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Guidelines_English_Final
تحميل الدليل التدريبي

أسئلة شائعة


 

Name :
_______________________________________________________________________________
Computer No. :
_______________________________________________________________________________ 
Date :
__________________________________________________________________________________ 

 

1.        Posterior crossbites of deciduous dentition will be due to:

  a) thumb sucking habit
  b)   it will be corrected spontaneously on eruption of permanent dentition and habit is abandoned
  c)  interceptive treatment is mandatory in all cases
      a. 1 and 2 only
      b. 1 only
      c. 2 and 3 only
      d. 2 only
      e.  all of the above
      f. none of the above

2.        Lower second molars can be extracted to reduce impaction and permit eruption of third molars in good alignment.

  a) When the crown of the third molar is completely formed but root formation has not yet started
  b) When the third molar is mesio-angularly impacted but the angle with the long axis of the first molar is less than 30 degrees
  c) When the third molar occlusal surface makes 20° - 60° angle to the occlusal plane of the erupted molar and premolar.
      a. 1 and 2 only
      b. 1 only
      c. 2 only
      d.  all of the above
      e. none of the above

 

3.     Lower incisors equilibrium is important when permanent retention is recommended.

  a)   True 
  b)  False

4.      Prevention of overbite relapse can be achieved by reduction of interincisal angle,  while crossbite and anterior-poeterior correction can be maintained by better intercuspation.

  a)   True 
  b)  False

5.      Diastema is the least common local space that has tendency to recur after treatment.

  a)   True 
  b)  False

6.      Intercanine width reduction is seen post-treatment whether the case was expanded or not while intermolar width tends to return to its pre-treatment value. (1/2 mark)

  a)   True 
  b)  False

7.      Bands are better to be used than brackets due to increase surface coverage which protects the teeth as long as the cement lute is intact.

  a)   True 
  b)  False

8.       Chlorohexidine is an effective antiseptic mouthwash because: (1/2 mark)

  a)   it is the most popular mouthwash
  b)  it can stain teeth which make teeth more resistant to decalcification
  c)   it is absorbed by the pellicle which prolong its action in the mouth
  d) it can balance the pH of the oral flora

9.      One of the causes of mandibular crowding could be due to ceasation of upper arch growth

  a)   True 
  b)  False

10.       Third molar agenesis shows less anterior crowding,  because size of teeth associated with agenesis will be smaller.

  a) First statement is true, second is false.
  b)  First statement is false, second is true.
  c)   Both statements are true.
  d)  Both statements are false.

11.        Posterior crossbite will be:

  a)  higher with pacifier suckers than digit suckers
  b)  higher in girls than in boys
  c) developed due to palatal support for the upper primary canines and molars will be less compared to the pressure of cheeks
  d)  developed due to tongue position will be lower leading to a widening of lower arch
      a.  1, 2 and 3 only
      b.    1 and 2 only
      c.   2, 3 and 4only
      d. 1  and 4only
      e. 3  and 4 only
      f. all of the above
      g. none of the above

12.       When the time of pacifier sucking is reduced this will lead to spontaneous improvement of the crossbite.

  a)   True 
  b)  False

13.      Lateral incisor are rarely congenitally absent; but may have been absent as a result of trauma.

  a)  First statement is true, second is false
  b)  First statement is false, second is true.
  c)   Both statements are true.
  d)  Both statements are false.

14.     The most commonly absent teeth sequelae:  

  a)  third molar, upper lateral incisor, mandibular central
  b)  upper lateral incisor, lower second premolars, third molars and then lower central incisor
  c)    third molar, maxillary canine and lateral incisor
  d)   third molar, maxillary canine and lower second premolar

15.     Fixed prosthesis is more preferable than removable prosthesis because plaque retention is greater and give less patient compliance.

  a)   True 
  b)  False

16.      Etched retained bridges are preferred in adult patients because they require lesser tooth reduction, more esthetic appearance and maintain pulp vitality.

  a)   True 
  b)  False

17.    Transplantation should be done immediately after traumatic avulsion to avoid:

  a) more surgical preparation
  b)  bone loss
  c)  esthetic and speech problems
  d)   relieve crowding or to reduce an overjet or overbite

