary 2nd molar
The ____ is the only premolar that frequently only has one pulp horn
Mandibular 1st premolar
Viewed from the occlusal the 4 ____ are aligned in a straight line
mandibular posterior teeth
____ is another term for intercuspal position
Centric occlusion
____ is a muscle guide position
Pysiological rest position
____ ONLY premolar with multiple lingual cusps
Mandibular 2nd premolar (Y type)
The primary teeth that differ most from permanent teeth are the ____
first molars (particulary mandibular)
The mandibular 1st PREmolar, the mesial marginal ridge located more ____ than the distal
cervical
The lingual cusp of the ____ is approximately 2/3rds the height of the facial cusp
mandibular 1st premolar
The occlusal outline from an occlusal view for the maxillary first molar is ____
rhomboidal
The mesiolingual cusp of the ____ is the largest and longest posterior cusp
Maxillary 1st molar
The ____ are the only teeth that have potential of contacting both anterior and posterior teeth
Maxillary canine, mandibular 1st premolar
The developmental groove between the df cusp and the dl cusp of the mandibular 1st molar is called the ____
distofacial groove
The ____ of a Maxillary lateral incisor is an anatomical feature that complicates root planning
DL groove
____ has GREATEST cervical prominence of any ANTERIOR tooth
Maxillary canine
The ideal position and height of lingual cusps of MAND 1st molar accommodates a ____ movement
working movement
The occlusal table of a posterior tooth makes up ____ of the total facio-lingual dimension
55-65%
The ____ is the posterior tooth that has the greatest cervico-occlusal crown height
maxillary 1st premolar
____ has GREATEST root separation of ANY OTHER tooth
Mandibular 1st molar
The ____ of maxillary molar is the only one that is not part of the molar cusp triangle
distolingual cusp
____ is the most symmetrical POSTERIOR tooth
Maxillary 2nd premolar
The lingual cusp of a ____ is similar in development to the cingulum of a canine
Mandibular 1st premolar
The mandibular primary primate space is located between ____
canine and 1st molar
The non-working condyle moves ____
downward, forward and medial
Primary teeth are ____ than permanent teeth are consequently are more worn
less mineralized
____ only tooth with a mesio-lingual groove
Mandibular 1st premolar
The largest root of the maxillary molar is the ____
palatal
The ____ has the greatest facio-lingual axial inclination
Maxillary central incisor
The first succedanous tooth to erupt in the mouth is the ____
permanent mandibular central incisor
Mesiolingual groove is an identifying characteristic for the ____
Mandibular 1st premolar
____ has a cruxiform occlusal pattern
Mandibular 2nd molar
Facial view of a primary mandibular 1st molar the CEJ is most apically positioned toward the ____
mesial 1/3
____ has distal contact centered both Inciso-cervically and facio-lingually
Maxillary lateral incisor
____ has a distal bulge
Maxillary canine
Accessory pulp canals may be found in the ____ of the root
cervical 1/3
The function of the pulp is to ____
form and supply nutrients and transmit sensory stimuli
The usually pattern of eruption for primary teeth is:
centrals, laterals, 1st molars, canines, 2nd molars
____ is the only primary posterior tooth to have oblique & transverse ridges &DL groove
Primary maxillary 2nd molar
The lingual cusp of the maxillary premolars is off set to the ____
Mesial. The 1st more than the 2nd
The primary ____ exhibits a prominent cervical ridge both on the facial and lingual surfaces
maxillary central incisor (tooth F)
____ only premolar with longer mesial cusp ridge
Maxillary 1st premolar
In cross section the root of the mandibular canine is ____
irregularly oval
The primary mandibular 1st molar usually exhibits a ____ (negative anatomy on occlusal table)
mesial and distal triangular fossa
The ____ is the anterior-posterior curvature of the occlusal surfaces as seen in a facial view
Curve of Spee
The difference in space from the primary to the permanent dentition is ____
2-4 mm
The geometric form of anterior teeth when viewed from the proximal is ____
triangular
The____ ligament limits the extent of jaw opening
Temperomandibular ligament
Mandibular ____ and Maxillary ____ generally occlude with only one opposing tooth
Central incisors, third molars
Of the 3 furcations of a maxillary 1st molar the ____ is the furthest from the cervical line
distal
The ____ tends to taper toward the facial rather than toward the lingual
Maxillary 1st molar
Mamelons that remain beyond the age of 10 generally indicate an ____
open bite
The ____ periodontal fibers travel from one root to an adjacent root surface
transseptal
The mesiolingual cusp of the Maxillary molars occludes in the ____ of the mandibular molars
central fossa
