the models are called TYPODONT models. In Brazil, they are easily found in any dental store. I'm sorry, but I don't know any international store that sell them online. Good luck!
This will also produce torques, depending on the dimension of te wire. In the present video, the aim was to apply ONLY intrusive forces, that's why the wire was only ligated to this anterior group of teeth. After intrusion is obtained (levelling), you can use a rectangular wire fully engaged to the bracket to apply torques according to the needs of the case.
@@essentialbiomechanics9381 Thank you, Dr. Could you please explain in another video the details of how to control torque when inserting incisor brackets?
Excellent Video Doctor, Thanks...May I ask a question? In low angle or normal angle cases, how do you make the decision to level the curve of Spee in the upper and lower by intrusion arches as shown in this video or to use the reverse curve of spee archwires to level the curve of spee ? What factors do you need to look out for to use an intrusion arch vs an RCOS archwire?
what was the answer you found? I was thinking lower face height - whether you want the relative extrusion of posteriors with RCOS (and the AP lengthening) or if you're aiming for true intrusion and no increase in LFH then an intrusion arch may be better?
Excellent Dr. Please Dr. I want to ask you about the intrusion of molar teeth by using the arch wire only and without interference of any kind of surgery even the minisecrew. thank you so much
Dear sandeep, if you ligate on central incisor region, you´ll have a force acting in front of the center of resistance of the anterior teeth, and you´ll have some proclination of the incisors. If this is your intention, this approach is fine. However, if you want to minimize this proclination, I suggest tying the wire in the lateral incisors region.
Some clinicians have experience and they do not measure the forces directly in the patient's mouth. If your dentist is a good clinician, do not worry with that!
I had same problem with teeth but just regular Damon braces fixed it, it took around 8 months to go down and get in one straight line. My ortho didn’t use that 2nd wire to fix it. I guess my teeth weren’t that stubborn
Miodrag Popov , I think you are worried about the possible side effects on posterior teeth (constriction), isn't it? The mechanics used in this video is indicated for short or mesofacial faces, in which the occlusal forces can counteract these side effects. I usually use this mechanics in the first archwires and during a short period. If you have problems with constrictions, a TPA and a lingual arch are good options to control the transversal dimensions.
Miodrag Popov, the extrusive forces are low and applied for a short period. The distal tipping of the first molar is also minimal because the contact with the second molar reduces this effect. Anyway, you have 2 options to control these effects: 1) unify the posterior segment with a rigid wire or 2) use an occlusal splint - this tool is very efficient with segmented mechanics ruclips.net/video/CXWyhEevGgQ/видео.html
We have two videos about the Mulligan archwires. Please see the links below: ruclips.net/video/EuCCE_x8dCk/видео.html ruclips.net/video/ohPQeKmpvak/видео.html
If the molars have different tip inclinations, does the activation have to be different to avoid anterior cant? Could it be useful to make two separate cantilevers?
Yes, you can use SS wires for both the main archwire and intrusion arch. The force levels delivered from these wires are higher, so I suggest using a small diameter SS wire (main archwire) and to reduce the degree of the bend in the intrusion arch. The gauge to check the intrusive force is the same.
Dear Thang Nguyen Tien, the control of proclination can be made by two ways. If you want to procline: 1) do not cinch (or distal bend) the intrusion arch and 2) make its ligation to an anterior position (central incisors). And how can you avoid proclination? by 1) cinching the intrusion arch and 2) tying it to a more posterior position (lateral incisors). In the video, these last two procedures were demonstrated. I hope these tips can be useful;
Essential Biomechanics thank you Dr. Of course they were useful for me. If I want to retract anterior sector and intrude at the same time so, what should I do? I hope you will do a video teaching that. Thanks you again doctor!
Essential Biomechanics I've seen the video, it's very nice and useful! Thank you a lot doctor! And I see you like martial arts also by putting the Ip Man movie sound track as background music :))
Hi Sara, I suggest you to look for a company that sell typodont material in your country. In Brazil, one company is www.ortocentral.com.br/, but I don´t know if they export to other countries.
Dear Maciej, probably it would take more time to have the same effect with reversed wires. To have a significant effect with a reversed continuous wire we need a more rigid one (.016 at least). In the presented case, this wire would produce higher forces. Therefore, the presented approach seem to be faster and safer.
