Mcq Subject: Dental

Which of the following headgear is preferred while treating a class II div. 1 malocclusion with a horizontal growth trend?

A. High pull head gear

B. Medium pull head gear

C. Cervical head gear

D. Reverse pull head gear

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The first radiographic sign of chronic pulpal infection of primary molars is:

A. Periapical bony changes

B. Root resorption

C. Changes in bony furcation area

D. Widening of apical periodontal ligament

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In Parkinsonism patient, teeth arrangement is

A. Anatomic

B. Non anatomic

C. Semi anatomic

D. Saucer teeth

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Incidence of 2 canals in mandibular incisors is

A. 3 - 12%

B. 12 - 20%

C. 20 - 41%

D. Less than 3%

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Guiding planes help in:

A. For better clasp prediction

B. Vertical to occlusal plane

C. Balanced occlusion

D. Avoid precision attachment

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Coefficient of thermal expansion of which of following is most similar to that of tooth?

A. Gold inlay

B. Acrylic resin

C. Silicate cement

D. Gold foil

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A child is brought to the clinic with complaint of irregular teeth. The maxillary central incisor is rotated in an otherwise normal occlusion. What should the next step be?

A. Check for supernumerary teeth

B. Resection of supracrestal fibers

C. Exert a couple on tooth

D. Fixed orthodontic appliances given

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Electrical conductivity speed of A α fibres ?

A. 70-120

B. 50-70

C. 30-51

D. 20-Oct

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Calcification of third molar begins at:

A. 8 months

B. 18 months

C. 8 years

D. 16 years

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Fibres of periodontal ligament embedded in the bone are

A. Sharpey's fibres

B. Tomes fibres

C. Elastic fibres

D. Ray's fibres

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