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Passive self-ligating systems

Damon® system

Damon Qd sliding door-Dr Chamberland orthodontist in Quebec City

Damon® Q: passive self-ligating mechanism

Passive self-ligating systems differ from active systems in the way that a rigid clip such as a sliding door holds the archwire in place. The clip does not apply any force on the orthodontic archwire and the alignment in the 3 planes of space can only be achieved by using a bigger archwire to fill the slot, which decreases the play between the interface of the archwire and the inside of the slot of the bracket, unlike active self-ligating systems where the clip participates in the repositioning of the archwire at the bottom of the bracket slot.

Damon Q and Damon Clear from Ormco-Dr Chamberland orthodontist in Quebec City

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Damon Q Brackets-Dr Chamberland orthodontist in Quebec City

Damon® Q. Courtesy of Dr Jules Lemay.

Example of Damon® Q brackets system.

Initial stage of alignment.

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Damon Clear-Dr Chamberland orthodontist in Quebec City

Damon® Clear™. Courtesy of Dr Jules Lemay.

Example of Damon® Clear™ brackets in the maxilla and Damon® Q brackets in the mandible.

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Example of Damon® 3. This version of Damon® brackets is no longer available on the market. The clear part of the bracket was made of an acrylic polycarbonate which delaminated itself from the bonding pad.

Damon 3-Dr Chamberland orthodontist in Quebec City

Damon® 3. Courtesy of Dr Jules Lemay.

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Other systems

Passive systems all have a twin bracket design.

Lotus Plus closed on wire Ortho Technology-Dr Chamberland orthodontist in Quebec City

Ortho Technology Lotus® Plus

Carriere bracket from Ortho Organizers-Dr Chamberland orthodontist in Quebec City

Ortho Organizers Carriere™ bracket

Vision LP open American Orthodontics-Dr Chamberland orthodontist in Quebec City

Discovery SL Dentaurum-Dr Chamberland orthodontist in Quebec City

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SmartClip™ system

Clarity and SmartClip SL3 from Unitek-Dr Chamberland orthodontist in Quebec City

3M Unitek SmartClip™ SL3 and Clarity™ SL

The SmartClip™ system differs from other passive systems by the C-shaped clip that opens and closes like lobster claws. The archwire is thus never entirely entrapped by the clip like in a passive or active system. The archwire never being entrapped, it is often necessary to add an elastomeric ligature to hold the archwire in place.

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SmartClip-Dr Chamberland orthodontist in Quebec City

SmartClip™ and Clarity™ SL

Here is a clinical example of SmartClip™. Notice the width of the bracket (5.1 mm) and the presence of elastomeric ligatures to hold the archwire in place and prevent accidental disengagement. The C-shaped clip is really visible.

Clarity SL and SmartClip-Dr Chamberland orthodontist in Quebec City

Clarity™ SL in the maxilla and SmartClip™ in the mandible

Like the majority of bracket systems, the challenge, when a patient undergoes an orthodontic treatment, is to maintain an optimal oral hygiene.

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