Age of closure of spheno-occipital synchondrosis 1) 6 years 2) 12 years 3) 18 years 4) 25 years
OrthodonticsAnswer: 3
Edgewise brackets are used with rectangular arch wire; while in Begg, brackets are used with round arch wire 1) Both statements are correct 2) Both statements are wrong 3) Only first statement is correct 4) Only second statement is correct
OrthodonticsAnswer: 1
Extraction of all permanent first molars is called 1) Balancing extractions 2) Serial extractions 3) Wilkinson"s extractions 4) Compensated extractions
OrthodonticsAnswer: 3
There is more adolescent growth spurt in mandible than maxilla. Mandible follows growth curve of somatic tissues closely than maxilla 1. Both statements are wrong 2. Both statements are correct 3. Only first statement is correct 4. Only second statement is correct
OrthodonticsAnswer: 2
The first orthodontic appliance devised by Angle was 1) Edgewise 2) Pin and tube appliance 3) E-arch 4) Ribbon arch
OrthodonticsAnswer: 3
Which of the following conditions cannot be assessed by a lateral cephalogram 1) Mandibular lateral asymmetry 2) Vertical facial discrepancy 3) Increased posterior height 4) Decreased anterior height
OrthodonticsAnswer: 1
The term space maintenance referts to 1) The preservation of the space for a permanent tooth in a child"s mouth 2) The preservation of total arch length or of all the permanent teeth in the arch in a child"s mouth 3) To prevention of mesial drift after the loss of a tooth 4) None of the above
OrthodonticsAnswer: 2
A mandibular lingual holding arch with loops mesial to each molar band is used in children for 1) Correction 2) Regaining space 3) Space maintenance only 4) Correction of distally tilted molars
