Orthodontic Retention on the Maxillary Stability After SARME Using Laser Scanner

Not Applicable

Completed

• Conditions: Maxillary Hypoplasia

• Registration Number: NCT01770782
• Lead Sponsor: Max Domingues Pereira

Brief Summary

The objective of this study was to evaluate the effect of the orthodontic retainer on transverse maxillary dental and skeletal stability after SARME.

Detailed Description

Methods: Ninety digitized dental casts of 30 adult patients (18 males and 12 females) submitted to SARME using the Hyrax expansion appliance were evaluated. Patients were distributed into two groups: Group Without Retention (GSC) n = 15; and Group With Retention (GCC) n = 15. In the GCC group, a Transpalatal Arch (TPA) was installed for retention soon after removal of the expander. The dental casts were scanned using a Vivid 9i 3D laser scanner (Konica Minolta, Wayne, NJ). The plaster models were performed preoperatively (T1), 4 months after the expander was removed (T2), and 10 months after the end of the expansion (T3). The distances measured were Inter-Cusps of Premolars and Molars (Inter-Cusp PM) (Inter-Cusp M), Inter-Cervicals of Premolars and Molars (Inter-Cervical PM) (Inter-Cervical M), Inter-WALA edges of Premolars and Molars (PM Inter-BW) (BW Inter-M), palatal height at the molar, and palatal area and volume at T1, T2, and T3.

Study Timeline

• Status Verified: 2009-07
• Study Start: 2009-08
• Primary Completion: 2010-02
• Study Completion: 2011-01
• Study First Submitted: 2013-01-16
• Study First Submitted QC: 2013-01-17
• Last Update Submitted: 2013-01-17
• Study First Posted: 2013-01-18
• Last Update Posted: 2013-01-18

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

• Adult patients with bilateral transverse maxillary deficiencies greater than 5 mm

Exclusion Criteria

• Patients with previous histories of maxillary surgery,
• congenital craniofacial malformations and
• unilateral transverse maxillary deficiencies

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Maxillary Stability	up to 10 months after the end of expansion	Laser scanner to create a 3D virtual dental cast

Trial Locations

Locations (1)

Federal University of Sao Paulo; 🇧🇷 Sao Paulo, SP, Brazil