This project examines sleep (e.g. prevalence of obstructive sleep apnea(OSA)), dimension of upper airway, jaw function, well-being and quality of life in children with large overjet compared to a control group. In addition, the effect of treatment with a mandibular advancement device (MAD) on sleep, upper airway and jaw function are examined, and how these factors affect the children's well-being and quality of life.
Age range
9 Years – 14 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Presence and grade of obstructive sleep apnea
Timeframe: Baseline
Presence and grade of obstructive sleep apnea
Timeframe: 4-8 months from baseline (after expansion plate)
Presence and grade of obstructive sleep apnea
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Oxygen desaturation index (ODI)
Timeframe: Baseline
Oxygen desaturation index (ODI)
Timeframe: 4-8 months from baseline (after expansion plate)
Oxygen desaturation index (ODI)
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Snore Index
Timeframe: Baseline
Snore Index
Timeframe: 4-8 months from baseline (after expansion plate)
Snore Index
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Lowest SpO2%
Timeframe: Baseline
Lowest SpO2%
Timeframe: 4-8 months from baseline (after expansion plate)
Lowest SpO2%
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Average SpO2%
Timeframe: Baseline
Average SpO2%
Timeframe: 4-8 months from baseline (after expansion plate)
Average SpO2%
Timeframe: 14-18 months from baseline (after z-activator (MAD))
SpO2 under 90 %
Timeframe: Baseline
SpO2 under 90 %
Timeframe: 4-8 months from baseline (after expansion plate)
SpO2 under 90 %
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Pulse Average
Timeframe: Baseline
Pulse Average
Timeframe: 4-8 months from baseline (after expansion plate)
Pulse Average
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Oximeter quality %
Timeframe: Baseline
Oximeter quality %
Timeframe: 4-8 months from baseline (after expansion plate)
Oximeter quality %
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Flow quality %
Timeframe: Baseline
Flow quality %
Timeframe: 4-8 months from baseline (after expansion plate)
Flow quality %
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Respiratory inductance plethysmography (RIP) quality %
Timeframe: Baseline
Respiratory inductance plethysmography (RIP) quality %
Timeframe: 4-8 months from baseline (after expansion plate)
Respiratory inductance plethysmography (RIP) quality %
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Estimated sleep efficiency %
Timeframe: Baseline
Estimated sleep efficiency %
Timeframe: 4-8 months from baseline (after expansion plate)
Estimated sleep efficiency %
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Respiration rate
Timeframe: Baseline
Respiration rate
Timeframe: 4-8 months from baseline (after expansion plate)
Respiration rate
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Epworth Sleepiness Scale for Children and Adolescents (ESS(CHAD))
Timeframe: Baseline
Epworth Sleepiness Scale for Children and Adolescents (ESS(CHAD))
Timeframe: 4-8 months from baseline (after expansion plate)
Epworth Sleepiness Scale for Children and Adolescents (ESS(CHAD))
Timeframe: 14-18 months from baseline (after z-activator (MAD))
Berlin questionnaire
Timeframe: Baseline
Berlin questionnaire
Timeframe: 4-8 months from baseline (after expansion plate)
Berlin questionnaire
Timeframe: 14-18 months from baseline (after z-activator (MAD))