No. Having two slots does not mean necessarily that two archwires have to be always used. We can work with DS as if it were a traditional piece using only one orthodontic archwire in the 0.022´´ slot or 0.018´´ slot. According to the need and the orthodontic knowledge of the professional the use of two wires can be indicated. The DS allows for infinite possibilities.
Some possibilities with the DS.
The advantage is that we have an extremely modern tool that has two slots in one piece. With this we have countless possibilities during the treatment, where the variations occur according to the need of the professional.
If we consider 3 different alloys of wires and 7 different diameters we can, in a single slot, have 21 different possibilities. But if we now work with two parallel slots we can have 442 variations (Figure B). Therefore avoiding the use of many auxiliaries. Possibilities may vary according to the alloy and the diameter.
It offers you the possibility to perform treatments with 2 independent archwires which makes the treatment easier and faster than when conventional braces are used
You may work the same way you are used to. However we suggest using double Edgewise tubes for all molar teeth.
The currently DS prescription is Roth.
The use of both intra-alveolar and extra-alveolar mini-implants are excellent skeletal anchorage devices so when necessary we should always use them with the DS system.
We have been working with the DS bracket system since 2014 and have noticed that in some situations many auxiliaries devices are unnecessary, which enhances patient comfort. Although there might be situations in which they could be necessary, specially the anchorage systems.
A: The most important thing when working with two wires is that they should not touch one another in order to avoid friction. The friction can make it difficult for the NiTi archwire to return to its original form (Figure D). The arrangement of the archwires avoids friction (Figure E).
Note: Whenever possible we will try to avoid the crossing of wires, but depending on the mechanics that will be performed or the position of the dental element that will be moved it will not be possible to avoid the contact between them, if this happens we should work with smaller diameter NiTi archwires .
Figure D – Yellow arrows showing friction points due to wire crossing contact.
Figure E – Archwires configured in a way that one does not interfere with the movement of the other, thus avoiding friction.
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