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Stimulation of Condylar Growth by Using Miniscrew Implants to Control Lower Incisor Proclination during Fixed Twin-block Appliance Treatment in Skeletal Class II Adolescents: an Exploratory Randomized Controlled Trial

Stimulation of Condylar Growth by Using Miniscrew Implants to Control Lower Incisor Proclination during Fixed Twin-block Appliance Treatment in Skeletal Class II Adolescents: an Exploratory Randomized Controlled Trial

Status
Recruiting
Phases
Early Phase 1
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR1900026753
Enrollment
Unknown
Registered
2019-10-20
Start date
2022-09-01
Completion date
Unknown
Last updated
2022-10-17

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

Conditions

Angle`s class II malocclusion

Interventions

Group 1:mandibular advancement with fixed Twinblock appliance
Group 2:mandibular advancement with fixed Twinblock appliance+MIA

Sponsors

The Ninth People's Hospital, College of Stomatology, Shanghai Jiaotong University School of Medicine
Lead Sponsor

Eligibility

Sex/Gender
All
Age
12 Years to 18 Years

Inclusion criteria

Inclusion criteria: 1. Skeletal class II division 1 malocclusion patient from Department of Orthodontics, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine. 2. No gender limitation(12-18 years old). 3. Cephalometrics screening criteria:(1)Pog-N-Per>10 mm; (2)ANB > 5 degree; (3)Wit > 5mm; (4)22 degree 5mm;(2) dentition: early permanent teeth; 5. Bone age screening indicators:Cervical vertibra analysis (OReilly, 1988) CVI: II~III (peak growth period).

Exclusion criteria

Exclusion criteria: 1. A history of congenital, hereditary systemic diseases that may lead to facial deformities. 2. A history of acquired diseases that affect facial development, such as severe facial trauma and infection history. 3. History of temporomandibular joint symptoms (including: history of click, pain, mouth opening limitation, etc.). 4. History of diseases affecting facial development of nasopharyngeal diseases (including adenoid hypertrophy, tonsil hypertrophy, mouth breathing, etc.). 5. Patients with mental illness and other conditions who unable to cooperate with orthodontic treatment. 6. Patients with previous orthodontic treatment history. 7. Patients with significant mandibular deviation (the deviation of the chin point is greater than 3mm). 8. The main cause of the patient is due to excessive maxillary development, and mandibular development is acceptable.

Design outcomes

Primary

MeasureTime frame
growth of condyle;—

Countries

China

Contacts

Public ContactNing Zhao

Department of Orthodontics, the Ninth People's Hospital, College of Stomatology, Shanghai Jiaotong University School of Medicine

zhaon1995@126.com+86 13661729690

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026