18.      Mention the three methods used for exposure and alignment of the palatally ectopic canines.

  a)  
  b)  
  c)  

19.      Mention the aims of orthognathic treatment.

  a)  
  b)  
  c)  
  d)  

20.   Explain why orthodontic treatment is not a risk for development of TMD.

  a)  
   
  b)

 

 
   

21.      Reduction of plaque retention by the appliance can be by

  a)  
  b)  
  c)  
  d)  

22.     What are the main factors that can cause malocclusion with patient having digit-sucking habit?

  a)  
  b)  
  c)  
  d)  
 

 

 

 

Key answer

 

1.        Posterior crossbites of deciduous dentition will be due to:

      d. 2 only

2.        Lower second molars can be extracted to reduce impaction and permit eruption of third molars in good alignment.

      e. none of the above

 

3.     Lower incisors equilibrium is important when permanent retention is recommended.

  b)  False

4.      Prevention of overbite relapse can be achieved by reduction of interincisal angle,  while crossbite and anterior-poeterior correction can be maintained by better intercuspation.

  a)   True 

5.      Diastema is the least common local space that has tendency to recur after treatment.

  b)  False

6.      Intercanine width reduction is seen post-treatment whether the case was expanded or not while intermolar width tends to return to its pre-treatment value. (1/2 mark)

  a)   True 

7.      Bands are better to be used than brackets due to increase surface coverage which protects the teeth as long as the cement lute is intact.

  a)   True 

8.       Chlorohexidine is an effective antiseptic mouthwash because: (1/2 mark)

  c)   it is absorbed by the pellicle which prolong its action in the mouth

9.      One of the causes of mandibular crowding could be due to ceasation of upper arch growth

  a)   True 

10.       Third molar agenesis shows less anterior crowding,  because size of teeth associated with agenesis will be smaller.

  c)   Both statements are true.

11.        Posterior crossbite will be:

      f. all of the above

12.       When the time of pacifier sucking is reduced this will lead to spontaneous improvement of the crossbite.

  a)   True 

13.      Lateral incisor are rarely congenitally absent; but may have been absent as a result of trauma.

  d)  Both statements are false.

14.     The most commonly absent teeth sequelae:  

  a)  third molar, upper lateral incisor, mandibular central
  b)  upper lateral incisor, lower second premolars, third molars and then lower central incisor

15.     Fixed prosthesis is more preferable than removable prosthesis because plaque retention is greater and give less patient compliance.

  b)  False

16.      Etched retained bridges are preferred in adult patients because they require lesser tooth reduction, more esthetic appearance and maintain pulp vitality.

  b)  False

17.    Transplantation should be done immediately after traumatic avulsion to avoid:

  a) more surgical preparation
  b)  bone loss
  c)  esthetic and speech problems
  d)   relieve crowding or to reduce an overjet or overbite

18.      Mention the three methods used for exposure and alignment of the palatally ectopic canines.

  a) open surgical exposure and spontaneous eruption 
  b) open surgical exposure and packing with subsequent bonding of an auxiliary
  c) Closed surgical exposure and bonding of attachment intra-operatively

19.      Mention the aims of orthognathic treatment.

  a) optimum facial aesthetics
  b) optimum dental aesthetics
  c) functional occlusion
  d)  future health of or ofacial structures
  e) a stable result
  f) minimum morbidity as a result of treatment

20.   Explain why orthodontic treatment is not a risk for development of TMD.

  a) multiplicity of factors that may be responsible for producing or
   exacerbating a TMD in general.
  b)

 

orthodontic mechano-therapy produces gradual change in an
  environment that is generally quite adaptive

21.      Reduction of plaque retention by the appliance can be by

  a)  selection of small brackets
  b) removal of any composite flask
  c)    minimal use of looped arch wires
  d) periodic checking of the cement lute under bands

22.     What are the main factors that can cause malocclusion with patient having digit-sucking habit?

  a) selection of small brackets
  b) removal of any composite flask
  c) minimal use of looped arch wires
  d)  periodic checking of the cement lute under bands
 

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