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Comparison of orthodontic and speech therapy effects between different mandibular expanders devices: Williams and Schwarz

Comparison of dentoskeletal effects and orofacial functions between the Williams and Schwarz expanders

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-2k34tmb
Enrollment
Unknown
Registered
2024-12-03
Start date
2023-09-12
Completion date
Unknown
Last updated
2025-10-27

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

Conditions

Malocclusion

Interventions

This is a two-arm, single-blind, randomized controlled clinical study. In this randomized clinical trial, 32 research participants with Class I malocclusion and atresia of the upper and lower dental a
and Schwarz Group composed of 16 individuals treated with ERM with Hyrax and with dental expansion of the lower arch with the removable Schwarz plate. Digital dental models, teleradiography exams and
arc length
arch perimeter
Little irregularity index
tilt of the lower molars
horizontal and vertical overlap. In teleradiographs overbite, overjet, 1.PP and IMPA will be analyzed. Pre- and post-expansion orofacial myofunctional analysis will be evaluated using the MBGR protoco
E06.658.703

Sponsors

Faculdade de Odontologia de Bauru da Universidade de São Paulo (FOB - USP)
Lead Sponsor
Faculdade de Odontologia de Bauru da Universidade de São Paulo (FOB - USP)
Collaborator

Eligibility

Age
6 Years to 11 Years

Inclusion criteria

Inclusion criteria: Both sexes; 6 to 11 years; mixed dentition; Class I malocclusion; atresia of the upper and lower dental arch; mild to moderate crowding of the lower dental arch

Exclusion criteria

Exclusion criteria: Patients with a history of previous orthodontic treatment or extraction of permanent teeth; patients with systemic or neurological alterations that difficult orthodontic therapy; presence of craniofacial syndromes or anomalies; loss of deciduous mandibular canines and second molars; presence of tooth agenesis

Design outcomes

Primary

MeasureTime frame
The primary outcomes will consist of measurements performed on digital dental models and teleradiograph images for evaluations and comparisons of the dentoskeletal effects of inferior dentoalveolar expansion of the Williams and Schwarz appliances.—

Secondary

MeasureTime frame
The secondary outcomes will consist of assessments of orofacial functions, quality of life, plaque index and pain level to compare the alterations of the orofacial functions and other conditions after the procedure of expansion of the upper and lower arches.—

Countries

Brazil

Contacts

Public ContactBeatriz Quevedo

Faculdade de Odontologia de Bauru da Universidade de São Paulo (FOB - USP)

bq.beatrizquevedo@gmail.com+55 (14) 32358000

Outcome results

None listed

Source: REBEC (via WHO ICTRP)