The apex of the triangular-shaped boundary of the interproximal space is the ____ of the teeth
contact area
In the rare event of a second canal for a mandibular 1st premolar it is most likely located to the ____
lingual
The softest dental tissue is ____
cementum
The ____ has a distal concavity that can pose special problems in matrix placement
Maxillary 1st molar
A common trait of maxillary premolars is that their ____ cusps are off set to the mesial
lingual
The ____ has the greatest faciolingual diameter of the crown for all teeth
Maxillary 1st molar
The Bennett movement is the bodily shift of the mandible ____ the working condyle
toward
The thickest section of the articular disc when seen in the sagittal plane is the ____
posterior border
The ____ has two cusps that are of equal height
maxilary 2nd premolar
The ____ is a depression in the temporal bone, just anterior to the auditory canal
glenoid fossa
____ Proximal contacts at same level
Mandibular central incisor
When viewed from the occlusal the arrangement of the teeth are ____
parabolic
____ has greateast MD crown dimension of any ANTERIOR tooth
Maxillary central incisor
The mandibular centrals and laterals most frequently have concave areas on ____ root surfaces
mesial and distal
The ____ has a uniquely prominent triangular ridge
Mandibular 1st premolar
The cervical line of permanent teeth has the greatest depth of curvature on the ____ aspect of a tooth.
mesial
The ____ is an extrinsic muscle of the tongue that causes it to retract
styloglossus
The lingual concavity of the maxillary anterior teeth is most influenced by the ____
side shift of the mandible
The primate space develops in the mandibular primary dentition between the ____ and ____
Canine, 1st molar
The ____ has the longest root
Maxillary canine
The ____ periodontal ligament fibers reduces the likelihood of forceful impaction into the alveolus
Oblique
The non-molar tooth that most frequently has a mesial and distal pulp horn is the ____
maxillary central incisor
Of the 3 furcations of a maxillary 1st molar the ____ is the closest to the cervical line
mesial
____ distal contact is centered
Maxillary canine
____ are the only maxillary teeth that are wider mesio-distally than facio-lingually
Maxillary incisors
____ is the cemental union of 2 fully formed teeth that were originally separate entities
Concrescence
The ____ cusp of the maxillary 1st premolar is offset to the distal
facial
The primary ____ has the most distinct transverse ridge
primary mandibular 1st molar
This mesiolingual and distofacial angles from the occlusal outline tend to be ____ angles
obtuse
The largest cusp of the mandibular first molar is the ____
Mesiofacial
The ____ muscle isa muscle of mastication but is NOT an elevator of the mandible
lateral pterygoid
The mandibular canine is ____ mesiodistally than the maxillary canine
narrower
The incisal embrasure between the maxillary centrals is ____ than between the central and the lateral
smaller
The ____ ligament initiates translation of the condyle down the articular eminence
Temperomandibular ligament
The premolar that most frequently has a single central pit is the ____
Mandibular 2nd premolar
____ facio-lingually smallest of any posterior tooth
Mandibular 1st premolar
The teeth whose function is primarily biting are ____ and ____
incisors and canines
The primary spacing for the anterior teeth is most frequently caused by ____
growth of the dental arches
The number of lobes that form the posterior teeth coincides with the number of ____
cusps
Mandibular centrals distinguished by the cervical curvature, which is greater on the ____ than the ____
mesial, distal
____ are the only posterior teeth that are wider mesio-distally than facio-lingually
Mandibular Molars
Mandibular 1st molars usually have two canals in the ____ root
mesial
Caries stimulates the production of ____ dentin
tertiary
For multirooted teeth dentin continues to form MOST rapidly at the ____ and ____ of the pulp chamber
floor and roof
The ____ has frequently both a separate mesial and distal pit
Mandibular 1st premolar
The ____ is the anterior tooth that most frequently exhibits a bifurcated root
mandibular canine
The condyle on the working side generally rotates about a ____ and ____
vertical axis, translates laterally
____ is an excess of calcified tissue formation at the root apex
Hypercementosis
____ is closest of all MANDIBULAR TEETH in FL versus M-D diameter
Mandibular 1st premolar
For molar teeth the root canals join the pulp chamber ____
apical to the CEJ
The maxillary lateral incisor is usually ____ the maxillary central in root length
equal to or larger than
____ has SHORTEST root of any mandibular tooth
Mandibular 3rd molar
The premolar that is most likely to have a crescent-shaped central developmental groove is ____
