Morph Final Anki 2/2 Flashcards
Which of the following premolars most typically have three rather than two cusps?
A. maxillary first premolar
B. maxillary second premolar
C. mandibular first premolar
D. mandibular second premolar
D. mandibular second premolar
After eruption, the maxillary first molar root development is completed by
A. 9-10 years old
B. 2-3 years old
C. 15 years old
D. 6-7 years old
A. 9-10 years old
The fifth or accessory cusp of the maxillary first molar is called
A. distal cusp
B. mesial-lingual cusp
C. the cusp of Carabelli
D. the cusp of Carvellini
C. the cusp of Carabelli
Which cusps of the maxillary molars become progressively smaller starting with the first molar?
A. distal lingual cusp
B. distobuccal cusp
C. mesiolingual cusp
D. mesiobuccal cusp
A. distal lingual cusp
The mesiolingual cusp of a maxillary first molar is separated from the distolingual cusp by
A. the distal developmental groove
B. the distolingual developmental groove
C. the central developmental groove
D. the lingual developmental groove
D. the lingual developmental groove
Which root of the maxillary first molar has two canals in a large percentage of patients?
A. lingual root
B. mesiobuccal root
D. distobuccal root
D. distal root
B. mesiobuccal root
The morphology of the mandibular lateral incisor when compared to the mandibular central incisor is
A. identical but larger
B. almost identical but smaller
C. almost identical but larger
D. the same
C. almost identical but larger
The facial surface of the maxillary canine is bounded by ___ borders.
A. 3
B. 4
C. 5
D. 6
C. 5
Which of the following teeth usually have two roots which may be fused?
A. maxillary first premolar
B. mandibular first premolar
C. maxillary second premolar
D. mandibular second premolar
A. maxillary first premolar
The permanent mandibular second molar differs from the permanent mandibular first molar in number of
A. cusps
B. roots
C. lingual grooves
D. marginal ridges
A. cusps
There are how many developmental lobes of a permanent mandibular molar?
A. 4: 2 buccal, 2 lingual
B. 5: 3 buccal, 2 lingual
C. 3: 2 buccal, 1 lingual
D. 5 in mandibular first molar, 4 in mandibular second molar
D. 5 in mandibular first molar, 4 in mandibular second molar
The premolar with the occlusal groove pattern that may simulate the letter “Y” is
A. maxillary first
B. mandibular first
C. maxillary second
D. mandibular second
D. mandibular second
The anterior tooth most likely to have a bifurcated root is the permanent
A. maxillary canine
B. mandibular canine
C. maxillary central incisor
D. mandibular central incisor
B. mandibular canine
The mandibular tooth that may have four root canals is
A. mandibular second premolar
B. mandibular first molar
C. mandibular second molar
D. mandibular third molar
B. mandibular first molar
The mandibular molar root which usually has one canal, but may have two, is
A. the mesial root of a mandibular first molar
B. the distal root of a mandibular first molar
C. the mesial root of a mandibular second molar
D. the distal root of a mandibular second molar
B. the distal root of a mandibular first molar
When in its proper position relative to the plane of occlusion, the crown of a mandibular second molar inclines
A. distally and facially
B. mesially and facially
C. mesially and lingually
D. distally and lingually
C. mesially and lingually
Which of the following is correct?
A. In all anterior teeth, the F embrasure space is larger than the L e.s.
B. In all anterior teeth, the F embrasure space is the same as the L e.s.
C. In all anterior teeth, the F embrasure space is smaller than the L e.s.
B. In all anterior teeth, the F embrasure space is the same as the L e.s.
Considering the nature and position of Mandibular incisor interproximal contacts, which of the following statements are true?
A. the gingival embrasure is larger than the incisal embrasure
B. the gingival embrasure is the same size as the incisal embrasure
C. the gingival embrasure is smaller than the incical embrasure
A. the gingival embrasure is larger than the incisal embrasure
Which of the following pre molars may* have a L developmental groove?
A. Maxillary 1st (has Mesial Marginal Ridge Dev. Groove)
B. Maxillary 2nd (has a short central Dev. Groove on occlusal surface)
C. Mandibular 1st (has Mesiolingual Dev. Groove)
D. Mandibular 2nd
*dependent on the number of
D. Mandibular 2nd
Which of the following statements is not correct?
A. The maxillary 1st Premolar has a ML developmental groove
B. Mandibular 1st Premolar has a ML developmental groove
C. Mandibular 2nd Premolar commonly has a lingual groove
D. The maxillary 2nd Premolar has a short central developmental groove
A. The maxillary 1st Premolar has a ML developmental groove
Which of the following is not correct?
