Oral Anatomy Mcqs - Set 5

1)   The last primary tooth to be replaced by a permanent tooth is usually the_____________?

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

ANSWER: Maxillary canine

Explanation:
No explanation is available for this question!


2)   Desmodont is another name for_____________?

a. The tooth with one wall pocket
b. Tooth with three walled pocket
c. periodontal ligament
d. Dehiscence
Answer  Explanation 

ANSWER: periodontal ligament

Explanation:
No explanation is available for this question!


3)   Maxillary facial and mandibular lingual cusps require sufficient occclusal length and horizontal overlap for_____________?

a. Esthetics
b. Centric stability
c. Chewing efficiency
d. Soft tissue protection
Answer  Explanation 

ANSWER: Soft tissue protection

Explanation:
No explanation is available for this question!


4)   Distobuccal cusp of 27 falls into ______________?

a. Embrasure of 37 & 38
b. Embrasure of 36 & 37
c. Mesial pit of 37
d. Immediately incisal to cingulam
Answer  Explanation 

ANSWER: Embrasure of 37 & 38

Explanation:
No explanation is available for this question!


5)   If a permanent first molar is lost, the permanent second molar drifts to the______________?

a. Buccal side
b. Distal side
c. Mesial side
d. Lingual side
Answer  Explanation 

ANSWER: Mesial side

Explanation:
No explanation is available for this question!


6)   In an ideal occlustion buccal cusps of maxillary teeth, occlude with______________?

a. Fossa and rdges
b. Grooves and embrasures
c. Lingual cusps of mandibular teeth
d. Occlusal pits and fissures of mandibular teeth
Answer  Explanation 

ANSWER: Grooves and embrasures

Explanation:
No explanation is available for this question!


7)   Normal dentition in centric occlusion, opposing contact may be expected at_____________?

a. Buccals slopes of buccal cusps of maxillary posterior teeth
b. Buccal slopes of lingual cusps of maxillary posterior teeth
c. Lingual slopes of lingual cusps of mandibular posterior teeth
d. All slopes of lingual cusps of mandibular posterior teeth
Answer  Explanation 

ANSWER: Buccal slopes of lingual cusps of maxillary posterior teeth

Explanation:
No explanation is available for this question!


8)   Over jet is defined as______________?

a. Horizontal overlap
b. Vertical overlap
c. Transverse plane discrepancy
d. Transverse plane discrepancy
Answer  Explanation 

ANSWER: Horizontal overlap

Explanation:
No explanation is available for this question!


9)   Group function occlusion is common in_____________?

a. 10 – 14 years
b. 15 -25 years
c. Above 30 years
d. Edentulous patients
Answer  Explanation 

ANSWER: Above 30 years

Explanation:
No explanation is available for this question!


10)   IN occlusion, the teeth have______________?

a. Cusp – to – cusp contact
b. Edge- to – edge contact
c. Marginal contact
d. Surface – to- surface contact
Answer  Explanation 

ANSWER: Surface – to- surface contact

Explanation:
No explanation is available for this question!


11)   Facial occlusal line in the maxillary arch is formed by_______________?

a. Stamp cusps
b. Centric holding cusps
c. Supporting cusps
d. Non- supporting cusps
Answer  Explanation 

ANSWER: Non- supporting cusps

Explanation:
No explanation is available for this question!


12)   Curve passing through the buccal and lingual cusp tips of the mandibular buccal teeth is______________?

a. Wilson curve
b. Mansoon curve
c. Curve of spee
d. Caternary curve
Answer  Explanation 

ANSWER: Wilson curve

Explanation:
No explanation is available for this question!


13)   In occlusion the teeth have_______________?

a. Cusp to cusp contact
b. Edge to edge contact
c. Marginal contact
d. Surface to surface contact
Answer  Explanation 

ANSWER: Surface to surface contact

Explanation:
No explanation is available for this question!


14)   Maximum contact between occlusal surfaces, of maxillary and mandibular teeth occur during________________?

a. Centric occlusion
b. Rest position
c. Protrusive contacts
d. Laterotrusive contacts
Answer  Explanation 

ANSWER: Centric occlusion

Explanation:
No explanation is available for this question!


15)   The incisal edges and the incisal thirds of facial surfaces of mandibular incisors and canines generally oppose lingual surfaces of maxillary incisor and canines _____________?

a. Within the incisor thirds
b. At the junction of middle and cervical thirds
c. At the linguo cervical ridges
d. Immediately incisal to cingulam
Answer  Explanation 

ANSWER: Within the incisor thirds

Explanation:
No explanation is available for this question!


16)   The key to occlusion is_______________?

a. Maxillary permanent first molar
b. Maxillary permanent second molar
c. Maxillary primary first molar
d. Maxillary primary second molar
Answer  Explanation 

ANSWER: Maxillary permanent first molar

Explanation:
No explanation is available for this question!


17)   In the intercuspal position, the lingual cusp of maxillary 2nd premolar contacts the______________?

a. Distal fossa of mandibular 2ndpremolar
b. Mesial fossa of mandibular 1st molar
c. Distal marginal ridge of mandibular 2ndmolar
d. Distal marginal ridge of mandibular 1st premolar
Answer  Explanation 

ANSWER: Distal fossa of mandibular 2ndpremolar

Explanation:
No explanation is available for this question!


18)   In centric occlusion, the cusp tip of the maxillary canine is in alignment with which mandibular tooth_____________?

a. Facial embrasure of canine and premolar
b. incisal embrasure of canine and premolar
c. Distal ridge of the cusp of mandibular canine
d. Mesial ridge on the facial cusp of mandibular first premolar
Answer  Explanation 

ANSWER: Facial embrasure of canine and premolar

Explanation:
No explanation is available for this question!


19)   When a molar has no opposing tooth, it can become_______________?

a. Extruded
b. Intruded
c. Protruded
d. Retruded
Answer  Explanation 

ANSWER: Extruded

Explanation:
No explanation is available for this question!


20)   In normal occlusion , with which grooves / surface of the permanent mandibular first molar does the mesiobuccal cusp of the permanent maxillary first molar occlude______________?

a. Distobuccal groove
b. Mesial surface
c. Mesiobuccal surface
d. Transverse groove
Answer  Explanation 

ANSWER: Mesiobuccal surface

Explanation:
No explanation is available for this question!