What is a 1st-Order Rotation Bend Exactly?

[kellogg9]

Hi!

Question: I have braces but my upper-left canine (tooth #2.3) is a slight mesial rotation towards the palate. I have been trying to tell my ortho the problem but he doesn't seem to understand what i mean entirely. He's tried to do a detail bend to correct it but i feel after 3 attempts the bend is not working and my canine is still incorrectly positioned. So i would like to better describe the problem to him. So to be clear:

My tooth #2.3 is mesially rotated towards my palate. Which means that its distal surface is a tad rotated facially (labially). So my thinking is it needs a 1st-order rotation bend? Is that the correct terminology for it? I say this because 1st order bends are all about step-ins and step-outs and so i am looking to step-out the mesial surface, but at the same time step-in its distal surface. By doing so at the same tine would result in a rotation around its long axis. The bend i am thinking would look like this:

Is that correct? If you can give me the problem wording i would say to my ortho that would be great. Thanks very much!

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[Tooth]

Hi!

Question: I have braces but my upper-left canine (tooth #2.3) is a slight mesial rotation towards the palate. I have been trying to tell my ortho the problem but he doesn't seem to understand what i mean entirely. He's tried to do a detail bend to correct it but i feel after 3 attempts the bend is not working and my canine is still incorrectly positioned. So i would like to better describe the problem to him. So to be clear:

My tooth #2.3 is mesially rotated towards my palate. Which means that its distal surface is a tad rotated facially (labially). So my thinking is it needs a 1st-order rotation bend? Is that the correct terminology for it? I say this because 1st order bends are all about step-ins and step-outs and so i am looking to step-out the mesial surface, but at the same time step-in its distal surface. By doing so at the same tine would result in a rotation around its long axis. The bend i am thinking would look like this:

Is that correct? If you can give me the problem wording i would say to my ortho that would be great. Thanks very much!

I would like to know if first, second and third order "rotations" are the result of their respective first, second, and third order bends. Do first order rotations result from first order bends, second from second and third from third?

 

[Jyaki]

Just ask the orthodontist to Step Out the Mesial of the canine. The orthodontist should be able to correct it with either 1). placing the bend in the wire or 2). repositioning the bracket more mesially.

 

[charlestweed]

The diagram above shows the correct first order bend. For the tooth to rotate, that bend section of the arch wire has to be fully engaged to the bracket slot. A steel ligature (or a figure 8 alastic tie) must be used. If your orthodontist's assistant just puts a regular color o-tie on that canine bracket, it probably won't rotate much.