Basic concepts in occlusion l orthodontics MCQs for dental students
MCQ on basic concepts of occlusion in orthodontics
1. Ideal occlusion can be defined as
A. Occlusion that deviates in one or more ways
B. Arrangement of teeth which will provide highest efficiency during the excursive movement of the mandible
C. Preconceived theoretical concept of occlusal structural and functional relationships that include idealized principles and characteristics than an occlusion should be
D. Occlusal relationship in which all posterior teeth on a side contact evenly as the jaw is moved towards that side.
2. Unilateral balanced occlusion can be termed as
A. Occlusion that deviates in one or more ways
B. Arrangement of teeth which will provide highest efficiency during the excursive movement of the mandible
C. Preconceived theoretical concept of occlusal structural and functional relationships that include idealized principles and characteristics than an occlusion should be
D. Occlusal relationship in which all posterior teeth on a side contact evenly as the jaw is moved towards that side.
3. Balanced occlusion can be termed as
A. Occlusion in which balanced and equal contacts are maintained throughout the entire arch during all excursions of mandible.
B. Arrangement of teeth which will provide highest efficiency during the excursive movement of the mandible
C. Preconceived theoretical concept of occlusal structural and functional relationships that include idealized principles and characteristics than an occlusion should be
D. Occlusal relationship in which all posterior teeth on a side contact evenly as the jaw is moved towards that side.
4. Centric occlusion can be termed as
A. Abnormal occlusal stress which is capable of producing or has produced an injury to the periodontium
B. Maximum intercuspation or contact attained between maxillary and mandibular posterior teeth
C. Most posterior position of the mandible relative to the maxilla at a given vertical dimension
D. Deflection of mandible forward and to the left in any contact of opposing teeth
5. Centric relation can be termed as
A. Abnormal occlusal stress which is capable of producing or has produced an injury to the periodontium
B. Maxillary intercuspation or contact attined between maxillary and mandibular posterior teeth
C. Most posterior position of the mandible relative to the maxilla at a given vertical dimension
D. Deflection of mandible forward and to the left in any contact of opposing teeth
6. Eruption of the permanent maxillary second before maxillary second premolar is a sequence that is;
A. Usual and desirable
B. Unusual and desirable
C. Usual and undesirable
D. Unusual and undesirable
7. Centric holding cusps are:
A. Facial cusps of both maxillary and mandibular Posterior teeth
B. lingual cusps of both maxillary and mandibular posterior
C Facial cusps of mandibular and palatal cusps of maxillary posterior teeth
D. Buccal cusps of maxillary and lingual cusps of mandibular posterior teeth
8. Andrew's six keys of occlusion include all Of the following except:
A. Molar inter-arch relationship
B. Mesio-distal crown angulation
C. Labio-lingual crown angulation
D. Presence of rotation
9. According to the Andrews six keys of occlusion if the gingival area of crown is more lingually placed than the occlusal area of crown, then this labio-lingual inclinalion of crown is referred
A. Positive crown inclination
B. Negative crown inclination
C Zero crown inclination
D. Full crown inclination
10. Which of the following statement is true
A. Rotated posterior teeth occupy more space in the dental arch wile rotated incisors occupy less space in the arch
B. Rotated anterior teeth occupy more space in the dental arch wile rotated posteriors occupy less space in the arch
C. Both A and B
D. None of the above
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