A. Mandibular 1st Premolar most commonly has three pulp horns.
B. Maxillary 1st Premolar usually develops from 4 lobes
C. The Premolar most likely to have a central pit is the Mandibular 2nd.
D. Maxillary 1st Premolar has a pronounce mesial concavity extending from the crown onto the root
E. The premolar most likely to have 3 roots is the maxillary 1st
A. Mandibular 1st Premolar most commonly has three pulp horns.
When viewed from the Mesial, the geometric form of the crown of the maxillary 1st premolar is classically described as:
A. rectangle
B. rhomboid
C. trapezoid
D. square
E. ovoid
C. trapezoid
In which of the following cusps is the Mesial slope (AKA: mesial cusp arm/ mesial cusp ridge) longer than the Distal slope?
A. Buccal cusp of the permanent maxillary 1st Molar
B. Cusp of the permanent maxillary canine
C. Buccal cusp of the permanent maxillary 1st Premolar
C. Buccal cusp of the permanent maxillary 1st Premolar
Which statement is false? In comparing the manibular canine with the maxillary canine, the maxillary canine:
A. Has shorter crown.
B. More pronounced cingulum
C. Has a more pronounce developmental depression on the Mesial surface of the root
D. Has a cusp tip more nearly centered over the root when viewed from the Facial.
C. Has a more pronounce developmental depression on the Mesial surface of the root
Which of the following are correct?
A. A line angle is where three or more surfaces of a tooth meet
B. The geometric form of the permanent mandibular canine when viewed Facially is rhomboidal.
C. When viewed from the mesial, the geometric form of the permanent mandibular 1st premolar is best described as rhomboidal in nature.
C. When viewed from the mesial, the geometric form of the permanent mandibular 1st premolar is best described as rhomboidal in nature.
If a maxillary 1st molar has a fourth pulp canal, it is located in which of the following roots:
A. Mesiofacial (or MB)
B. Distofacial (or DB)
C. Palatal (or lingual)
A. Mesiofacial (or MB)
Which of the following represents the general crown form of the canine from the Facial?
A. Hexagon
B. Triangle
C. Rhomboidal
D. Trapezoidal
E. Diamond
D. Trapezoidal
On the crown of the maxillary canine, the height of contour is normally located in the cervical third of which of the following surfaces?
A. Labial
B. Lingual
C. Both labial and lingual
D. Neither labial nor lingual
C. Both labial and lingual
Which of the following surfaces of a tooth is always next to an adjacent tooth?
A. Distal
B. Facial
C. Palatal
D. Occlusal
E. Proximal
E. Proximal
Which of the following teeth exhibits the most deviation in crown?
A. maxillary central incisor
B. maxillary lateral incisor
C. mandibular lateral incisor
D. maxillary canine
E. mandibular canine
B. maxillary lateral incisor
Rank the roots of the maxillary 1st molar in order from largest to smallest.
A. MB > DB > Palatal
B. Palatal > MB > DB
C. DB > Palatal > MB
B. Palatal > MB > DB
Between which of the following teeth in the primary dentition is mandibular primate space usually found?
A. Between Centrals
B. Canine & 1st Molar
C. Between 1st and 2nd molars
D. Between lateral incisor and canine
B. Canine & 1st Molar
Which is most likely has bifurcated root?
A. Mandibular canine
B. Maxillary canine
C. Mandibular lateral incisors
A. Mandibular canine
On which of the following surfaces of secondary dentition do you see pit and fissure caries?
A. Facial of Maxillary 1st Molar
B. Lingual of maxillary 1st Molar
C. Facial of Mandibular 1st Premolar
D. Lingual of mandibular 1st premolar
E. Proximal surfaces of mandibular incisors
B. Lingual of maxillary 1 Molar
Which of the following characteristics is common to maxillary 1st and 2nd premolars?
A. The lingual cusp tip is offset to the mesial.
B. Facial and lingual cusps are equal in size and prominence
C. Mesial root concavity extends into cervical 1/3 of crown
A. The lingual cusp tip is offset to the mesial.
In a molar, where do root canals usually join the pulp chamber?
A. At the level of furcation
B. At varying levels, depending on age
C. With in middle 1/3 of crown
D. Within cervical 1/3 of the crown
E. Apical to the CEJ
E. Apical to the CEJ
Which primary molar has a transverse ridge, an oblique ridge, and distiolingual groove?
