Oral Anatomy Mcqs - Set 8

1)   The two major fossa of permanent maxillary first molar________________?

a. Central fossa and mesial fossa
b. Central and distal fossa
c. Mesial and distal tringular fossa
d. Distal fossa and distal tringaular fossa
Answer  Explanation 

ANSWER: Central and distal fossa

Explanation:
No explanation is available for this question!


2)   In which of the following a nonfunctional cusp is present________________?

a. Maxillary 1st molar
b. Maxillary 2ndmolar
c. Mandibular 1st molar
d. Mandibular 2nd molar
Answer  Explanation 

ANSWER: Maxillary 1st molar

Explanation:
No explanation is available for this question!


3)   The premolar with the occlusal groove pattern that may simulate the letter “Y” is________________?

a. Maxillary first
b. Maxillary second
c. Mandibular second
d. Mandibular first
Answer  Explanation 

ANSWER: Mandibular second

Explanation:
No explanation is available for this question!


4)   In the triangle formed by the projection of the orifices of the canals of a maxillary molar, the_________________?

a. Line connecting mesial with distal is longest
b. Line connecting mesial with lingual is longest
c. Line connecting distal with lingual is longest
d. Angle at the mesio facial canal is obtuse
Answer  Explanation 

ANSWER: Line connecting mesial with lingual is longest

Explanation:
No explanation is available for this question!


5)   Which bifurcation is closet to the cervical line (or) which surface has short root trunk length in a maxillary permanent first molar ?

a. Buccal
b. Mesial
c. Distal
d. None of the above
Answer  Explanation 

ANSWER: Mesial

Explanation:
No explanation is available for this question!


6)   Which cusp is poorly developed in a permanent maxillary second molar_____________?

a. DB
b. DL
c. MB
d. ML
Answer  Explanation 

ANSWER: DL

Explanation:
No explanation is available for this question!


7)   Tritubercular cusps are_______________?

a. ML
b. MB
c. DB
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!


8)   The occlusal surface shape of a 3 cusped mandibular second premolar_________________?

a. Oval
b. Elliptical
c. Square
d. Tetrahedral
Answer  Explanation 

ANSWER: Square

Explanation:
No explanation is available for this question!


9)   Mesial slope of buccal cusp is longer than distal slope in_________________?

a. Maxillary 2nd premolar
b. Maxillary 1st premolar
c. Mandibular canine
d. Maxillary canine
Answer  Explanation 

ANSWER: Maxillary 1st premolar

Explanation:
No explanation is available for this question!


10)   Mandibular second premolar 3- cusp type id developed from_______________?

a. 3
b. 4
c. 5
d. 6
Answer  Explanation 

ANSWER: 5

Explanation:
No explanation is available for this question!


11)   Rounded protuberances on the incisal edges of newly erupted permanent incisors are____________?

a. Mamelons
b. Tubercles
c. Enamel pits
d. Cingulum
Answer  Explanation 

ANSWER: Mamelons

Explanation:
No explanation is available for this question!


12)   No. of cusps in mandibular 1st molar_____________?

a. 4
b. 3
c. 5
d. 6
Answer  Explanation 

ANSWER: 5

Explanation:
No explanation is available for this question!


13)   Longest tooth of the maxillary arch is_____________?

a. Permanent incisor
b. First premolar
c. Permanent canine
d. Decidous incisor
Answer  Explanation 

ANSWER: Permanent canine

Explanation:
No explanation is available for this question!


14)   The largest permanent tooth in the mouth usually is_____________?

a. Maxillary canine
b. Mandibular canine
c. Mandibular first molar
d. Maxillary first molar
Answer  Explanation 

ANSWER: Maxillary first molar

Explanation:
No explanation is available for this question!


15)   Difference between mandibular and maxillary premolars is that in the mandibular premolars ?

a. The buccal and lingual cusps are more prominent
b. The lingual cusp is sharper and longer
c. The lingual surface rounded and less developed
d. The buccal surface is rounded and less developed
Answer  Explanation 

ANSWER: The lingual surface rounded and less developed

Explanation:
No explanation is available for this question!


16)   Mesiolingual grooves may be found on which of the following permanent teeth ______________?

a. Mandibular second molars
b. Mandibular first premolars
c. Maxillary first molars
d. Maxillary canines
Answer  Explanation 

ANSWER: Mandibular first premolars

Explanation:
No explanation is available for this question!


17)   Which of the following features of a permanent maxillary lateral incisor aids in distinguishing it from a mandibular lateral incisor ?

a. Flattened root
b. More pronounced lingual fossa
c. Thinner incisal ridge
d. Sharper proximal incisal angles
Answer  Explanation 

ANSWER: More pronounced lingual fossa

Explanation:
No explanation is available for this question!


18)   The total number of cingula in each dentition is_______________?

a. 6
b. 12
c. 24
d. 32
Answer  Explanation 

ANSWER: 12

Explanation:
No explanation is available for this question!


19)   A maxillary right canine may be distinguished from a maxillary left canine because ____________?

a. The root curves to mesial in the apical 1/3rd
b. The distal half of canine shows more convexity than the mesical half
c. Facially the cusp tip is placed distal to Bisecting line
d. Lingually the cervical line slopes mesially
Answer  Explanation 

ANSWER: The distal half of canine shows more convexity than the mesical half

Explanation:
No explanation is available for this question!


20)   Number of roots in maxillary 2nd molar is_______________?

a. 2
b. 3
c. 4
d. 5
Answer  Explanation 

ANSWER: 3

Explanation:
No explanation is available for this question!