Use of an oral appliance to reduce snoring and improve sleep during pregnancy

Oral Appliance Therapy for Improving Sleep Quality During Pregnancy: A Controlled Clinical Trial

Not applicable Interventional Texas A&M University · NCT03646214

This will test whether a removable midline traction oral appliance can reduce snoring and improve sleep quality for pregnant women who snore.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment20 (estimated)
Ages18 Years to 45 Years
SexFemale
SponsorTexas A&M University Academic / other
Locations1 site (Dallas, Texas)
Trial IDNCT03646214 on ClinicalTrials.gov

What this trial studies

Pregnant adults who snore will be fitted with a midline traction oral appliance and monitored with unintrusive home sleep recordings at baseline, during initial use, and after four weeks of nightly use. Each participant is expected to complete at least five consecutive weeks of participation, with the option to continue device use and periodic home recordings through the remainder of pregnancy. Objective breathing and sleep measures are collected for two consecutive nights at each time point, and participants complete brief surveys about sleep. Participants keep their oral appliance after the study.

Who should consider this trial

Good fit: Pregnant adults who currently snore, have at least eight teeth per arch, Mallampati I–II, palatine tonsils grade 0–2, can consent and use the home sleep recorder and appliance, and are ≤32 weeks pregnant are the intended participants.

Not a fit: People more than 32 weeks pregnant, those with uncontrolled serious illness, cardiovascular or rhythm disorders, TMJ problems, loose teeth/periodontal disease, prior UPPP, or who refuse to wear an oral appliance are unlikely to benefit from this intervention.

Why it matters

Potential benefit: If successful, the oral appliance could reduce snoring and improve sleep quality for pregnant people and potentially lower risks linked to pregnancy sleep-disordered breathing.

How similar studies have performed: Oral appliances have been shown to reduce snoring and mild-to-moderate obstructive sleep apnea in nonpregnant adults, but their use specifically in pregnant populations has been less studied.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Pregnant adults who snore
* At least 8 teeth per arch
* Mallampati score from I to II
* Palatine tonsils grade 0,1 or 2
* Capable of giving verbal and written informed consent
* Able to apply the sleep recorder and the oral appliance.

Exclusion Criteria:

* Pregnant \> 32 weeks
* Uncontrolled serious health issues
* Cardiovascular or cardiac rhythm disorders
* Pharmacological dependency
* Concomitant use of hypnotic agents or other sleep aids, nicotine or alcohol
* Ongoing temporomandibular joint disorders
* Loose teeth or periodontal disease
* History of uvulopalatopharyngoplasty (UPPP)

Where this trial is running

Dallas, Texas

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions SnoringSleep Fragmentation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.