A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second
B. Maxillary second
Which tooth is represented by the drawing to the right:
A. Mesial view of the permanent mandibular 1st Molar
B. Mesial view of the permanent mandibular 2nd Molar
C. Mesial view of the permanent mandibular 1st Premolar
D. Distal view of the permanent mandibular 1st Molar
E. Distal view of the permanent mandibular 2nd Molar
D. Distal view of the permanent mandibular 1st Molar
In which premolar is the mesial marginal ridge at a lower level than the distal marginal ridge?
Mandibular 1st premolar
Because of the presence of a fissured groove, cavity preparation most frequently need to be extended from the occlusal surface to the:
A. Facial surface of maxillary molars
B. Lingual surface of maxillary molars
C. Lingual surface of the mandibular molars
D. Lingual surface of mandibular first premolars
B. Lingual surface of maxillary molars
When viewed from the mesial aspect, the position of the buccal tip of the mandibular first premolar is:
A. Centered over the midline of the tooth
B. Buccal to the midline of the tooth
C. Lingual to the midline of the tooth
D. Buccal to the buccal outline of the tooth
A. Centered over the midline of the tooth
Which of the following teeth has a root trunk that is 1/2 to 2/3s the length of the root?
A. Maxillary first premolar
B. Mandibular first premolar
C. Mandibular first molar
D. Maxillary first molar
E. Maxillary second premolar
A. Maxillary first premolar
Compared with its permanent successors, the primary maxillary central incisors are distinguished by:
A. more rounded incisal edges
B. more pronounced marginal ridges
C. a wider mesial/distal diameter than cervicoincisal length
C. a wider mesial/distal diameter than cervicoincisal length
Which of the following premolars most frequently has one pulp horn:
mandibular 1st premolar
Which furcation in the maxillary first molar is farthest from the CEJ?
farthest: distal
closest: mesial
Considering the nature and position of the mand incisors interproximal contacts, which statement is true?
A. Gingival embrasure is larger than incisal embrasure
B. Facial and lingual embrasures are the same on anterior teeth.
C. Both A and B
C. Both A and B
Which premolar has a lingual developmental groove?
Mandibular 2nd premolar (for the Y type cusps)
When viewed from the mesial the geometric form of the crown of the max 1st premolar is classically described as
1st + 2nd Max: Trapezoidal from proximal
1st + 2nd Mand: Rhomboidal
Compared to mand canines, the max canines
A. shorter crown height
B. more pronounced cingulum
C. cusp tip more centered than mandibular
D. All of the above
D. All of the above
If a max 1st molar has a 4th pulp canal it is located in the
mesiofacial root
On maxillary canine crown, height of contour is in the cervical 1/3 on which of the following surfaces:
A. labial
B. lingual
C. both
D. neither
C. both
Rank the roots of the maxillary 1st molar in order from largest to smallest
palatal > mesiobuccal > distobuccal
Which tooth is most likely to have a bifurcated root?
mandibular canine
Which tooth is least likely to have a bifurcated root?
maxillary canine
Compared with its permanent successors, the primary maxillary central incisors
A. more rounded incisal edges
B. more pronounced marginal ridges
C. a wider mesial/distal diameter that cervicoincisal length
C. a wider mesial/distal diameter that cervicoincisal length
In this case, both A and C were correct but C was “the most correct answer
Which premolar has a crescent shaped developmental groove?
mandibular 2nd
Which of the following are correct?
A. in all anterior teeth the facial embrasure is larger that the lingual embrasure
B. in all anterior teeth facial embrasure is the same size as the lingual embrasure
C. in all anterior teeth facial embrasure is smaller than the lingual embrasure
B. in all anterior teeth facial embrasure is the same size as the lingual embrasure
Which of the following premolars may have a lingual developmental groove?
A. max 1st
B. max 2nd
C. mand 1st
D. mand 2nd
D. mand 2nd
Which is not correct?
A. mand 1st premolar most commonly has 3 pulp horns
B. max 1st premolar develops from 4 lobes
C. the premolar most likely to have a central pit is the mand 2nd
D. max 1st premolar ahs a pronounced mesial concavity
E. premolar most likely to have 3 roots is the maxillary 1st
A. mand 1st premolar most commonly has 3 pulp horns
In which tooth is the mesial cusp arm longer than the distal?
maxillary 1st premolar and deciduous maxillary canine
Which is correct?
A. a line angle is where three or more surfaces meet
B. the geometric form of the perm mand canine when viewed from the facial is triangular
C. point angles are present on posterior teeth but not anterior
D. permanant mand 1st premolar is rhomboidal
D. permanant mand 1st premolar is rhomboidal
Which represents the general crown form of the canine as viewed from the Occlusal?
