300 Facts Flashcards
What teeth have the primary function of biting?
Incisors and canines
What are the only anterior teeth that are wider mesio-distally than facial-lingually?
Maxillary incisors
What non-molar tooth most frequently has a mesial and distal pulp horn?
Max. Central incisor
True or false… the Max. Central incisor has the greatest MD crown dimension of any teeth?
False. It has the greatest MD crown dimension of all ANTERIOR teeth
What teeth generally only occlude with one other tooth?
Mandibular central incisors and maxillary third molars
What tooth has the smallest crown dimension out of any tooth?
Mand. Central incisors
True or false… the Mand. Lateral incisors have the appearance of a twisted crown on root.
True
What tooth has the longest root?
Max. Canines
What anterior tooth most frequently exhibits a bifurcated root?
Mandibular canines
True or false… the MD width of mandibular lateral incisors are narrower than MD width of mandibular central incisors
False. They are wider
What maxillary tooth has the smallest MD crown?
Maxillary lateral incisor
What tooth has the most crown shape variation?
Maxillary lateral incisor
What tooth has the most symmetrical crown?
Mandibular central incisor
True or false… mandibular central and lateral incisors do not have concave areas on the M and D surfaces of their roots
False, they frequently do have concavities
What is the first succedaneous tooth to erupt?
Mandibular central incisor
What is usually the first tooth to erupt?
1st molars
True or false.. the lingual cusp of maxillary first premolars are off set to the distal
False. They are set to the mesial
True or false… the lingual cusp is off set to the mesial more so on the first maxillary premolar than the second
True
What nonmolar tooth most frequently exhibits three roots?
Maxillary first premolar
What tooth has the longest crown dimension out of any teeth?
Mandibular canine
What tooth of the mandibular teeth has he longest root?
Mandibular canine
What is the facial or labial shapes of canines?
Pentagonal
What tooth has the sharpest Incisal angles?
Mandibular central incisors
Of all the anterior teeth, which has labio lingual width that are closest to their mesial distal width?
Maxillary central
Which tooth has measurement that is nearly identical cervico-incisally/occlusally, vs mesiodistally?
Max. Central incisor
Developmental anomalies are most often seen in what three teeth/
Maxillary laterals, third molars, and mandibular 2nd premolars
Calcification begins in utero __ - __ weeks and by ___-___ weeks, all have begun to calcify
13-16
18-20
Is cementum thicker on the permanent or primary teeth?
Permanent
True or false… mandibular central incisors have proximal contacts at the same level
True
Which, the maxillary or mandibular canine has contact points located more Incisal?
Mandibular canine
True or false… maxillary canines are wider mesio-distally than they are facial lingually
False
Which tooth has the greatest overall tooth length?
Maxillary canine
What is the only tooth that contacts both anterior and posterior teeth?
Canines
Out of all the maxillary teeth, which has the most pronounced developmental marginal groove?
Maxillary first premolar
What posterior tooth has the greatest cervical-occlusal crown height?
Maxillary first premolar
Which, the maxillary first or second premolar, has the most identical cusps?
The size and portion of the cusps are more identical for the second maxillary second premolar than the first
True or false… the maxillary second premolar has two cusps that are of equal height
True
What is the only premolar with a central fossa?
Mandibular second premolar
How many cusps does the Y type mandibular second premolar have?
Three. One facial and two lingual
Out of all the anterior teeth, which tooth has the greatest labial-lingual dimension?
Maxillary canine
What tooth has the longest root?
Maxillary canine
True or false… mandibular incisors frequently have concavities on their mesial and distal root surfaces
True
Which is wider mesial-distally… maxillary lateral or maxillary central incisors
Maxillary central
Which anterior tooth is most likely to demonstrate a lingual pit cavity?
Maxillary lateral incisor
Which incisor has its distal contact most cervically?
Maxillary lateral
Which primary tooth has the most distinctly prominent facial cervical ridge?
Mandibular first molar
Which is longer in the primary maxillary canine, the mesial or distal cusp slope?
Mesial
Which teeth are generally less mineralized, primary or permanent?
Primary
Which primary tooth does not resemble any permanent tooth?
Primary first mandibular molar
In a primary maxillary first molar, which root is the shortest?
Distal root
Which, primary or secondary maxillary first molars have shorter root trunks?
Primary maxillary first molars have shorter root trunks (the roots trifurcation close to cervical line)
Which cusp on the primary first maxillary molar is the most prominent?
