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Occlusion l Oral morphology MCQs for dental students
August 29, 2021
 Lateral incisors
b) Permanent canines
c) Permanent central incisors
d) Third molars
2. In occlusion, the teeth have
a) Cusp-to-cusp contact
b) Edge-to-edge contact
c) Marginal contact
d) Surface-to-surface contact
3. 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
4. Group function occlusion is common in:
a) 10-14 years
b) 15-25 years
c) Above 30 years
d) Edentulous patients
5. When a molar has no opposing tooth, it can become:
a) Extruded
b) Intruded
c) Protruded
d) Retruded
6. Over jet is defined as:
a) Horizontal overlap
b) Vertical overlap
c) Transverse plane discrepancy
d) All the above
7. 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) lncisal embrasure of canine and premolar
c) Distal ridge of tne cusp of mandibular canine
d) Mesial ridge on the facial cusp of mandibular first premolar
8. Normal dentition in centric occlusion, opposing contact may be expected at:
a) Buccal 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
9. In the intercuspal position, the lingual cusp of maxillary 2nd premolar contacts the :
a) Distal fossa of mandibular 2nd premolar
b) Mesial fossa of mandibular 1st molar
c) Distal marginal ridge of mandibular 2nd molar
d) Distal marginal ridge of mandibular 1st premolar
10. In ideal intercuspation, maxillary canine articulates with:
a) Mandibular canine and 1st pm
b) Mandibular canine and lateral incisor
c) Mandibular 1st premolar and 2
d) premolar
d) Mandibular canine only
11. In an ideal occlusion buccal cusps of maxillary teeth, occlude with:
a) Fossa and ridges
b) Grooves and embrasures
c) Lingual cusps of mandibular teeth
d) Occlusal pits and fissures of mandibular teeth
12. 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
13. 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
14. 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 incisal thirds
b) At the junction of middle and cervical thirds
c) At the linguo cervical ridges
d) Immediately incisal to cingulam
15. Distobuccal cusp of 27 falls into:
a) Embrasure of 37 & 38
b) Embrasure of 36 & 37
c) Mesial pit of 37
d) None of the above
16. Maximum contact between occlusal surfaces, of maxillary and mandibular teeth occur during
a) Centric occlusion
b) Rest position
c) Protrusive contacts
d) Laterotrusive contacts
17. Maxillary facial and mandibular lingual cusps require sufficient overlap for: occlusal length and horizontal
a) Esthetics
b) Centric stability
c) Chewing efficiency
d) Soft tissue protection
18. In occlusion the teeth have:
a) Cusp to cusp contact
b) Edge to edge contact
c) Marginal contact
d) Surface to surface contact
19. Desmodont is another name for:
a) The tooth with one wall pocket
b) Tooth with three walled pocket
c) Periodontal ligament
d) Dehiscence
20. 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) Catenary curve
21. Facial occlusal tine in the maxillary arch is formed by
a) Stamp cusps
b) Centric holding cusps
c) Supporting cusps
d) Non-supporting cusps
22. The position of maximum intercuspation of upper and lower teeth is referred to as centric
a) Occlusion
b) Relation
c) Position
d) Bite
23. At the age of nine years, the mandibular permanent first molar has its distal contact with which of the following teeth?
a) First premolar
b) Second premolar
c) Deciduous 2nd molar
d) None
24. Centric holding cusp is?
a) Mesiobuccal cusp of maxillary 1st molar
b) Mesiolingual cusp of mandibular first molar
c) Distolingual cusp of mandibular 1st molar
d) Mesiopalatal cusp of maxillary 1st molar.jpg){kind=spacer}
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