Skip to Content



The MATRx sleep lab system is a remote oral titration device that enables dentists to know in advance which patients will respond to oral appliance therapy and predicts the therapeutic target protrusive position. The dentist makes an adjustable oral tray. During the sleep study, the technologist controls an attached light-weight motor that positions the tray until the sleep apnea is controlled.

What to Expect               

The MATRx titration study is essentially the same as a polysomnogram with the addition of the MATRx therapy. The technician will escort you to a comfortable, private bedroom. The room is equipped with a television set with cable. You will be asked to change into sleeping clothes (shorts or sweat pants and a loose top are best). The technician will attach the sensors to your head and body, and at approximately 10:30 p.m. to 11:30 p.m., you will be asked to go to sleep and the MATRx titration study will begin.

What to do Prior to the MATRx Titration Study

  • Avoid caffeine after noon on the day of the test. This includes colas and some other soft drinks, coffee, tea and chocolate. If you drink alcohol on a regular basis (every day or almost every day), please have your usual amount on the day of the test. If you drink infrequently, (once a week or less) please do not have alcohol on the day of the test.
  • Wash hair with shampoo to remove all hair products and then dry hair. Some products can interfere with the electrode contact with your scalp.
  • Remove nail polish from one index finger, either hand, to allow for the placement of an oxygen sensor.
  • Try not to nap on the day of the CPAP titration study.
  • Bring any medications that you usually take at bedtime or in the morning, unless you have specific instructions from your doctor not to do so. Also, bring a list of all the medications you have taken in the two weeks prior to the test.
  • Bring anything that might make your night in the laboratory more comfortable (pillows, earplugs, masks or stuffed animals).

The sleep center supplies toiletries including shampoo, conditioner, toothbrush, toothpaste and lotion.