Mesiolingual cusp
You have a handful of primary molars. What is the most obvious indicator to identify the maxillary first molar?
Large convexity on buccal at cervical third
What tooth has the greatest cervical curvature (on mesial) of any other tooth?
Maxillary central incisor
What non molar tooth is least likely to have a bifurcated root?
Maxillary central incisor
Which tooth has a lingual mesial groove?
Mandibular first premolar
Which tooth has a lingual groove?
Mandibular second premolar
Which tooth has a mesial groove reaching into a mesial groove on the crown?
Maxillary first premolar
Which is taller, the buccal cusp of the mandibular first premolar or the buccal cusp of the mandibular second premolar?
The first premolar
Which is wider mesiodistal, the mandibular first or second premolar?
Mandibular second premolar
On the lingual aspect of the mandibular second premolar, which cusp is most prominent?
Mesial-lingual cusp
Of the mandibular premolars, which has a buccal cusp that is more centered over the root?
Mandibular first premolar
True or false… there is a mesiolingual developmental groove on mandibular second premolar
False
On the mandibular second premolar, can you see more of the occlusal surface from the mesial or distal aspect?
Distal aspect
In the mandibular second premolar, is the lingual developmental groove more distal or mesial?
Distal
In the mandibular second premolar, which lingual cusp is wider mesiodistally?
Mesiodistal lingual cusp
Are contact points more buccal or lingual?
Buccal (facial)
In general where are the contact points of anterior teeth?
Incisal one thrid
In general, where is the location of the contact points between posterior teeth?
Junction of Incisal and middle thirds
In nearly all teeth the (facial/lingual) embrassure is larger than the (facial/lingual) embrassure. What is the exception?
In nearly all teeth the lingual embrassure is larger than the facial embrassure.
Except between the maxillary first and second molars
What is an effect of under contouring and over contouring teeth?
Under contouring teeth can result in food impaction
Over contouring can result in less gingival stimulation and increased plaque retention
How many roots do most maxillary first premolars have?
Two
On the buccal aspect of the maxillary first premolar, which is more concave, the mesial or distal outline?
The mesial outline is more concave
True or false… The incisal embrassure between the maxillary central is smaller than the embrassure between the central and lateral.
TRUE
Out of all of the anterior teeth, which has the most prominent lingual fossa?
Maxillary lateral incisor
What tooth has the greatest facial-lingual inclination?
Maxillary lateral incisor
What maxillary anterior tooth has the greatest convexity in its distoincisal angle
Maxillary central
Which primary tooth generally exhibits a cusp of carabelli?
Primary second molar
Mamelons that remain beyond the age of 10 generally indicate…
An open bite (or malocclusion)
Which primary tooth generally has an oblique ridge?
Primary maxillary second molar
Which tooth in the primary dentition has more cusps the first or second molar?
Primary second molar
The contact between the maxillary central incisor and maxillary lateral incisor makes the lingual embrassure (Larger/smaller) than the facial embrassure?
Larger
Which incisal embrasure is larger, the incisal embrasure between the maxillary central incisors or the incisal embrasure between the maxillary central and lateral incisors?
Incisal Embrasure between the central and lateral
Describe the distal contact on the maxillary lateral incisor
It is centered both inciso-cervically and facial-lingually
Out of all of the anterior teeth, which generally have the most prominent marginal ridges?
Maxillary lateral incisors
Except for the third molars, which tooth exhibits the most deviation in crown morphology?
Maxillary lateral incisors
Other than the third molars, which tooth is most often congenitally missing?
Maxillary lateral incisors
Which canine has a more prominent cingulum?
Maxillary canine
The facial cusp of the maxillary first premolar is off set to the distal or mesial?
Distal
What posterior tooth is the most symmetrical?
Maxillary second premolar
Which premolar has cusp heights that are closest to each other?
Maxillary second premolar
On the mandibular first premolar, which marginal ridge (mesial or distal) is located most cervically?
Mesial marginal ridge
Which premolar has a uniquely prominent triangular ridge?
Mandibular first premolar
Which premolar is the only premolar with a lingual groove?
Mandibular second premolar
What portion of an anterior tooth is the first to calcify?
Incisal ridge
In the maxillary first molar, what structure forms the distal boundary of the central fossa?
Oblique ridge
Which root on the maxillary first molar is the largest?
Lingual root
Which root on the maxillary first molar is the smallest?
