Thermoflex (Impak) Night Guard

Thousands of customers have expressed their primary concern with splints — their poor fit. This issue leads to tedious chairside adjustments and, in some cases, necessitates re-appointments and re-impressions of the patient. THERMOFLEX (IMPAK) NIGHT GUARD offers a solution to this problem through its unique heat-softening and splint materials, combined with an innovative manufacturing process.

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Restoration Details

Indications

1. Nighttime tooth grinding & clenching (bruxism)

2. TMD / jaw muscle pain relief

3. Protection for crowns, veneers, implants

4. Mild to moderate occlusal trauma

5. Patients needing a slim, flexible, comfortable night guard

Material Composition

Impak is a thermoresponsive acrylic resin material, typically supplied as a two-component system (powder + liquid):

1. Powder component:
Poly(methyl methacrylate) (PMMA), benzoyl peroxide (initiator, 0.5–2%), pigments, opacifiers, plasticizers, organic/inorganic filler particles, inert anti-caking agents

2. Liquid component:
Methyl methacrylate (MMA) monomer, hydroquinone (inhibitor), plasticizers, cross-linking agents

Preparation Tips

1. Take accurate full-arch impressions to ensure proper fit

2. Ensure adequate interocclusal space for the appliance

3. Trim the model to create a smooth, rounded border

4. Adapt the material at recommended softening temperature (avoid overheating)

5. Adapt uniformly to cover occlusal/incisal surfaces without excessive thickness

6. Allow to cool completely before trimming and polishing

7. Finish with smooth, rounded edges for patient comfort

Strength Characteristics (MPa)

1. High breakage resistance: ~10× more fracture-resistant than conventional acrylics

2. Thermally adaptive stiffness: rigid when cold; flexible at oral temperature (37°C)

3. Good tear resistance & low water absorption

4. Shape memory: returns to form after deformation

5. Bondable to standard acrylics for repairs/relining