I see Your point, doctor. Thank You for Your informative and prompt answer :) PS You've forgotten to mention how beautifully the tip-back moments contribute to Class II correction - another perk of auxiliary archwire :) Do You think there is any way to measure how much of the curve flattening occurs through posterior extrusion and how much through anterior intrusion? Do You believe changing of the force level (wire bend) would make a difference here?
The leveling effects using continuous archwires occurs mainly by posterior extrusion. I think that increasing the force level will increase the posterior extrusion effect rather than the anterior intrusion. After all, extrusion manifests faster and easier than intrusion, considering the biological point of view.
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Congratulations, very oriented to details, you go for perfection, even if the results are not perfect. Would love to have an Orthodontic like you. 👍
Ortho mastery at display!! Happy to learn from the best!!
Thanks for your positive feedback Dr!
Thank you vwry much Dr for the demo... May God bless u❤
Thank you so much Doctor.
Very cool. Thanks for sharing!
Brilliant video
please doctor tell me how i can get an orthodontic cast with moving teeth like this in the video, and whats it trading name.
the models are called TYPODONT models. In Brazil, they are easily found in any dental store. I'm sorry, but I don't know any international store that sell them online. Good luck!
Dear Gustavo, what's happening when you insert the lower intrusion arch in insisor brackets ??
This will also produce torques, depending on the dimension of te wire. In the present video, the aim was to apply ONLY intrusive forces, that's why the wire was only ligated to this anterior group of teeth. After intrusion is obtained (levelling), you can use a rectangular wire fully engaged to the bracket to apply torques according to the needs of the case.
@@essentialbiomechanics9381 Thank you, Dr. Could you please explain in another video the details of how to control torque when inserting incisor brackets?
@@phongdangngoc262 this topic is complex because of the several variable involved. But thanks for your suggestion.
Great video
Thanks Dr!
Dear Dr, how to prevent flaring of incisors while using utility arches...?
Basically, by cinching (or bending the terminal end) of the wire and by controlling the torque.
Excellent Video Doctor, Thanks...May I ask a question? In low angle or normal angle cases, how do you make the decision to level the curve of Spee in the upper and lower by intrusion arches as shown in this video or to use the reverse curve of spee archwires to level the curve of spee ? What factors do you need to look out for to use an intrusion arch vs an RCOS archwire?
what was the answer you found? I was thinking lower face height - whether you want the relative extrusion of posteriors with RCOS (and the AP lengthening) or if you're aiming for true intrusion and no increase in LFH then an intrusion arch may be better?
@@keithratcliff7896 yes that's correct
@@urumesemampilly5472 thanks
Excellent Dr.
Please Dr. I want to ask you about the intrusion of molar teeth by using the arch wire only and without interference of any kind of surgery even the minisecrew.
thank you so much
Why should we only ligate lateral incisor but not involve central incisor?
Dear sandeep, if you ligate on central incisor region, you´ll have a force acting in front of the center of resistance of the anterior teeth, and you´ll have some proclination of the incisors. If this is your intention, this approach is fine. However, if you want to minimize this proclination, I suggest tying the wire in the lateral incisors region.
how often should we recall the patient ? and do we need to change it every recall?
Que calibre son los arcos principales que tiene el.typodont, xq los arcos de.intrusion si se ve.que.son de TMA
Neste caso foram usados arcos contínuos de CuNiTi .013 associados aos arcos de intrusão de TMA 17x25
Essential Biomechanics muchas gracias, soy residente de 2do año de la.especialidad de ortodoncia, siempre veo.sus videos
Hi Dr., my dentist put an intrusion arch on my braces but he didn’t measure the force that need to apply. So this will not be effective?
Some clinicians have experience and they do not measure the forces directly in the patient's mouth. If your dentist is a good clinician, do not worry with that!
I had same problem with teeth but just regular Damon braces fixed it, it took around 8 months to go down and get in one straight line. My ortho didn’t use that 2nd wire to fix it. I guess my teeth weren’t that stubborn
Thank you ❤
Dear Gustavo, how do you control posterior anchorage?
Miodrag Popov , I think you are worried about the possible side effects on posterior teeth (constriction), isn't it? The mechanics used in this video is indicated for short or mesofacial faces, in which the occlusal forces can counteract these side effects. I usually use this mechanics in the first archwires and during a short period. If you have problems with constrictions, a TPA and a lingual arch are good options to control the transversal dimensions.
