Fine detail impressions of both arches are critical to the success of your sleep appliance. Make sure your impressions have their DMD:
Impressions for sleep appliances need to capture the landmarks of a denture impression with the fine detail of a crown and bridge impression. Full upper and lower impressions must effectively depict the molar region and 5mm of tissue distal to the posterior molars if possible. It is also important to clearly capture the gingival sulcus.
We suggest using a PVS impression material – a heavy body with a light body wash. Please be sure to carefully monitor working and set times. Below is a quick tutorial on an effective PVS impression technique:
If you prefer to send models, please use Grade 4 stone for fabrication.
Please check all impressions for distortions, including voids, drag, bubbles, incomplete arch
areas, and broken teeth. The four biggest culprits for impression distortion are:
- Trays – be sure to choose a sturdy tray that is large enough for the patient.
- Time – pay close attention to the manufacturer’s recommendations for working and setting times.
- Temperature – impression materials work best at 72 degrees. For every degree cooler, add 3 seconds to intra-oral set time. For every degree warmer, subtract 3 seconds from set time
- Contamination – keep the mixing tips fully submerged in the impression material to avoid air bubbles.
For more information, download our Dental Sleep Medicine Impression Troubleshooting Guide
If you are using CEREC Connect , please include “Leave All Tissue” in the notes.
George Gauge Techniques
George Gauge Instructional Video
Download the George Gauge Worksheet