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The wagon wheel effect, described in Andrews six keys of occlusion as a phenomenon of mesial root tip during torque expression of anterior teeth, does not happen with tooth movement via aligners.
The correct answer is “False”. Please adjust your answer accordingly before proceeding to the next question.
For adult orthodontic treatment, the Invisalign software system takes into account attachment design for expansion of the posterior segment to prevent crowns from tipping.
The correct answer is “False”. Please adjust your answer accordingly before proceeding to the next question.
Optimized root control attachments generally have sufficient gingival push surface areas needed for extrusion.
The correct answer is “False”. Please adjust your answer accordingly before proceeding to the next question.
One of the best ways to control root tip when an attachment for root tip is not triggered is to open interproximal space around the tooth for a full wrap of plastic during the movement.
The correct answer is “True”. Please adjust your answer accordingly before proceeding to the next question.
The Invisalign software currently has optimized attachments to help control significant root tip.
The correct answer is “False”. Please adjust your answer accordingly before proceeding to the next question.
Considerations when it comes to pushing vectors of force on a tooth include:
The correct answer is “4”. Please adjust your answer accordingly before proceeding to the next question.
It’s ok and well tolerated for interproximal binding to occur when resolving crowding?
The correct answer is “False”. Please adjust your answer accordingly before proceeding to the next question.
The threshold amount of second order movement of the apex to be considered as a guideline when designing attachments is:
The correct answer is “2”. Please adjust your answer accordingly before proceeding to the next question.
For mesial molar movement greater than 2mm, creating a center of rotation within the clinical crown is best accomplished with what type of attachment?
The correct answer is “3”. Please adjust your answer accordingly before proceeding to the next question.
When developing the transverse arch form, it is useful to apply several degrees of labial root torque to the teeth moving to prevent plunging palatal cusps.
The correct answer is “True”. Please adjust your answer accordingly before proceeding to the next question.
The Extrusion of anterior teeth is best accomplished by:
The correct answer is “4”. Please adjust your answer accordingly before proceeding to the next question.
For controlling torque during anterior space closure, it is best to have attachments on both labial and lingual surfaces.
The correct answer is “False”. Please adjust your answer accordingly before proceeding to the next question.
Tipping, being an easy movement, has no clinical side effects and thus does not need to be accounted for (ie, no overtreatments are needed in the software).
The correct answer is “False”. Please adjust your answer accordingly before proceeding to the next question.