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NTI Fabrication with SNAP Acrylic |
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Rules of Control of Parafunction
I. Minimize muscle contraction intensity
A) Provide for incisor edge contact only; Prevent canine and molar contact
1. Opposing incisors can both be covered in plastic.
2. Canine(s) can be covered in plastic, but cannot contact opposing plastic or teeth.
II. Optimize condylar orientation during occluding events
A) Minimize rotation of condyle by minimizing the vertical dimension of occluding in all excursions
1. VDO can be increased as therapeutically indicated only for Primary Clenching.
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CROWDING
For severely crowded teeth, aggressively relieve the internal and/or phalges of the device to provide for a non-binding coverage..
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Relining the device with damp, doughy acrylic. Upon initial removal prior to the acrylic fully hardening...
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...aggressively relieve the internals with a scalpel.reduce the distal portion of the DE...
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...and add acrylic to the anterior portion of the DE...
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...to allow for a positive contact through the incisors' long axis...
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...once the acrylic has cured, it can be reduced down...
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...to the level of the indentation made by the incisors.
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Chairside 
