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If the acrylic is contacting the tooth on the palatal aspect then the tooth shouldn’t move as it has no space to move into. Always try to keep wirework passive for when it leaves the lab.

This appliance will expand any teeth that are in contact with the baseplate. That is where the force is passed from the screw to the teeth. Whatever you want expanded, needs to have acrylic in contact with it so that the force is transferred to them. This example only expanded the posterior teeth, prior to another appliance being used to retract the anterior teeth (particularly the incisors). Hope this helps explain it?

Thanks for your comment. This was one of the first videos we made with what equipment we had. We are trying to improve the quality with newer cameras and such when staff have time to do it. Appreciate your comment though.

We use a pink modelling wax, but you could use anything. It is only there to secure the screw to the model whilst applying the baseplate.

No problem

Adams 64 pliers for the Adams cribs. No others.

Thanks for commenting. The Southend clasp is used to keep the anterior part of yhe appliance in place. It is a fixative, or retentive component and is better suited for use on anterior teeth. Adams clasps can damage the lips and don't engage undercuts adequately.

@@dentaltechnology-cardiffme4022 any reason why using this than passive labial bow

@@pingmichael878 you can use this for the teeth it contacts, but it is a fixative component rather than a retainer, which the labial bow is.

Thanks for watching and taking time to comment. Would you like to expand on which element (or elements) of the technique you are referring to as "abysmal"? Interested to find out what it is you find so odd. Thanks.

@@dentaltechnology-cardiffme4022 First off, my apologies for being so blunt. I didn't mean it that way. I just noticed your 'bending' finger is always a few mills from the jaws of the pliers. This will introduce a bend where one is not needed. I used to get my arse kicked for that. Anyway, I have ordered some Adams (65's) and a reel of 0.7mm SS and will try to video how I used to do this. I have no casts, so will have to go freestyle. Watch this space...

Not yet Im afraid. We are doing our best to develop this channel, unfortunately time is restricted with our other work duties. Thanks for the suggestion, we will add Delta clasps to our list!

3 pin or toungstin tip

Hi and thanks for your question. The expansion screw used here is for tooth movement only. There is some evidence that shows bone changes that demonstrate expansive growth. By backwards I assume you mean distally? No, that is a much more complicated expectation way beyond this little screws capability. Hope this helps.

@@dentaltechnology-cardiffme4022 & &

Congratulations Mihaela. This is a classic appliance that deserves it's place in the orthodontic Hall of Fame!

It is always better to cure the acrylic following manufacturers recommended instructions. Under pressure and in warm water means a fuller cure, creating longer and stronger polymer chain/ reaction. I have heard of appliances cured in warm air environments but I wouldnt vouch for the effectiveness of that.

Hope it helped. As will the others demonstrations!

Try and visualise the wire when you bend it, as if the wire work is still on the model. Otherwise just keep checking back to the model. You may find you spend more time checking than bending to start with, but that will soon change!

Yes it is, but its a variation whereby the guard wire and tagging are all constructed from one piece of wire.

Thanks for your comment, I would say it depends on your clinician! Usually these are activated outside of the oral cavity, so it makes no difference which way the arrow is pointing.

Thank you!

Thanks for your answer, and I don't wish to be too critical as I appreciate what you're trying to do, but I think it only fair to give those watching this a proper understanding. Looking at your spring, the mesial coil lines up with the mesial of the lateral, but the distal coil extends past the distal line of the lateral. You are partly right in what you state, the distal coil does not move, only rotate.However, by the very nature of the rotational movement of the distal coil the second (mesial) coil must move forward (labially) and if it was to extend past the point of the mesial edge it could contact the abutment tooth. As this is an educational video from a respected seat of learning I feel that basic foundations should be put across, otherwise someone watching this may believe there's no limit to the width. Sorry for the long reply.

No problem Pelibob Bob - thank you for your observations. Hopefully those watching can take on board the valuable comments made. Thanks again!

Pelibob Bob see reply above. Thanks!

Yousif Tijani 😂😂😂

0,60 slds

0.5mm for this spring

+Szara Dental Lab Thanks, and great channel too!

+Chris Dodd There is an increase in flexibility with having the helices further apart; allows for a greater range of motion as well. The activation can be easier with more space around them as well (acrylic spacing comes into play here too)