<prompt> Wagon wheel effect is due to:Less tip more torqueLess torque more tipMore tip and torqueTipping and retraction of anterior teeth  <response>: When buccal crown torque is incorporated in the wire, the roots of anterior teeth tend to converge towards centre like spokes of wheel. It has been often called wagon wheel effect. Following final space closure required torque is attained by incorporation of active root torque in the anterior segment. Due to wagon wheel effect, incorporation of palatal rootbuccal crown torque during retraction causes loss of tip. Orthodontics: Diagnosis and Management of Malocclusion and Dentofacial DeformitiesTHIRD EDITION Om P. Kharbanda 