Analysis of the Dentoskeletal Effects of the Expander With Differential Opening
NCT ID: NCT02810353
Last Updated: 2016-06-22
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
UNKNOWN
NA
50 participants
INTERVENTIONAL
2015-05-31
2018-02-28
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Related Clinical Trials
Explore similar clinical trials based on study characteristics and research focus.
Dentoskeletal Effects of the Expander With Differential Opening and the Fan-type Expander
NCT03705871
Pain, Discomfort, and Functional Impairments During Rapid and Slow Maxillary Expansion
NCT04734054
Comparison of Two Tooth-borne Expanders in Rapid Maxillary Expansion
NCT03846518
Evaluation of Rapid Maxillary Expansion Facilitated by Micro-osteoperforation in Adolescent Patients With Skeletal Maxillary Constriction
NCT03772379
Pain and Discomfort During Maxillary Expansion
NCT03757468
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
Expander with differential opening group
The experimental group will comprise 25 patients who will be submitted to rapid maxillary expansion using the expander with differential opening. The expander will be composed by two 11-mm screws, one anteriorly and the other posteriorly positioned on the palate (Great lakes Orthodontics Ltd, NY, EUA).
Differential rapid maxillary expansion
Twenty-five patients will be submitted to rapid maxillary expansion using the expander with differential opening. Appliance anchorage will be provided by bands adapted either on the maxillary first permanent molars or on the second deciduous molars and circumferential clamps will be bonded to the maxillary deciduous canines. If the maxillary second deciduous molars will be banded, a lingual extension wire will be placed in the partially erupted maxillary first permanent molars. Both anterior and posterior screws will be activated with a complete turn a day during 6 days. Then, only the anterior screw will be additionally activated for 4 more days. After the active period of RME, the screws will be fixed with acrylic resin and the appliance will be kept as a retainer for 6 months.
Hyrax group
The control group will be comprised by 25 patients who will undergo rapid maxillary expansion using the conventional Hyrax expander. The expander will be composed by one 11-mm screw centrally positioned on the palate (Dentaurum, Ispringen, Germany).
Conventional rapid maxillary expansion
Twenty-five patients will undergo rapid maxillary expansion using conventional Hyrax expander. Bands will be adapted either on the maxillary first permanent molars or on second deciduous molars and circumferential clamps will be bonded to the maxillary deciduous canines. Similarly to the experimental group, a lingual extension wire will be placed in the partially erupted maxillary first permanent molars if the maxillary second deciduous molars will be banded. The expander screw will be activated with a complete turn a day during 6 days. After the expansion active phase, the screw will be fixed with acrylic resin and the appliance will be kept in the dental arch as a retainer for 6 months.
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
Differential rapid maxillary expansion
Twenty-five patients will be submitted to rapid maxillary expansion using the expander with differential opening. Appliance anchorage will be provided by bands adapted either on the maxillary first permanent molars or on the second deciduous molars and circumferential clamps will be bonded to the maxillary deciduous canines. If the maxillary second deciduous molars will be banded, a lingual extension wire will be placed in the partially erupted maxillary first permanent molars. Both anterior and posterior screws will be activated with a complete turn a day during 6 days. Then, only the anterior screw will be additionally activated for 4 more days. After the active period of RME, the screws will be fixed with acrylic resin and the appliance will be kept as a retainer for 6 months.
Conventional rapid maxillary expansion
Twenty-five patients will undergo rapid maxillary expansion using conventional Hyrax expander. Bands will be adapted either on the maxillary first permanent molars or on second deciduous molars and circumferential clamps will be bonded to the maxillary deciduous canines. Similarly to the experimental group, a lingual extension wire will be placed in the partially erupted maxillary first permanent molars if the maxillary second deciduous molars will be banded. The expander screw will be activated with a complete turn a day during 6 days. After the expansion active phase, the screw will be fixed with acrylic resin and the appliance will be kept in the dental arch as a retainer for 6 months.
Other Intervention Names
Discover alternative or legacy names that may be used to describe the listed interventions across different sources.
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
* Ages ranging from 7 to 11 years old;
* Mixed dentition;
* Maxillary constriction;
* No previous orthodontic treatment.
Exclusion Criteria
* Systemic and/or neurological diseases.
7 Years
11 Years
ALL
No
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
University of Sao Paulo
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Arthur César de Medeiros Alves
University of São Paulo
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Arthur Alves, DDS, MSc
Role: PRINCIPAL_INVESTIGATOR
Bauru Dental School, University of São Paulo
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
University of São Paulo
Bauru, São Paulo, Brazil
Countries
Review the countries where the study has at least one active or historical site.
Central Contacts
Reach out to these primary contacts for questions about participation or study logistics.
Facility Contacts
Find local site contact details for specific facilities participating in the trial.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
Bauru Dental School, USP
Identifier Type: -
Identifier Source: org_study_id
More Related Trials
Additional clinical trials that may be relevant based on similarity analysis.