Comparing the clinical efficiency and effects on oral micro-environment of different molar distalization appliances made by 3D printer

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2100048402

Enrollment

Unknown

Registered

2021-07-06

Start date

2022-01-01

Completion date

Unknown

Last updated

2022-03-14

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

Conditions

Malocclusion

Interventions

Group 1:Extraoral arch

Group 2:Pendulum appliance

Group 3:Appliance with 3D print

Group 4:Bracketless invisible aligners

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. In the early stage of permanent dentition; 2. The maxillary first permanent molar needs to be moved distally; 3. The maxillary second permanent molars have not yet erupted.

Exclusion criteria

Exclusion criteria: 1. Have a history of orthodontic treatment; 2. There is a history of maxillary surgery.

Design outcomes

Primary

Measure	Time frame
Movement of upper first molar;Movement of upper incisors;Velocity of tooth movement;Arch form;Alveolar bone volume;Alveolar bone volume;Plaque index;Gingival index;	—

Countries

China

Contacts

Public ContactYan Bin

Affiliated Stomatological Hospital of Nanjing Medical University

byan@njmu.edu.cn+86 25 69593006

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Jun 5, 2026