General Orthodontic Knowledge Quiz

 

1) Which of the following types of headgear produces a distal and upward force on the maxillary teeth and maxilla?
a) Straight-pull headgear.
b) Reverse-pull headgear.
c) Cervical-pull headgear.
d) High-pull headgear.
 

2) Which of the following determines the effect of a face-bow headgear on the molars to which it is attached?
a) The relation of the outer bow to the center of resistance of the tooth.
b) The direction of pull of the headgear strap.
c) The length and position of the outer bow in relation to the inner bow.
d) All of the above.
 

3) Which of the following is the most common removable retainer used in orthodontics?
a) Tooth positioner.
b) Hawleey retainer.
c) Functional retainer.
d) Anterior spring retainer.

 

4) A steep mandibular plane angle correlates wiht a:
a) Short anterior facial vertical dimensions and anterior open bite malocclusion.
b) Long anterior facial vertical dimensions and anterior open bite malocclusion.
c) Short anterior facial vertical dimensions and anterior deep bite malocclusion.
d) Long anterior facial vertical dimensions and anterior deep bite malocclusion.
 

5) Which of the following would be indicative of maxillary retrognathism?
a) An SNA angle of approximately 82 degree.
b) An SNA angle greater than 82 degree.
c) An SNA angle less than 82 degree.
d) SNA angle not used to diagnose this case.
 

6) Which type of malocclusion listed below is most often associated with mouth breathing?:
a) Dental open bite.
b) Skeletal open bite.
c) Dental croos bite.
d) skeletal cross bite.

 
7) The existence of a forward shift of the mandible during closure is found in:
a) True class III malocclusions.
b) Pseudo class III malocclusions.
c) All of the above.
d) Niether of the above.

 

8) Malocclusion is most often:
a) Acquired from a friend.
b) Hereditary.
c) Caused by antibiotics.
d) Caused by bad habits.
 

9) Which space maintainer is most often used when the primary first molar needs to be prematurely extracted?
a) Band and loop space maintainer.
b) Distal shoe space maintainer.
c) Lingual arch appliance.
d) Nance appliance.

 

10) A child with a pulpally involved primary tooth comes into your clinic. Which of the following ideally is the best space maintainer for this child?
a) Band and loop space maintainer.
b) Distal shoe space maintainer.
c) Lingual arch space maintainer.
d) The pulpally involved primary tooth itself.
free count
 
 

 

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