Yes. But the lingual root torque and the extrusive force will already avoid buccal flaring of the crown. The slight lingual activation is not needed.

@@essentialbiomechanics9381 you're right, that's why you're a master! I hadn't thought that the extrusion is buccal to the Cres and tends to lingualize! thanks

Thanks for your positive feedback!

Thank you!

The archwire in the opposite quadrant (anchorage unit) is to minimize or avoid the movement in this side.

Aplicação controlada de binário vestíbulo-lingual, também conhecida como torque. Esta é uma das maneiras mais precisas de se aplicar torque. O fato de ter uma força vertical sendo aplicada simultaneamente não muda o fato do torque estar sendo aplicado.

You're welcome.

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It depends on the intensity of the inclination. I'd say that most cases are solved between 3 to 4 months, no more than that. Some times is even faster.

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Yes, you can. But it's not so fast as R-loop

Thanks for your positive feedback Dr!

the tear-drop loop is to reduce the load-deflection rate and the omega loop is an auxiliary that can be used to activate the appliance. Instead of activating from the distal (as in the video), you can tie a ligature wire from the molar to the omega as a second way of activation.

It's not impossible....but if we focus on ONE unit (the active unit that we want to move), and you draw the desired forces for this unit, you'll see that the forces needed to achieve equilibrium will always result in a geometry V, V or VI (considering the diagram of force system of our two-tooth segment.

@@essentialbiomechanics9381 thank you doctor. That helps me a lot

In this case you should try asymmetric bends ("tipbacks") until the anterior part of the arch is relatively symmetric in the anterior region.

Not a good idea with R-loops! Because this torque also adds buccal force in this case (association of forces and moments in this plane of space with this tool).

@@essentialbiomechanics9381 Thanks a lot! For extrusion is necessary open Angle 1,3,4?

@@danieleraviglia4012 open 1, 2 and 4. I suppose you'd like to join my new online workshop. Take a look at the full program here: payhip.com/b/FKyGC

Olá Dr Sérgio. Sim, exatamente. vc não só pode como deve usar um parafuso com rosca antihorária neste caso!

In the trial activation, we apply gentle couples (as shown in the video)....and then you check if the parallelism between the appliance and the tube occur exactly at the tube level - in this case, there will be only moments acting. If during trial activation you observe that the parallelism occur when the appliance is below the tube, there will be an intrusive force on this unit. On the other hand, if the parallelism occur when the appliance is above the tube, there will be an extrusive force on this unit.

@@essentialbiomechanics9381 thanks ❤️

200 g is enough for retraction of the anterior group of teeth

Aren't we retracting the whole arch as we are applying force on the wire. . How much force would be enough for the arch Sir. 200?

Sorry, now I got your question. The answer is the same - yes, 200 g is enough even for the entire distalization of upper arch. It may seems strange that we can use this same magnitude for different purposes, but it's true. Literature has shown that around 200gm is enough even for distalization of the entire amndibular dentition - Roberts WE, Viecilli RF, Chang C, Katona TR, Paydar NH. Biology of biomechanics: Finite element analysis of a statically determinate system to rotate the occlusal plane for correction of a skeletal Class III open-bite malocclusion. Am J Orthod Dentofacial Orthop. 2015 Dec;148(6):943-55.

FEMAP, Siemens

you're not the only to say this... kkkk

You're welcome. Thanks for your positive feedback!

by the application of a lingual force, in combination with the intrusive force. Therefore, note that I'm applying TWO forces simultaneously - the intrusive force (2nd order preactivation) + the lingual force (1st order preactivation).

Thanks for your suggestion Dr. In fact, seeing the forces in reactive unit can facilitate the anchorage preparation.

Que ótimo! Fico feliz de ajudar em seu aprendizado biomecânico!

In Brazil we found these typodonts in normal dental stores Dr. But I'm not sure where to get it in your country.

thanks Dr. Please get in contact with me by Instagram @essentialbiomechanics and DM me TEMPLATE

The aim was to produce a translational movement. Some tipping occured because I exaggerated the reactivation in this simulation. Clinically, I prefer to already add bends (gable effect) to minimize the final molar angulation problem. If necessary, it's also possible to make the bends and cinch the teeth for later correction.

Cómo va a mesializar con el mini implante dentó alveolar? No estorbará al mesializar?

Hola Dra. Las fuerzas y momentos percibidos por el mini-implante pueden ser soportados sin problemas, siempre y cuando en este caso (lado inferior izquierdo, por ejemplo) utilices un tornillo de rosca izquierda. Esto se debe a que, al aplicar algunas dobleces gable (no demostradas en el video), el tornillo recibirá un momento antihorario, mientras que el molar recibirá un momento horario para minimizar la inclinación hacia mesial. Gracias por la excelente pregunta y la oportunidad de aclarar este punto.

@@essentialbiomechanics9381ofcourse but if you use gable bend it could be in geometry IV which mean no moment neither

Hello where can I buy this typodont

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Yes, if you do not use the appropriate TAD. In this case, a left handed screw should be used.