- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04529057
Evaluation of the Effect of Different Rapid Maxillary Expansion Appliances on Airway by Acoustic Rhinometry
Evaluation of the Effect of Different Rapid Maxillary Expansion Appliances on Airway by Acoustic Rhinometry: A Randomized Clinical Trial
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Introduction: The aim of this 3-arm parallel trial was to compare the effects of tooth-borne (Hyrax), tooth tissue-borne (KBME) and bone-borne (MIDME) rapid maxillary expansion (RME) appliances on nasal airway with acoustic rhinometry (AR).
Methods: Fourty-six 12- to 14-years-old patients with narrow maxilla were randomly allocated into 3 study groups according to the type of RME appliance: tooth-borne, tooth tissue-borne and bone-borne. Participants were recruited from the Department of Orthodontics, Faculty of Dentistry, Izmir Katip Celebi University, Turkey. During the RME treatment, the same protocol was applied to all patients and the expansion screws were activated twice a day (0.4 mm/day). Computer-generated randomization was used with group allocation concealed using opaque, sealed envelopes. The outcome assessor was blinded; however, it was not feasible to blind either operator or patients. The primary outcome of this study was the correction of posterior crossbite. Secondary outcomes included AR assessment of nasal airway dimensions as nasal volume, the minimal cross-sectional area (MCA) 1 and 2. AR measurements were obtained before treatment (T0), after active expansion (T1), and at 3 months-follow-up (T2). One-way analysis of variance (ANOVA) and a Bonferroni test was used for inter-group comparison and two-way ANOVA was used for intra-group evalaution.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- no previous tonsillar, nasal or adenoid surgery and orthodontic treatment,
- Bilateral crossbite and need for RME,
- maxillary and mandibular permanent teeth fully erupted,
- willingness to participate in the study
Exclusion Criteria:
- the presence of adenotonsillectomy due to tonsillar hypertrophy or adenoidal hypertrophy
- having nasal/nasopharyngeal /oropharyngeal pathologies, craniofacial syndromes, systemic disease, poor oral hygiene,
- history of previous orthodontic treatment.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Tooth-borne (Hyrax) expander
|
The patients were treated with KBME, Hyrax and MIDME maxillary expansion appliances, respectively.
All expansion appliances containing a Hyrax expansion screw positioned parallel to the second premolars and were used to correct the posterior crossbite.
In the MIDME group, two mini-screws with a diameter of 1.6 mm and a length of 10 mm are located on the right and left sides between the roots of the 2nd premolar and 1st molar teeth with 60-70° angle.
KBME and Hyrax expansion appliances were cemented with glass ionomer cement and MIDME was cemented with using the light-cured composite.
Same protocol was applied to all patients during RME treatment.
Expansion screws in all groups were activated by two turns a day.
|
Experimental: Tooth tissue-borne (KBME) expander
|
The patients were treated with KBME, Hyrax and MIDME maxillary expansion appliances, respectively.
All expansion appliances containing a Hyrax expansion screw positioned parallel to the second premolars and were used to correct the posterior crossbite.
In the MIDME group, two mini-screws with a diameter of 1.6 mm and a length of 10 mm are located on the right and left sides between the roots of the 2nd premolar and 1st molar teeth with 60-70° angle.
KBME and Hyrax expansion appliances were cemented with glass ionomer cement and MIDME was cemented with using the light-cured composite.
Same protocol was applied to all patients during RME treatment.
Expansion screws in all groups were activated by two turns a day.
|
Experimental: Bone-borne (MIDME) expander
|
The patients were treated with KBME, Hyrax and MIDME maxillary expansion appliances, respectively.
All expansion appliances containing a Hyrax expansion screw positioned parallel to the second premolars and were used to correct the posterior crossbite.
In the MIDME group, two mini-screws with a diameter of 1.6 mm and a length of 10 mm are located on the right and left sides between the roots of the 2nd premolar and 1st molar teeth with 60-70° angle.
KBME and Hyrax expansion appliances were cemented with glass ionomer cement and MIDME was cemented with using the light-cured composite.
Same protocol was applied to all patients during RME treatment.
Expansion screws in all groups were activated by two turns a day.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Correction of posterior crossbite
Time Frame: After active expansion (up to 3 weeks) (T1).
|
The palatal cusps of the maxillary posterior teeth approximated the lingual cusps of the mandibular posterior teeth.
|
After active expansion (up to 3 weeks) (T1).
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Increasing nasal cavity area-1
Time Frame: At baseline (T0), after active expansion (up to 3 weeks) (T1) and after 3 months retention period (T2)
|
Increasing Minimum cross-sectional area1 (MCA1)
|
At baseline (T0), after active expansion (up to 3 weeks) (T1) and after 3 months retention period (T2)
|
Increasing nasal cavity area-2
Time Frame: At baseline (T0), after active expansion (up to 3 weeks) (T1) and after 3 months retention period (T2)
|
Minimum cross-sectional area2 (MCA2)
|
At baseline (T0), after active expansion (up to 3 weeks) (T1) and after 3 months retention period (T2)
|
Increasing nasal cavity volume
Time Frame: At baseline (T0), after active expansion (up to 3 weeks) (T1) and after 3 months retention period (T2)
|
Volume (Vol)
|
At baseline (T0), after active expansion (up to 3 weeks) (T1) and after 3 months retention period (T2)
|
Collaborators and Investigators
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- TDR-SABE-0024
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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