Root_Spring_for Molar_Uprighting | Essential Biomechanics
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- čas přidán 26. 08. 2024
- Tipping of mandibular molars is a very common problem in adult patients. This condition may initiate a vicious cycle of traumatic occlusion, functionally disturbing interferences and difficulties for prosthetic rehabilitation. In this "remake" of our most requested video, we demonstrate the 3 steps (fabrication, preactivation and compensation) for the proper application of a root correction spring anchored by a buccal miniscrew.
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- Free download of the preactivation diagram: bit.ly/2R8fLtu
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Special credit: The printing model used in this video was designed by Professor André Drumond, Brazil. Visit his website (www.orthovirtu...) to find excellent material on Digital Orthodontics.
Great!
Is the preactivation diagram no longer available?
I wish my orthodontist would do stuff like this. My orthodontist is lazy and tells me my tooth can't be uprighted. I want to tell her then take $1000 off of what I owe since you can't straighten all my teeth.
Wow
Thanks a for sharing your knowledge
God bless you.
Show de bola!! Professor, esta geometría VI tem efecto no parafusso rotando no sentido antihorario, pode o parafusso desroscar , posso usar parafusso rosca antihoraria?
Olá Dr Sérgio. Sim, exatamente. vc não só pode como deve usar um parafuso com rosca antihorária neste caso!
good mechanics but a simple mechanics is a way to go
If your case allow extrusion you are right. If extrusion is undesired, a root spring is the best solution.
Amazing Dr. 👏👏👏👏
I wish I can be like you.
can't we use reinforced anchorage from any other option like an acrylic base plate with a heavy wire soldered to it as a tad? I don't know if I could explain the meaning ☺️
Yes Dr! There are several options for anchorage in these cases: acrylic splints, lingual arches, a segment of rectangular wire in the other teeth. In our video czcams.com/video/isI1rEmTbD8/video.html, we've used the same spring but anchored in the fixed appliance.....check it out!
Professor, Excelente trabalho e didática. Em relação ao momento no miniimplante, ele não correria algum risco?
Obrigado. E boa pergunta! Sim, neste caso específico, o mini-implante tem que ser de rosca ESQUERDA, para que o momento aplicado pela alça o aperte ainda mais. Para a mesma mecânica do lado direito, aí sim você usa um mini-implante tradicional de rosca DIREITA. Sua pergunta é interessante, pois é mais um exemplo de que o uso de ancoragem esquelética não retira a necessidade de termos um bom conhecimento em biomecânica. Obrigado pela observação.
Thank you for this video! Looks not very dificult to make this spring.
How often do you usually examine such patients with tipped molars using spring? Does it need any activations?
If I use mini screw without bracket head and fix the wire to it will it work or still it`s better to use bracket head screw?
Dear Dr. It usually takes 4 months to solve a problem like this in a real scenario. I recommend to reactivate this loop each 1 or 2 months. And a bracket head is needed to apply the force system demonstrated in the video.
excellent video Dr!!! the link of preactivation diagram is crashed. Could you please help us with another one.
But what if we want just root movement not distalization¿
then you add a steel ligature to avoid the avoid the crown distalization
Dear Prof, where can I download the activation scheme? The Dropbox link don't work.
Please send me an email to blog@essentialbiomechanics.com
Bravo
If uprighting two molars, do I need to bond both to avoid unexpected movement of the distal one or bonding and uprighting the mesial one will be enough to push the distal one on its way back?
If I am using a different mini-screw (Vector Tas) which is not a bracket head, will that make any difference?
Good questions Dr. Usually the distal molar will receive a distal push with this mechanics. If you want to minimize this effect, you can add a ligature tie from the anterior region to the tipped molar - this will favour root mesial movement instead of distal crown movement. Regarding your miniscrew, I strongly advice you to use a bracket head type, because you need a fixed support (enables the application of a couple) in order to control the force system applied. Extra tip: moreover, in the present case, the miniscrew should have a reverse thread (counterclockwise or left).
@@essentialbiomechanics9381 Many thanks for sharing!
@@oana2023 you're welcome Dr!
@@essentialbiomechanics9381 your dedication and passion clearly are highlighted. Every one who is interested in orthodontic biomechanics truly appreciates this huge amount of work.
@@oana2023 thank you very much for your positive feedback Dr Oana!