Changes in facial soft tissue asymmetry in Class II patients after orthognathic surgery

Changes in facial soft tissue asymmetry in Class II patients after orthognathic surgery using three-dimensional stereophotogrammetry

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN14166937

Enrollment

Registered

2024-05-13

Start date

2012-07-03

Completion date

Unknown

Last updated

2026-06-15

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

Conditions

Orthognathic surgery Surgery

Interventions

The cohort will be recruited from patients treated at the Department of Orthodontics, Institute of Stomatology of the Riga Stradinš University. The mean follow-up for these patients is at least 36 mo

Eligibility

Sex/Gender

All

Age

22 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. Presence of skeletal Class II malocclusion 2. No history of trauma or maxillofacial surgery, or recognized craniofacial syndromes as etiologic factors 3. No active growth at the time of surgery 4. Received preoperative and post-operative orthodontic treatment 5. Underwent a single or both jaw surgeries during the time period of 2011- 2021 at the Department of the Orthodontics, Institute of Stomatology of the Riga Stradinš University 6. All 3D facial images for all timepoints collected 7. Aged =22 years

Exclusion criteria

Exclusion criteria: 1. Cleft or other craniofacial anomalies or syndromes 2. Beards and/or mustaches at any timepoint 3. One of the 3D images was defective (for example, the head was moved during image capture, resulting in duplication of the image)

Design outcomes

Primary

Measure	Time frame
Asymmetric changes in soft-tissue evaluated using the three-dimensional 3dMDtrio (3dMD, Atlanta, GA) stereophotogrammetric system before surgery (T0), 6 months (T1) and 12 months (T2), 18 months (T3), 2 years (T4) and 3-5 years (T5) after surgery	—

Secondary

Measure	Time frame
1. Changes in facial asymmetry compared between the following demographics using the three-dimensional stereophotogrammetric system before surgery (T0), 6 months (T1) and 12 months (T2), 18 months (T3), 2 years (T4) and 3-5 years (T5) after surgery: 1.1. Time of image collection 1.2. Gender (male/female) 1.3. Type of surgery (single jaw, LeFort I/both jaw, bimaxillary) 1.4. Facial region groups 1.5. Comparing Class II and Class III patients in the long term	—

Measure

Time frame

1. Changes in facial asymmetry compared between the following demographics using the three-dimensional stereophotogrammetric system before surgery (T0), 6 months (T1) and 12 months (T2), 18 months (T3), 2 years (T4) and 3-5 years (T5) after surgery: 1.1. Time of image collection 1.2. Gender (male/female) 1.3. Type of surgery (single jaw, LeFort I/both jaw, bimaxillary) 1.4. Facial region groups 1.5. Comparing Class II and Class III patients in the long term

—

Countries

Latvia

Contacts

Public ContactAndris Abeltins

andris.abeltins@rsu.lv+371 (0)29556417

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 21, 2026