Dorsal Appliance
Dorsal Appliances utilize “fins” to guide the appliance and keep patients from bruxism and painful movements at night.
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Restoration Details
Indications
1. Snoring
2. Mild to moderate obstructive sleep apnea (OSA)
3. Patients who cannot tolerate CPAP
4. Sleep-related breathing disorders caused by retrognathic mandible or tongue base collapse
5. Patients with good dentition or stable dentures for retention
Material Composition
1. Main structure: Ethylenvinylacetat、Thermoplastic
Polyurethan TPU
2. Adjustment components: Stainless steel screws & metal fins
Preparation Tips
1. Take accurate upper & lower impressions with no distortion.
2. Record centric relation & proper jaw position.
3. Ensure enough interocclusal space for the appliance.
4. Design the dorsal fin & guide planes precisely.
5. Use high-quality hard acrylic for strength and stability.
6. Adjust the advancement screws smoothly.
7. Polish completely to avoid irritation to oral mucosa.
Strength Characteristics (MPa)
1. Flexural strength: 60–100 MPa
2. Hardness: Rockwell M 80–90
3. High resistance to deformation, fracture, and wear under night‑time occlusal force.