Effects of surgery-first approach versus conventional orthognathic approach on upper airway change and sleep quality.

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20230601002

Enrollment

Registered

2023-06-01

Start date

2022-10-03

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Patients who undergo mandibular setback surgery with or without maxillary Orthognathic surgery

Interventions

Patients who undergo mandibular setback surgery with or without maxillary surgery using the COA. ,Patients who undergo mandibular setback surgery with or without maxillary surgery using the SFA.

Prevention,Prevention

COA,SFA

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: - ASA physical status I or II - BMI < 35 kg/m2 - Diagnosed as mandibular prognathism or skeletal class III malocclusion - Require a mandibular setback surgery with bilateral sagittal split osteotomy (BSSRO) with or without maxillary surgery

Exclusion criteria

Exclusion criteria: - Present with any uncontrolled systemic disease or undergoing the medications that may affect the sleep condition - Existing OSA - Craniofacial syndrome - Previous orthognathic surgery or naso-oropharynx surgery - Significant change in BMI during the study period

Design outcomes

Primary

Measure	Time frame
Sleep study result Before, immediate after surgery, 6 months after surgery AHI	—

Secondary

Measure	Time frame
Airway volume Before, immediate after surgery, 6 months after surgery cm3	—

Countries

Thailand

Contacts

Public ContactWichuda Kongsong

Faculty of Dentistry, Chulalongkorn University

wichuda.k@chula.ac.th022188590

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026