Distofacial root
In comparison to the maxillary first molar, the maxillary second molar has roots that tend to be [more/less] divergent and have [greater/lesser] distal inclinations
Less
Greater
How many roots does the mandibular first molar have? How many canals?
Two roots with three canals
What is the only premolar that may have multiple lingual cusps?
Mandibular second premolar
What cusp of the maxillary molars occludes in the central fossae of the mandibular molars?
Mesiolingual cusp
What are the only posterior teeth that are wider mesiodistally than facio-lingually?
Mandibular molars
Out of all of the mandibular teeth, which teeth are the only ones that are wider mesiodistally than faciolingually?
Mandibular molars
The occlusal outline of the mandibular first molar takes what shape?
Pentagon
The occlusal outline (from an occlusal view)of the maxillary first molar takes what shape?
Rhomboidal
When a fourth pulp canal is present in a maxillary first molar, it is located in the ______ canal
Mesio-facial
Out of all of the maxillary posterior teeth, which is closest in size faciolingually vs mesiodistally?
Maxillary first molar
The premolar that most frequently has a single central pit is the ____
Mandibular second premolar
On the mandibular first molar, the developmental groove between the distobuccal cusp and the distolingual cusp is located ____
Distofacially
How many buccal cusps does the mandibular first molar have?
Three
Which molar has the longest root?
Mandibular first molar (mesial root)
What tooth has the greatest root separation?
Mandibular first molar
What tooth is the most likely to be forced in the maxillary sinus during an extraction?
Maxillary first molar
On the maxillary first molar, which cusp is the only one not part of the molar cusp triangle?
Distolingual cusp
Out of all of the posterior teeth, which has fossa that are closest in size?
Maxillary second premolar
True or false… the mandibular first premolar frequently has a separate mesial and distal pit
True
What groove is an identifying characteristic of the mandibular first premolar?
Mesiolingual groove
The lingual cusp of the mandibular first premolar is approximately ___ the height of the buccal cusp
2/3
On the maxillary first molar, the oblique ridge connects what two cusps?
Mesiolingual and distobuccal
The mandibular first molars usually have how many mesial canals?
2
Which molar has the greatest mesiodistal diameter?
Mandibular first molar
What tooth has the greatest distal root inclination of any other tooth?
Third molars
Which molar most frequently has three cusps?
Maxillary third molars
How many lobes form the anterior teeth?
4
When viewing anterior teeth from a mesial or distal view, the crown has what geometric form?
Triangle
What is the smallest cusp of the mandibular first molar?
Distal cusp
What is the largest cusp of the mandibular first molar?
Mesio-facial cusp
The mesiofacial and distolingual angles from the occlusal outline tend to be ___ angles
Acute
Of the 3 furcation of the maxillary first molar, the ____ is the closest to the cervical line
Mesial
Of the three furcations of the maxillary first molar, the ___ is the furthest from the cervical line
Distal
The center of the oblique ridge on a maxillary first molar is at the same level with the ____
Marginal ridge
On the maxillary second molar, the ____ cusp is the only one that is not part of the molar cusp triangle
Distolingual
The groove pattern for the mandibular first molar is considered a ____ pattern
Y (dryopethicus)
The shortest interdental papilla is between the _____ and ____ teeth
Mandibular second premolar and mandibular first molar
The cross sectional outline at the cervical is roughly ____for the permanent maxillary second molar
Triangular
Viewed from the occlusal, the basic coronal outline of a mandibular second premolar is ____
Pentagonal
The premolar that is most likely to have a crescent-shaped central developmental groove is the ____
Mandibular second premolar
The ___ type mandibular second premolar has the same number of occlusal pits as the ______ ____ molar
Y
Mandibular first
The shortest interdental papilla is between what two teeth?
Mandibular second premolar and mandibular first molar
On the maxillary first molars, the mesiolingual and distofacial angles from the occlusal outline tend to be ____ angles
Obtuse
The obtuse angles of the maxillary first molar coincide with the direction of the ____
Oblique ridge
What tooth has the widest M-D crown dimension of ANY other tooth?
Mandibular first molar
Out of all of the mandibular teeth, which has the largest FL crown dimension?
Mandibular first molar
Which tooth has an occlusal groove pattern of a cross (+)?
Mandibular second molar
The crown of the mandibular second molar inclines to the ___ and ____
Mesial and lingual
Which tooth has the greatest variation in crown morphology?