A. hexagon
B. triangular
C. rhomboidal
D. ovoid
E. diamond shaped
D. ovoid
Which exhibits the most diversity in crown morphology?
maxillary lateral incisor
Between which is the primate space?
A. central incisors
B. central and lateral incisors
C. lateral incisors and canine (maxillary)
D. canine and 1st molar (mandibular)
E. 1st and 2nd molar
C. lateral incisors and canine (maxillary)
D. canine and 1st molar (mandibular)
Which of the following surfaces of perminant teeth are pit and fissure carries most likely to occur?
A. F of max 1st molar
B. L of max 1st molar
C. F of mand 1st premolar
D. L of mand 1st premolar
E. Proximal of mand I
B. L of max 1st molar – because of the lingual groove, at its bottom
Also – buccal of mandibular molars – buccal grooves are susceptible to pit ‘n fissure caries
Which premolar has only 1 pulp horn?
mandibular 1st
How many lobes does the max 2nd molar develop from?
5
Which premolar is MMR lower than DMR?
A. mand 1st
B. mand 2nd
C. max 1st
D. max 2nd
A. mand 1st
Which arch are the 2nd premolars larger than the 1st?
A. maxillary
B. mandibular
B. mandibular
Which tooth has a lower mesial marginal ridge?
Mandibular 1st premolar
True or False: Root depressions are larger on distal than mesial generally.
True
In general, which teeth are the most commonly congenitally missing?
3rd molars
Which are the most commonly congenitally missing ANTERIOR teeth?
maxillary lateral incisors
What are the most likely anterior teeth to have 2 pulp canals?
mandibular canine
What are the least ikely anterior teeth to have 2 pulp canals?
maxillary canine
What is the largest cusp of the maxillary 1st molar?
ML (with its cusp of Carabelli)
What is the largest cusp of the mandibular 1st molar?
MB
In a longitudinal section on a premolar tooth, the enamel is thickest in the
A. cervical third
B. middle third
C. occlusal third
D. junction of the middle and occlusal third
C. occlusal third
The mesiodistal (M-D) measurement of the crown is greater than the faciolingual (F-L) measurement on which of the following teeth
A. Maxillary molars
B. Maxillary premolars
C. Mandibular incisors
D. Mandibular molars
D. Mandibular molars
From a facial view, the mesial and distal contact area of the mandibular central Incisors are located in
A. both are located in the incisal 1/3
B. both are located in the middle 1/3
C. the incisal 1/3 on the mesial and the middle 1/3 on the distal
D. the incisal 1/3 on the mesial and junction of the incisal and middle 1/3’s on the distal
A. both are located in the incisal 1/3
Identify the anterior tooth that most frequently exhibits a bifurcated root and Identify the two roots
A. maxillary canine-mesial and distal
B. maxillary canine-facial and lingual
C. mandibular central incisor-facial and lingual
D. mandibular canine-mesial and distal
E. mandibular canine-facial and lingual
E. mandibular canine-facial and lingual
Which furcation of the maxillary first molar is closest to the cervical line?
A. Mesial
B. Distal
C. Facial
A. Mesial
Which of the following muscles is not an elevator of the mandible?
A. Medial pterygoid
B. Masseter
C. Lateral pterygoid
D. Temporalis
C. Lateral pterygoid
Which of the following muscles is not an elevator of the mandible?
A. Medial pterygoid
B. Masseter
C. Lateral pterygoid
D. Temporalis
C. Lateral pterygoid
Which of the following cusps is not a member of the primary molar triangle or trigon found in maxillary molars?
A. Mesiofacial
B. Distofacial
C. Mesiolingual
D. Distolingual
D. Distolingual
Which of the following statements is correct in relation to the maxillary incisors?
A. the lingual embrasure is larger than the facial embrasure
B. the facial embrasure is larger than the lingual embrasure
C. the incisal embrasure is larger than the cervical embrasure
D. the lingual and facial embrasures are equal in size
D. the lingual and facial embrasures are equal in size
In cervical cross section, the root of the maxillary central incisor is described as
A. triangular
B. conical
C. ovoid
D. rhomboidal
E. broader mesiodistally on the lingual than on the facial
A. triangular
Which of the following is the normal eruption age (years) of the permanent maxillary lateral incisors
A. 8-9 years
B. 7-8 years
C. 11-13 years
D. 11 months
A. 8-9 years
When viewed from the facial, the mesial contact (height of contour) of a permanent Maxillary canine is located in (at)
A. the incisal 1/3
B. the junction of the middle and incisal thirds
C. the middle third
D. the junction of the middle and cervical thirds
B. the junction of the middle and incisal thirds
In which of the following is the mesial cusp arm longer than the distal cusp arm?