Mandibular 2nd premolar
____ has distal contact that farthest cervically of any INCISOR
Maxillary lateral incisor
____ makes a C shape from crown tip to root apex when viewed proximally
Mandibular canine
The cross sectional outline at the cervical is roughly triangular for the permanent ____
maxillary 2nd molars
The highest and sharpest cusp on a primary mandibular first molar is the ____
mesiolingual
The ____ muscles are primarily responsible for protrusive movement
lateral pterygoid
At mid root cross section of first molars the largest is the ____
mesial of the mandibular
When compared to a maxillary canine the mandibular canine has proximal contact areas located more ____
incisally
The primary _____ generally exhibits cusp of Carabelli
Maxillary Second Molar
The hardest dental tissue is ____
enamel
Mandibular 1st molar usually has ____ roots and ____ canals
2 roots, 3 canals
The mesiolingual developmental groove on tooth # 21 extends onto the ____
proximal surface
____ is a developmental abnormality characterized by the presence of fewer teeth than usual
Oligodontia
Interradicular fibers are not ____ fibers
gingival
The cervical cross section of the ____ exhibits a kidney shaped root outline
maxillary 1st premolar
The ____ has the greatest m-d diameter of all molars
Mandibular 1st molar
The TMJ is protected by ____, ____, ____, and ____
sinovial fluid, fibrocartilage, ligament suspension and masticatory muscles
A transverse ridge results from the union of the ____ and ____ triangular ridges
facial, lingual
____ has straightest mesial alignment of crown to root
Mandibular canine
The shortest interdental papilla is between the ____
mandibular 2nd premolar and 1st molar
The cervical cross section of the ____ exhibits a kidney shaped pulp chamber floor
Mandibular 1st premolar
____ has longest CROWN dimension of any other tooth
Mandibular canine
A primary molar lacks an identifiable ____
root trunk
The ____ lobe of the maxillary canine includes the cusp tip
middle facial
The dentin that is most highly mineralized is ____
intratubular (peritubular) dentin
When a 4th pulp canal is present in a maxillary first molar it is located in the ____ root
Mesiofacial
Approximately ____ of permanent root formation is completed at the time the tooth erupts
50%
____ has GREATEST distal root inclination of any other tooth
Mandibular 3rd molar
Teeth are in contact in intercuspal position during ____
Non-masticatory swallowing
The oblique ridge connects the ____ and ____ cusps
mesiolingual, distofacial
____ have the greatest morphological variation. ____ have the second most morphological variation
3rd Molars, Maxillary lateral incisors
Viewed from the occlusal the basic coronal outline of a mandibular second premolar is ____
pentagonal
____ LARGEST M-D crown dimension of ANY other tooth
Mandibular 1st molar
The obtuse corners coincide with the direction of the ____ ridge
oblique
Ligaments associated with the TMJ serve to ____
protect surrounding and supporting tissues from damage
The most caries prone surfaces of molars are the ____ and the ____
lingual of maxillary, facial of mandibular
The facial surfaces of mandibular molars are located ____ the border of the ascending ramus
medial to
The ____ most often is in abnormal relation and contact with adjacent teeth
maxillary lateral incisor
The ____ of the periodontal ligament provide the major support for a tooth during function
oblique fibers
The non-molar that is least likely to have a bifurcated root is the ____
maxillary central incisor
____ most variation of all posterior teeth in facial versus lingual cusp height
Mandibular 1st premolar
The ____ has a continuous convex facial surface from incisal to apical end
mandibular canine
The ____ has a wider m-d width toward the lingual than toward the facial
Maxillary 1st molar
In cervical cross section the root of the mandibular canine is flattened in a ____ direction
mesiodistal
Contraction of the ____ produces forward movement of the condyle from the articular fossa
lateral pterygoid
The maxillary first primary molar has a root that resembles a typical permanent ____
molar
The last primary teeth to erupt are the ____
maxillary 2nd molars
____ has MOST crown shape variations
Maxillary lateral incisor
____ have the most distinct and deepest lingual fossa’s of all anterior teeth
maxillary lateral incisors
The ____ generally have the most prominent marginal ridges of all anterior teeth
maxillary lateral incisors
The roots of the maxillary second molar tend to be less ____ and have greater ____ inclinations than the first molar
divergent, distal
The ____ is the prime mover in effecting a left working movement
right lateral pterygoid
____ closest in size FL vs MD of any MAXILLARY POSTERIOR tooth
Maxillary 1st molar