Third molars
Out of all the mandibular teeth, which has the shortest root?
Mandibular third molars
The distobuccal cusp of the mandibular molars occludes in the ____ of the maxillary molars
Central fossa
The maxillary first molar has a wider m-d width toward the ___ than the ___
Lingual
Buccal
Which tooth has the straightest mesial alignment of crown to root?
Mandibular canine
The maxillary canine has a ___ bulge
Distal
Which tooth has the longest root out of all the teeth?
Maxillary canine
The maxillary first molar tends to taper toward the ___ rather than the ____
Buccal
Lingual
Which cusp of the maxillary first molar is the largest and tallest?
Mesiolingual cusp
The most prove facial and lingual surfaces of molars are the ____ of maxillary and ____ of mandibular
Lingual
Buccal
On the mandibular first molar, the ___ root has the greatest buccal-lingual dimension of any other root
Mesial
A key feature that differentiates the mandibular first and second molar is the number of ___ and number of ____
Developmental grooves
And number of cusps
On the mandibular first premolar, more of the occlusal surface can be seen from the ____ than the ____
Mesial
Distal
The lingual cusp of the mandibular first premolar is similar in development to the ____
Cingulum of the canine
The maxillary first premolar has a ___ ___ that makes it difficult to adapt a matrix band
Mesial concavity
The premolar that has a longer mesial buccal cusp ridge than a distal buccal cusp ridge is the…
Maxillary first premolar
Which premolar has the steepest cusp inclines?
Maxillary first premolar
A common trait of maxillary premolars is that their lingual cusps are off set to the …
Mesial
The mandibular canine has an incisal edge ____ to long axis
Lingual
The mandibular canine makes a __ shape from crown tip to root apex
C
The maxillary canine’s cusp tip is located ____ to the long axis
Labial
Out of all the anterior teeth, which has the greatest cervical prominence?
Maxillary canine
Which teeth have proximal contacts at approximately the same levels on mesial and distal?
Mandibular central incisors
The maxillary lateral incisor’s root is usual equal to or larger than the ___
Maxillary central incisor
The primary function of the dental pulp is to…
Form dentin
the last primary teeth to erupt are the….
Primary maxillary second molars
The maxillary lateral incisor is most often in ____ relation and contact with adjacent teeth
Abnormal
The ____ groove of the maxillary lateral incisor is an anatomical feature that complicates root planning
Distolingual
Mandibular central incisor are distinguished by the cervical curvature, which is greater on the ____ than the ____
Mesial
Distal
The _____ have contact points at the same incisocervical level
Mandibular central incisors
The maxillary canine ___ contact is centered
Distal
The crown form of canines from a facial view is….
Pentagonal
Which tooth, when viewed from the proximal view tends to be positioned with the most vertical axis?
Maxillary canine
True or false…
The middle facial lobe of the maxillary canine includes the cusp tip
True
When present, the bifurcation of the mandibular canine roots create a ____ and ____ root
Lingual and labial
Which premolar most frequently is seen with only one pulp horn?
Mandibular first premolar
The facial attached gingiva is narrowest for which tooth?
Mandibular first premolar
Out of all the teeth, which has the greatest faciolingual diameter?
Maxillary first molar
Out of the mandibular molars, which has the largest occlusal-cervical crown dimension?
Mandibular first molar
Which are the only posterior teeth that are wider mesiodistally than buccal-lingually?
Mandibular molars
What are the only posterior teeth that are wider mesiodistally than facial lingually?
Mandibular molars
The cross section of the mandibular canine at the CEJ is ____ wider mesiodistally at the ___
Ovoid
Labial
Which is narrower mesiodistally, the mandibular canine or the maxillary canine?
Mandibular canine
The cervical cross section of a maxillary first premolar exhibits a ____ shaped root outline and pulp chamber
Kidney
The occlusal outline for the mandibular first premolar occlusal view is ____ shaped
Diamond
The mandibular first premolar has its mesial marginal ridge more ___ than the distal ridge
Cervical
The ___ cusp of the mandibular first premolar in normal occlusion does not occlude
Lingual
What is the only tooth with a mesio-lingual groove?
