A prospective randomized clinical trial of two miniature bone screws assisted by rapid maxillary expanders

Status

Recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2100050944

Enrollment

Unknown

Registered

2021-09-08

Start date

2021-09-30

Completion date

Unknown

Last updated

2022-05-16

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

Conditions

Malocclusion with insufficient maxillary width

Interventions

Group 1:Miniature bone screw assisted maxillary rapid expansion (dental support type)

Group 2:Miniature bone screw-assisted maxillary rapid expansion (dental-bone mixed support type)

Eligibility

Sex/Gender

All

Age

18 Years to 29 Years

Inclusion criteria

Inclusion criteria: The width of the base of the jaw is insufficient (On CBCT coronal view, the distance between the root furcations of the maxillary first molars is smaller than that of the mandibular first molars, and the intraoral examination shows unilateral or bilateral posterior crossbite), the anatomy of the abutment is basically complete, and the periodontal condition is good.

Exclusion criteria

Exclusion criteria: Failure to expand the maxillary arch (CBCT showed that the median palatal suture was not expanded), patients with cleft lip and palate, and patients with combined sputum.

Design outcomes

Primary

Measure	Time frame
the position of mandibular;width of palatal suture;	—

Countries

China

Contacts

Public ContactLei Qiaoling

Shenzhen Hospital of Southern Medical University

leiqiaoling000@163.com+86 17722690274

Outcome results

None listed

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