A new elastic slot system and V-wire mechanics.
CONCLUSION: Control of torque for three-dimensional positioning of the teeth in the dental arch with rectangular slot geometry as used in straight-wire therapy is difficult. If torque is bent into the wire, because of the play there is a high risk that either too much, too little, or no moment is transmitted to the teeth. The V-slot archwire/bracket geometry in conjunction with nickel titanium composition has no play and allows a reduction of forces and moments with direct and continuous transmission of torque in the bracket. Because of the elasticity of the bracket, there is an upper limit to the moment possible.
PMID: 28530449 [PubMed - as supplied by publisher]
Source: The Angle Orthodontist - Category: Dentistry Authors: Wichelhaus A Tags: Angle Orthod Source Type: research
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