The ratio of skeletal: dental expansion obtained finally after rapid palatal expansion is 1) 4:1 2) 3:1 3) 2:1 4) 1:1
OrthodonticsAnswer: 4
Prolonged retention is usually needed in 1) Diastema 2) Mild crowding 3) Anterior crossbite 4) Deep bite
OrthodonticsAnswer: 1
A pseudo class III is differentiated from true class III by 1) Presence of premature contacts 2) Normal gonial angle 3) Deviated path of closure 4) All of the above
OrthodonticsAnswer: 4
Which of the following is a self-correcting anomly 1) Ugly duckling stage 2) Deep bite 3) Retrusion 4) Protrusion
OrthodonticsAnswer: 1
One of the basic sex differences in facial growth during puberty 1) Greater vertical development in male 2) Greater vertical development in female 3) Greater increase of anterior-posterior dimensions in males 4) None of the above
OrthodonticsAnswer: 1
The lower lip line in normal patients is at the level of 1) Incisal thirds of lower incisors 2) Incisal thirds of upper incisors 3) At the occlusal level of incisors 4) At the cervical third of lower incisors
OrthodonticsAnswer: 2
Anatomic crossbite can be differentiated from functional crossbite by 1) In anatomic crossbite there is marked occlusal wear 2) In anatomic crossbite there is smooth closure to centric occlusion, whereas in functional crossbite there is deviated closure 3) Both of the above 4) None of the above
OrthodonticsAnswer: 2
Which of the following is not a feature of simple tongue thrust swallowing 1) Contraction of facial muscle 2) Contraction of mandibular elevators 3) Teeth apart swallow 4) Anterior open bite
