Assessment of Maxillary Stability in Bimaxillary Orthognathic Patients Using the Inverted Sequence Approach

The Assessment of Maxillary Stability in Bimaxillary Orthognathic Patients Treated by Mandible-first Approach Versus Maxilla-first Approach; Randomized Controlled Clinical Trial

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03353116

Enrollment

Registered

2017-11-27

Start date

2018-01-01

Completion date

2019-06-01

Last updated

2022-10-20

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

Conditions

Class III Malocclusion

Brief summary

The investigator will assess the inverted sequence approach in the treatment of class III patient undergoing bimaxillary orthognathic surgery

Detailed description

The investigator will compare the maxillary stability in class III orthognathic patients undergoing bimaxillary surgery by two surgical approaches ; the mandible-first (intervention) and the maxilla-first (control)

Interventions

PROCEDUREthe mandible first

the mandible osteotomy is going to be done and fixed first

PROCEDUREthe maxilla first

the maxilla osteotomy is going to be done and fixed first

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Subject)

Eligibility

Sex/Gender

ALL

Age

16 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

1. Patients with skeletal class III malocclusion requiring bimaxillary orthognathic surgery 2. Patients free from any systemic disease 3. Patients who approved to be included in the trial and signed the informed consent 4. Patients with no signs or symptoms of temporomandibular disorders.

Exclusion criteria

1. Patients with cleft lip and palate can have an unfavorable effect on facial growth (LARRY M. WOLFORD, 2002) 2. Patients receiving chemotherapy or radiotherapy due to the risk of low bone quality and healing (JW, 2003) 3. Patients who refused to be included in the trial

Design outcomes

Primary

Measure	Time frame	Description
the change in maxilla stability	6 months	to assess the change in maxillary stability on cone beam CT obtained immediately and 6 month postoperative. the measuring unit is millimeter

Secondary

Measure	Time frame	Description
Patient satisfaction	6 month	the quality of life questionnaire describes the patient's satisfaction during the entire treatment period which is done through a questionnaire answered by the patient through a score between 0-10 the measuring unit is numerical

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026