MDS PREP
Surgery of the cleft lip should be carried out at
1) 20-30 weeks
2) 2-12 months
3) 3-6 months
4) 5 years
Orthodontics
Answer: 3
Relapse after orthodontic treatment can be totally prevented by
1) Inactive fixed appliance
2) Hawley"s retainer worn for 1 year
3) Wearing activator for 3 months
4) None of the above, some degree of relapse is normal
Orthodontics
Answer: 4
Which position is the most important in diagnosis of anterior or posterior crossbite?
1) Habitual position
2) Lateral shift
3) Maximum intercuspation
4) The point of first contact at centric relation
Orthodontics
Answer: 3
Bone grows by
1) Apposition
2) Interstitial growth
3) Osteoclastic activity
4) All of the above
Orthodontics
Answer: 1
Which of the following is a component of Jackson tried
1) Functional efficiency
2) Structural balance
3) Aesthetic harmony
4) All of the above
Orthodontics
Answer: 4
Bruxism bears which one of the following relationships to malocclusion
1) Malocclusion is only cause of bruxism
2) Malocclusion may be the cause of bruxism
3) Correction of occlusal discrepancy always eliminates bruxism
4) None of the above
Orthodontics
Answer: 2
The growth of the alveolar process has a major effect on
1) Anteroposterior jaw relationship
2) Vertical jaw relationship
3) Both
4) None of the above
Orthodontics Answer: 3