How is a sleep appliance sized?

For general dentists prescribing mandibular advancement devices, the sizing workflow starts chairside. You capture maxillary and mandibular impressions or scans plus a protrusive bite registration at the intended starting advancement. That bite record locks in the inter-arch relationship the lab builds to. Without an accurate protrusive record, the appliance ships at an arbitrary position and first-night adjustability becomes guesswork rather than a calibrated starting point.

At the lab, a technician mounts the models into the recorded bite and fabricates upper and lower trays sized to each arch. Fit on the individual arch determines retention; the inter-arch hardware sets advancement. Monobloc designs fix both arches in one piece, while dual-arch titratable designs allow the patient to advance incrementally after delivery. Dani Dental fabricates both configurations, and every sleep case ships with the technician's direct line for questions before or after the delivery appointment.

Digital scans reduce model distortion and speed the process. A scan-to-delivery window at Dani runs 5-7 business days for standard sleep appliances. If a referring dentist sends conventional impressions, the same timeline applies once stone models are poured. Sizing accuracy at the lab is only as good as the bite record sent, so our sleep prescription form includes step-by-step record-taking guidance for offices that fit fewer than 10 appliances per year.