Evaluation of Skeletal Effect of 3D-Printed Twin Block through randomized clinical trial

Evaluation of Skeletal Effect of 3D-Printed Twin Block Compared to the Conventional Twin Block in Management of Class II Malocclusion in Growing Patients: A Randomized Controlled Trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

PACTR

Registry ID

PACTR202512873358245

Enrollment

Registered

2025-12-10

Start date

2025-10-28

Completion date

Unknown

Last updated

2026-09-14

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

Conditions

Class II Skeletal malocclusion

Interventions

3D printed twin block group

Conventional Twin block group

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy patients according to the American Society of Anaesthesiology Classification (ASA I and II). Growing children with skeletal Class II relationship (ANB > 4°). Mandibular retrognathia (SNB < 78°). Cooperative child and compliant parents.

Exclusion criteria

Exclusion criteria: o Severe chronic conditions such as asthma and allergy, neuropsychiatric disorders, and craniofacial syndromes. Previous history of orthodontic treatment. Posterior crossbites or severe maxillary transverse deficiency. Severe facial asymmetry determined by clinical or radiographical examination. Systemic diseases that may affect the orthodontic treatment results.

Design outcomes

Primary

Measure	Time frame
Skeletal Class II profile correction	—

Secondary

Measure	Time frame
Change in incisive inclination;Vertical opening;Soft tissue convexity correction	—

Countries

Egypt

Contacts

Public ContactNoha Roziek

Master Student

noha.roziek@dentistry.cu.edu.eg+201020861136

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Sep 19, 2026