Six Months Follow-up of Two and Four Mini Screws Supported Hyrax in Adults

Six Months Follow-up of Two and Four Mini Screws Supported Hyrax for Maxillary Expansion in Non-growing Patients: A Randomized Controlled Clinical Trial

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT06851624

Enrollment

Registered

2025-02-28

Start date

2023-02-02

Completion date

2025-01-05

Last updated

2025-02-28

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

Conditions

Transverse Maxillary Deficiency

Keywords

expansion,posterior crossbite

Brief summary

six months follow-up of two and four mini-screw supported hyrax for maxillary expansion in non-growing patients: A randomized controlled clinical trial

Detailed description

transverse malocclusion is very common in adult ,using conventional hyrax expander has many limitations and side effects such as buccal tipping, marginal bone loss, dento aloveolar expansion. in such cases , surgically assisted rapid palatal expansion used to be the option of choice ,due to the invasiveness of the procedure and co-morbidity associated with it ,minis crews assisted rapid expansion is recently introduced to overcome the complications of both convectional and surgically assisted rapid palatal expansion

Interventions

DEVICEMARPE

treating patients with transverse maxillary deficiency using minis crews supported hybrid hyrax

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

two experimental groups ,two screw supported and four screw supported hyrax

Eligibility

Sex/Gender

ALL

Age

18 Years to 30 Years

Healthy volunteers

Inclusion criteria

* adults male or female aged from 18-30 years with skeletal Maxillary constriction. * unilateral or bilateral Dental posterior cross-bite. * mid-palatal suture maturation (Grade C, D) according to F Angileri classification. * good oral hygiene,

Exclusion criteria

* no functional crossbite due to premature contacts. * no previous orthodontic treatment. * no buccal crossbite. * no craniofacial anomalies or syndromes

Design outcomes

Primary

Measure	Time frame	Description
Skeletal effects	6-8 months	To compare the amount of skeletal expansion using linear (mm) measurement extracted from cone beam computed tomography pre and post-expansion

Secondary

Measure	Time frame	Description
Dento-alveolar effects	6-8 months	To compare the amount of dento-alveolar expansion using linear (mm) measurement extracted from cone beam computed tomography pre and post-expansion

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026