A. Permanent maxillary canine
B. Permanent mandibular canine
C. Facial cusp of the permanent maxillary second premolar
D. Facial cusp of the permanent maxillary first premolar
E. Facial cusp of the permanent mandibular first premolar
D. Facial cusp of the permanent maxillary first premolar
The cusp of a canine develops from the
A. Middle labial lobe
B. Mesial-labial lobe
C. Distal-labial lobe
D. Lingual lobe
A. Middle labial lobe
In a tooth that is partially erupted, the clinical crown height is ____________ than the anatomical crown height.
A. Longer
B. Shorter
C. Equal to
B. Shorter
The first sign of tooth development is seen in the embryo at
A. 6-7 days
B. 6-7 weeks
C. 6-7 months
D. 13-16 weeks
B. 6-7 weeks
First evidence of calcification of the permanent mandibular second molar occurs at
A. 3-4 months
B. 10-12 months
C. 1 1/2-2 1/2 years
D. 2 1/2-3 years
E. Birth
D. 2 1/2-3 years
The presence of interproximal contacts is important
A. To prevent food impaction
B. To avoid mesial drift
C. Dissipate forces throughout the arch (good stress distribution)
D. All of the above
D. All of the above
Which CEJ is the most curved in the permanent dentition?
A. Mesial of mandibular central incisor
B. Distal of mandibular central incisor
C. Mesial of maxillary central incisor
D. Distal of maxillary central incisor
E. Facial of maxillary central incisor
C. Mesial of maxillary central incisor
The primary maxillary first molar is exfoliated at approximately
A. 10-11 years
B. 14 years
C. 6-7 years
D. 1 1/2-2 1/2 years
A. 10-11 years
Which deciduous tooth when viewed from the facial has a mesial crown height that is twice the distal crown height?
A. Deciduous mandibular first molar
B. Deciduous mandibular second molar
C. Deciduous maxillary second molar
D. Deciduous maxillary second molar
E. Deciduous maxillary canine
A. Deciduous mandibular first molar
The mesiodistal diameter of the crowns of all permanent teeth is narrower on the Lingual aspect than on the facial aspect of the crown, except for one tooth. That Tooth is
A. Maxillary first premolar
B. Mandibular second premolar
C. Permanent maxillary first molar
D. Mandibular first premolar
E. Permanent mandibular first molar
C. Permanent maxillary first molar
The predominant sequence of eruption of deciduous teeth is
A. Central incisor, lateral incisor, canine, first molar, second molar
B. Central incisor, lateral incisor, canine, second molar, first molar
C. First molar, central incisor, lateral incisor, canine, second molar
D. First molar, central incisor, lateral incisor, second molar, canine
E. Central incisor, lateral incisor, first molar, canine, second molar
E. Central incisor, lateral incisor, first molar, canine, second molar
Which premolar has a mesial marginal ridge at a lower level than the distal marginal ridge?
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar
C. Mandibular first premolar
The oblique ridge of the maxillary first molar is formed by union of
A. The triangular ridge of the distobuccal cusp and distal cusp ridge of the
mesiolingual cusp
B. The triangular ridge of the distobuccal cusp and the triangular ridge of mesiolingual cusp
C. The mesial cusp ridge of the distobuccal cusp and the triangular ridge the mesiolingual cusp
D. The distal cusp arm of the mesiobuccal cusp and the triangular ridge of the distolingual cusp
A. The triangular ridge of the distobuccal cusp and distal cusp ridge of the
mesiolingual cusp
In the sequence of eruption of the deciduous dentition which of the following is correct?
A. Maxillary central incisor erupts before mandibular central incisor
B. Mandibular lateral incisor erupts before maxillary lateral incisor
C. Maxillary first molar erupts before mandibular first molar
D. Mandibular canine erupts before maxillary canine
C. Maxillary first molar erupts before mandibular first molar
Which premolar has an uninterrupted transverse ridge?
A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second
C. Mandibular first
Which of the following teeth has a root trunk that is 1⁄2 to 2/3 it’s root length?
A. Permanent mandibular first molar
B. Permanent maxillary first molar
C. Maxillary first premolar
D. Mandibular first premolar
C. Maxillary first premolar
At the time of eruption of a permanent tooth, the root of the tooth is
A. 1/3 developed
B. 1/2 developed
C. 2/3 developed
D. Undeveloped
B. 1/2 developed