NCT04529213

Brief Summary

Rapid maxillary expansion (RME) is a commonly used orthodontic treatment in patients with maxillary constriction to provide skeletal expansion, correct posterior crossbite and resolve naso-respiratory problems by reducing oral respiration.The aim of this randomized controlled trial was to evaluate the effects of tooth-borne, tooth tissue-borne and bone-borne RME appliances on sleep quality with polygraphy. The null hypothesis was that there is no difference for the sleep quality between the appliances.

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
46

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Jul 2016

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

July 1, 2016

Completed
7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 13, 2017

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

May 17, 2017

Completed
3.3 years until next milestone

First Submitted

Initial submission to the registry

August 24, 2020

Completed
3 days until next milestone

First Posted

Study publicly available on registry

August 27, 2020

Completed
Last Updated

August 27, 2020

Status Verified

August 1, 2020

Enrollment Period

7 months

First QC Date

August 24, 2020

Last Update Submit

August 24, 2020

Conditions

Keywords

PolygraphyObstructive Sleep ApneaRapid Maxillary Expansion

Outcome Measures

Primary Outcomes (1)

  • Correction of posterior crossbite

    The palatal cusps of the maxillary posterior teeth approximated the lingual cusps of the mandibular posterior teeth.

    After active expansion (up to 3 weeks). The evaluation of the result has been made by the physician with intraoral clinical examination.

Secondary Outcomes (7)

  • Polygraphic assessment of sleep parameters

    After 3 months treatment retention period

  • Polygraphic assessment of sleep parameters

    After 3 months treatment retention period

  • Polygraphic assessment of sleep parameters

    After 3 months treatment retention period

  • Polygraphic assessment of sleep parameters

    After 3 months treatment retention period

  • Polygraphic assessment of sleep parameters

    After 3 months treatment retention period

  • +2 more secondary outcomes

Study Arms (3)

Tooth tissue-borne (KBME) expander

EXPERIMENTAL

In this tooth tissue-borne appliance, the occlusal surfaces of the molar and premolar teeth and half of the palatinal and buccal surfaces are covered with heat polymerized acrylic. Hyrax expansion screw is in the midline, as far as possible to the palate positioned close and parallel

Procedure: Rapid Maxillary Expansion Treatment

Tooth-borne (Hyrax) expander

EXPERIMENTAL

In this tooth-borne expansion appliance, orthodontic bands are placed on the right and left 1st premolar and 1st molar teeth of the patients and the bands are soldered to the Hyrax expansion screw. The expansion screw is in the midline, as far as possible to the palate positioned close and parallel

Procedure: Rapid Maxillary Expansion Treatment

Bone-borne (MIDME) expander

EXPERIMENTAL

This bone-borne expander includes 2 mini-screws with a diameter of 1.6 mm and a length of 10 mm on the right and left sides, coinciding between the roots of the 2nd premolar and 1st molar teeth in addition to the hyrax expansion screw.

Procedure: Rapid Maxillary Expansion Treatment

Interventions

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.

Bone-borne (MIDME) expanderTooth tissue-borne (KBME) expanderTooth-borne (Hyrax) expander

Eligibility Criteria

Age12 Years - 14 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17)

You may qualify if:

  • 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

You may not qualify if:

  • 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.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Sleep Apnea SyndromesSleep Apnea, Obstructive

Condition Hierarchy (Ancestors)

ApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System Diseases

Study Officials

  • Gökçenur Gökçe, Phd

    Izmir Katip Celebi University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: 3-arm parallel trial
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant professor

Study Record Dates

First Submitted

August 24, 2020

First Posted

August 27, 2020

Study Start

July 1, 2016

Primary Completion

January 13, 2017

Study Completion

May 17, 2017

Last Updated

August 27, 2020

Record last verified: 2020-08