Essential Biomechanics, I am worried about extrusive force and distal tipping in normal face. How can we avoid that?
Miodrag Popov, the extrusive forces are low and applied for a short period. The distal tipping of the first molar is also minimal because the contact with the second molar reduces this effect. Anyway, you have 2 options to control these effects: 1) unify the posterior segment with a rigid wire or 2) use an occlusal splint - this tool is very efficient with segmented mechanics ruclips.net/video/CXWyhEevGgQ/видео.html
Can you show us how to make Muligan overlay?
We have two videos about the Mulligan archwires. Please see the links below:
ruclips.net/video/EuCCE_x8dCk/видео.html
ruclips.net/video/ohPQeKmpvak/видео.html
Excellent
Thank you Dr Ravi!
If the molars have different tip inclinations, does the activation have to be different to avoid anterior cant? Could it be useful to make two separate cantilevers?
In this case you should try asymmetric bends ("tipbacks") until the anterior part of the arch is relatively symmetric in the anterior region.
Can lingual braces push long teeth back into gums?
Thank you
Dr. if I want to use a SS wire.. instead of the CUNiTi wire..as a main arch wire.. what guage you will prefer.. and for the intrusion arch as well?
Yes, you can use SS wires for both the main archwire and intrusion arch. The force levels delivered from these wires are higher, so I suggest using a small diameter SS wire (main archwire) and to reduce the degree of the bend in the intrusion arch. The gauge to check the intrusive force is the same.
Dr. Gustavo, how do you control the incisors flaring?
Dear Thang Nguyen Tien, the control of proclination can be made by two ways. If you want to procline: 1) do not cinch (or distal bend) the intrusion arch and 2) make its ligation to an anterior position (central incisors). And how can you avoid proclination? by 1) cinching the intrusion arch and 2) tying it to a more posterior position (lateral incisors). In the video, these last two procedures were demonstrated. I hope these tips can be useful;
Essential Biomechanics thank you Dr. Of course they were useful for me. If I want to retract anterior sector and intrude at the same time so, what should I do? I hope you will do a video teaching that. Thanks you again doctor!
I think this video will help you ruclips.net/video/n2H1RTu3lrw/видео.html
Essential Biomechanics I've seen the video, it's very nice and useful! Thank you a lot doctor! And I see you like martial arts also by putting the Ip Man movie sound track as background music :))
Thang Nguyen Tien , yes, I appreciate martial arts, especially the biomechanics of the Wingchun style. ; )
what is the name of this cast and where can i buy?
Hi Sara, do you mean the typodont?
yes, from where can i buy
Hi Sara, I suggest you to look for a company that sell typodont material in your country. In Brazil, one company is www.ortocentral.com.br/, but I don´t know if they export to other countries.
Wouldn't a reverse curve of Spee arch essentially do the same thing?
Dear Maciej, probably it would take more time to have the same effect with reversed wires. To have a significant effect with a reversed continuous wire we need a more rigid one (.016 at least). In the presented case, this wire would produce higher forces. Therefore, the presented approach seem to be faster and safer.
I see Your point, doctor. Thank You for Your informative and prompt answer :) PS You've forgotten to mention how beautifully the tip-back moments contribute to Class II correction - another perk of auxiliary archwire :)
Do You think there is any way to measure how much of the curve flattening occurs through posterior extrusion and how much through anterior intrusion? Do You believe changing of the force level (wire bend) would make a difference here?
The leveling effects using continuous archwires occurs mainly by posterior extrusion. I think that increasing the force level will increase the posterior extrusion effect rather than the anterior intrusion. After all, extrusion manifests faster and easier than intrusion, considering the biological point of view.
Thank You again for smart and prompt answer :)
thanks a lot
You're welcome Dr!
What's the gauge that u used to measure force in antr component?
Hi dhivya! The dynamometer is from the brand correx (range: 25-250g). It´s a very useful tool.
Dear Sir, what about in condition that lower incisors are crowding? Do we have to align all lower teeth with the chance of lower anterior flaring?
Alignment is imp before attempting intrusion
great,,,thank you
You cannot intrude incisors in the mandible. They only become protrusive i hate that misunderstandings.
U can intrude with proclining
How do you pronounce the CuNiTi wires is it Cunty Wires ?
wow
The music 💔😭
Adresss plisss
Thank you so much 🥹I’m going to try this and I’ll come to tell you how it’ll go