Mandibular first premolar
The maxillary first molar has a ____ concavity that can pose special problems in matrix band placement
Distal
On the maxillary first molar, In the facial view, the apex of the lingual root is in line with the ____ of the tooth
Facial groove
The mandibular canine has a continuous convex facial surface from ____ to ____ end
Incisal to apical
In cross section, the root of the mandibular canine is _____ shape
Irregular oval
The ____ surface of the crown of the mandibular canine is almost parallel to the long axis
Mesial
Which molar has the most distinct transverse ridge separating the mesial fossa?
Mandibular first molar
The facial surfaces of mandibular molars are located medial to the ….
Border of the ascending ramus
At mid root cross section of first molars, the largest is which root?
Mesial (from mandibular first)
Which is the only premolar with a longer mesial cusp ridge?
Maxillary first premolar
Which is the only tooth with mesial marginal ridge groove and mesial crown concavity and mesial root depression?
Maxillary first premolar
Which non molar tooth has the sharpest demarcation between pulp chamber and pulp canal?
Maxillary first premolar
The primary spacing for the anterior teeth is most frequently caused by …
The growth of the dental arches
Which primary tooth is the only primary posterior tooth to have oblique and transverse ridges and DL groove?
Primary second molar
The mandibular primary primate space is located between…
The mandibular canine and mandibular first molar
Which posterior tooth has the smallest buccal lingual dimension?
Mandibular first premolar
Out of all the mandibular teeth, which tooth has the closest similarity between MD and FL dimensions?
Mandibular first premolar
Which tooth’s occlusal surface forms a cross (crucifix form)?
Mandibular second molar
When in an occlusal view of the mandibular second molar, the greatest faciolingual diameter is located in what third?
Mesial 1/3rd
True or false… mandibular molars have long axis of their root spices facial and their crowns lingual
True
The mandibular first premolar has its mesial marginal ridge more ____ than the distal marginal ridge
Cervical
The mesiolingual developmental groove of a mandibular first premolar originates where? Where does it extend to?
Occlusal pit
Proximal surface
Maxillary third molars often form a heart shaped (in an occlusal view), why?
They are missing the distolingual cusp
Usually, when viewing a third molar from an occlusal view, it has a ___ shape
Rhomboid
When the mandible moves from CO to edge to edge, the condyles move…
Forward and downward
For multirooted teeth, dentin continues to form most rapidly at the …
Floor of the roof of the pulp chamber
The side shift of the mandible is also known as a ____ shift
Bennett
During a bennett shift, the non-working condyle moves….
Downward, forward, and medial
The dentin that is most highly mineralized is the ___ dentin
Peritubular
The softest dental hard tissue is
Cementum
The hardest dental tissue is…
Enamel
A transfer ridge results from the union of the ___ and ___, ____ ridges
Facial and lingual triangular
How many teeth in the permanent dentition have cingulums?
12 (all anterior teeth)
The thickest section of the articular disc when seen in a sagiittal plane is the ___
Posterior border
Which fibers of the PDL provide the major support for a tooth during function?
Oblique
The pulp chamber of a mature tooth contains…
Blood vessels and nerves
_____ plays the greates role in discluding the posterior teeth in a lateral-potrusive movement
Anterior guidance
For molar teeth, the root canals join the pulp chamber ___ to the CEJ
Apical
The ____ periodontal fibers travel from one root to an adjacent root surface
Transseptal
True or false… caries stimulates the production of tertiary dentin
True
Describe the curve of spee
The anterior-posterior curve
The height of contour is in the ____ third for the facial surfaces of all teeth
Gingival 1/3rd
The apex of a tooth is fully formed ___ years after it erupts in the mouth
2-3
Accessory pulp canals may be found in the ___ third of the root
Cervical
True or false… accessory pulp canals may contain nervous and vascular tissue
True
True or false, accessory pulp canals may be found in furcation areas of molars
True
True or false… maintenance of the epithelial attachment is a function of the PDL
False
Marginal ridge heights for posterior teeth are generally more occlusal on the ___ ridges than the ___ ridges
Mesial
Distal
True or false… all teeth have distal and mesial marginal ridges
True
Approximately __% of permanent root formation is completed at the time the tooth erupts
50
True or false… centric relation is a tooth guided position
False.. it is a ligament guided position
What is a function of accessory pulp canals
Allow the pulp tissue to communicate with the PDL space
What is the function of pulp?
Form and supply nutrients to dentin as well as transmit sensory info
True or false… the number of lobes that form the posterior teeth coincides with the number of cusps
True
True or false.. all premolars are wider mesiodistally than faciolingually
False, it is the opposite
