NCT04946201

Brief Summary

This research aims to provide pediatric patients with polysomnography (a sleep study) before and after orthodontic treatment to determine if the extraction of upper premolars for treating excessive overjet results in an increase of the AHI (Apnea Hypopnea Index) compared to similar patients treated without upper premolar extractions.

Trial Health

53
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial recruitment is currently suspended
Enrollment
60

participants targeted

Target at P25-P50 for all trials

Timeline
7mo left

Started Sep 2021

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
suspended

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress89%
Sep 2021Dec 2026

First Submitted

Initial submission to the registry

June 22, 2021

Completed
8 days until next milestone

First Posted

Study publicly available on registry

June 30, 2021

Completed
2 months until next milestone

Study Start

First participant enrolled

September 2, 2021

Completed
5.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2026

Last Updated

December 24, 2025

Status Verified

December 1, 2025

Enrollment Period

5.2 years

First QC Date

June 22, 2021

Last Update Submit

December 17, 2025

Conditions

Keywords

orthodonticbracesextractionteethoverjet

Outcome Measures

Primary Outcomes (1)

  • Risk of Obstructive Sleep Apnea

    Percentage of participants who develop obstructive sleep apnea following orthodontic treatment.

    30 months

Study Arms (2)

With Extractions

Patients in this group will undergo dental extractions.

Without Extractions

Patients in this group will not undergo dental extractions.

Eligibility Criteria

Age10 Years - 15 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17)
Sampling MethodNon-Probability Sample
Study Population

Registered orthodontic patients at the College of Dentistry and Turfland Dental Clinics.

You may qualify if:

  • years old
  • registered orthodontic patients
  • able to undergo routine orthodontic care and are registered to obtain an orthodontic appliance in the future.
  • do not have a high care need
  • no known hypercapnia or hypoventilation
  • no known allergies or nose blockages
  • diagnosed as Class II Division I (=6mm of overjet) and bilateral Class II half cusp or unilateral Class II full cusp.

You may not qualify if:

  • known hypercapnia or hypoventilation
  • patients with hypertrophic tonsils and adenoids
  • patients with allergies or nose blockages that interfere with breathing
  • patients who are not registered as orthodontic patients at research sites deemed acceptable to undergo routine orthodontic care

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Kentucky

Lexington, Kentucky, 40506, United States

Location

MeSH Terms

Conditions

Sleep Apnea, ObstructiveMalocclusionOverbite

Condition Hierarchy (Ancestors)

Sleep Apnea SyndromesApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System DiseasesTooth DiseasesStomatognathic DiseasesMalocclusion, Angle Class II

Study Officials

  • Mohamed Bazina, DDS, MSD

    University of Kentucky

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

June 22, 2021

First Posted

June 30, 2021

Study Start

September 2, 2021

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

December 1, 2026

Last Updated

December 24, 2025

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will not share

Locations