The last primary tooth to be replaced by a premanent tooth is usually the 1) Maxillary second molar 2) Mandibular second molar 3) Maxillary canine 4) Mandibular canine
OrthodonticsAnswer: 3
The amount of force required to effect the mandibular changes at condylar region is 1) 4-5 g per sq mm 2) 2-4 g per sq mm 3) 1-2 g per sq mm 4) 5-7 g per sq mm
OrthodonticsAnswer: 1
Eruption of teeth is delayed in all of the following except 1) Hypothyroidism and cleidocranial dysplasia 2) Acromegaly and hyperthyroidism 3) Rickets and cherubism 4) Cretinism and dentigerous cysts
OrthodonticsAnswer: 2
Maxilla develops by 1) Endochondral bone formation 2) Intramembranous bone formation 3) Both of the above 4) None of the above
OrthodonticsAnswer: 2
Enamel formation of primary teeth or crown formation of all primary teeth is completed by 1) 1.5 months 2) 5-6 months 3) 1-11 months 4) 15-16 months
OrthodonticsAnswer: 3
Identify the wrong statement about anterior bite plane 1) Given for correction of deep bite 2) Indicated in high FMA cases 3) Should clear posterior teeth by 2-3 mm 4) A labial-bow added to prevent proclination of upper anteriors
OrthodonticsAnswer: 2
The main criteria for serial extractions is 1) Spacing 2) Crowding 3) Jaw relation 4) Patient"s cooperation
OrthodonticsAnswer: 4
Cusp-cusp relation in molar relation is self-corrected to class-I relation by 1) Only maxillary molars drifting backwards 2) By forward molar drifting of lower arch only 3) Both upper and lower molars drifting forwards 4) It is not self-corrective
