Effect of palatal width of upper oral appliance on respiratory status during sleep

Effect of palatal width of upper oral appliance on respiratory status during sleep - Oral appliance and respiratory status

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000039637

Enrollment

Registered

2020-03-31

Start date

2020-03-31

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

sleep apnea

Interventions

Oral apliance of 3 types 1.normal palatal width 2.wide palatal width 3.large vertical thickness

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Epworth scale score (less than 10) Regular nocturnal sleeper

Exclusion criteria

Exclusion criteria: 1.Symptoms of Temporomandibular Joint Disorders (only sound is OK) 2.severe sleep bruxism 3.moderate to severe nasal disorders 4/untreated missing teeth except wisdom teeth 5.Not under current occlusal splint therapy 6.taking any medication currently for psychiatric disorders

Design outcomes

Primary

Measure	Time frame
REI (Respiratory event index) ODI (Oxygen desaturation index)	—

Secondary

Measure	Time frame
SpO2 Soring sound Sleep quality	—

Countries

Japan

Contacts

Public ContactAkira Nishiyama

Tokyo Medical and Dental University Orofacial Pain Management

anishi.tmj@tmd.ac.jp03-5803-5713

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026