Do we need two different types of attachment or switch to a new attachment in the middle of procedure to achieve rotation and then mesialize/distalize the molar? Also, how do we sequence the movement first second and third and make sure to achieve each movement before moving on to the next step?
Thank you for the video Doc. What are the anchorage requirements to rotate the molar? Lock all other posterior teeth on that side until the rotation is finished?
Great question. Rotation of round teeth (cuspids and premolars) are even more challenging. First make sure there is no friction or collision with the other teeth. Determine if it’s only rotation or a combination of movements (any tipping or torquing involved as well?). What type of rotation is it? Pure vs hinge? Where do you need to apply the force? For example if the teeth would be in soft wax, where would you apply the force with your thumbs? That will be a good indication of where to put attachments. And it is known from scientific literature that asking for a 1 degree of rotation per aligner can greatly help in the predictability of the movement. If it’s only rotation, there is no need to lock the other teeth into position. We hope this will help you :) Have fun with your rotations ;)
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Do we need two different types of attachment or switch to a new attachment in the middle of procedure to achieve rotation and then mesialize/distalize the molar? Also, how do we sequence the movement first second and third and make sure to achieve each movement before moving on to the next step?
Stephane, thanks as always. Love these gems 💎 🦷
Thank you for the video Doc.
What are the anchorage requirements to rotate the molar? Lock all other posterior teeth on that side until the rotation is finished?
I wanted to ask the same thing since molar rotation is challenging with clear aligners especially when we deal with an angle near to 20-25°
Great question. Rotation of round teeth (cuspids and premolars) are even more challenging. First make sure there is no friction or collision with the other teeth. Determine if it’s only rotation or a combination of movements (any tipping or torquing involved as well?). What type of rotation is it? Pure vs hinge? Where do you need to apply the force? For example if the teeth would be in soft wax, where would you apply the force with your thumbs? That will be a good indication of where to put attachments. And it is known from scientific literature that asking for a 1 degree of rotation per aligner can greatly help in the predictability of the movement. If it’s only rotation, there is no need to lock the other teeth into position. We hope this will help you :) Have fun with your rotations ;)
@@theCLEARinstitute thanks for the detailed answer :)
I'm ok with IPR when it is conservative. I prefer to use metal strips over a bur. Burs seem aggressive and it's hard to keep things even.
Not against IPR but MAN...i hate doing it 😅!!
We totally understand. But sometimes a dentist's gotta do what a dentist's gotta do 😉 Thank you for watching and commenting!