Which of the following mechanical separators can be placed just few hours before banding 1) Spring 2) Elastic 3) Dumbell 4) Brass wire
OrthodonticsAnswer: 2
Which of the following is least effective in determining site of bone deposition in experimental methods of growth study 1) Implants 2) Alizarin stains 3) Tetracycline stains 4) Radiographs
OrthodonticsAnswer: 4
Incompetent lips refers to 1) Inability of the lips to cover the upper incisors in the mandibular relaxed position 2) Tongue thrusts against the lips during swallowing 3) Both of the above 4) None of the above
OrthodonticsAnswer: 1
Blanch test is used in diagnosis of 1) Abnormal frenal attachments 2) Pseudo class III 3) Tongue thrusting 4) Thumb sucking
OrthodonticsAnswer: 1
If an anterior tooth is tipped lingually, all of the following are true except 1) Osteoblasts occur at lingual crest of alveolar bone 2) Osteoclasts occur at lingual crest of alveolar bone 3) Osteoblasts occur at facial crest of alveolar bone 4) None of the above
OrthodonticsAnswer: 1
Calcification of first permanent molars starts at 1. 1.5 weels IU life 2. At birth 3. 6 months after birth 4. 2.5 years after birth
OrthodonticsAnswer: 2
To regain arch length in anterior segment by moving incisors labially 1) Cephalometric analysis have to be made before taking up treatment 2) Use tongue blade therapy 20 times/day 3) Use a "Z" spring with Hawley"s retainer 4) Use an anterior bite plane
OrthodonticsAnswer: 1
Overbite must be reduced during the first stage of class II/I treatment to 1) Prevent traumatic overbite 2) Disengage buccal cusps 3) Allow lower space to close 4) Permit full overjet reduction
