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10135 Dental

What is torsional limit?

AAmount of apical pressure that can be applied to a file to the point of breakage
BThe beginning of plastic deformation of the instrument
CAmount of rotational torque that can be applied to a “locked” instrument to the point of breakage
DAmount of force necessary so that a file does not return to its original shape upon unloading of the force
Dental
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10141 Dental

A 6 year old female patient complains of pain due to a decayed lower right 2nd molar. She has a history of unpleasant dental extraction with the lower left second molar. On seeing the dentist, the child immediately cries and withdraws. Which theory of child psychology best explains the reaction of the patient?

AOperant conditioning by Skinner (1938)
BClassical conditioning by Pavlov (1972)
CClassical conditioning by Pavlov (1927)
DOperant conditioning by Skinner (1952)
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