Premature exfoliation of primary canines indicates 1) Arch length deficiency 2) Skeletal malocclusion 3) Arch length excess 4) None of the above
OrthodonticsAnswer: 1
A child at 7.5 years of age receives extended course of tetracyline. Clinical crowns of which following teeth are likely to show discolouration 1) All permanent teeth will be discoloured 2) No teeth will be discoloured to an aesthetically objecionable degree 3) Only incisors and first molars affected 4) Only premolars and affected
OrthodonticsAnswer: 2
Mandibular plane angle is formed by 1) FH line and NG-pogline 2) FH line and mandibular plane 3) FH line and SNA 4) FH line and SNB
OrthodonticsAnswer: 2
Imbrication or lower incisor crowding mainly is the result of 1) Arch length to size discrepancy 2) Premature loss of primary teeth 3) Presence of supernumerary teeth 4) Mesial migration teeth
OrthodonticsAnswer: 1
Functional appliances in skeletal class II are indicated when 1) Maxilla is prognathic and mandible is retrognathic 2) Maxilla is prognathic 3) Mandible is retrognathic in a mature individual 4) When severe crowding is present
OrthodonticsAnswer: 3
At birth, the following structure is nearest the size it will attain in adulthood 1) Mandible 2) Cranial vault 3) Cranial base 4) Middle face
OrthodonticsAnswer: 2
Resorption of cementum as compared to bone when orthodontic forces applied 1) More intense 2) Less intense 3) Same intense 4) Variable
OrthodonticsAnswer: 2
The most documented evidence of supernumerary teeth 1) Atavistic feature 2) Hereditary and familial 3) Metabolic disturbance 4) Nutritional disturbance
