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Early Crossbite Correction - a Randomized Study

NCT03353766 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 80

Last updated 2017-11-27

No results posted yet for this study

Summary

The aim of this longitudinal randomized investigation is to determine the long-term effects of early lateral crossbite correction with Quad-Helix appliance, during the deciduous dentition, on craniofacial structures and dental arches, compared to treatment started later, after the first permanent molars have erupted.

The hypothesis is that the timing of treatment has significant effects on orthodontic treatment total time, the general outcome of the treatment, and the compliance of the patient.

The Age cohort of five-year-old of children living in the community areas of Oulunsalo are screened at the age of 5 years for malocclusions. Of these children 80 children who meet the criteria are chosen for the study after the written consent.

The children are randomized into two groups. In the first group the treatment with Quad-Helix appliance is started at the age of 5 to 6 years, before the eruption of the permanent molars. The device is cemented to the second deciduous molars. The treatment is continued and continued until normal lateral occlusion is achieved and the device is kept stable for one year after this.

In the second group headgear treatment is started after the first permanent maxillary molars have erupted. The device is cemented to the first permanent molars. The treatment is continued until normal lateral occlusion is achieved and the device is kept stable for one year after this.

In both groups dental casts, cephalograms, and standardized 3D facial photographs are taken before treatment (T0), after the first treatment phase (T1), after the second treatment phase (T2) and after the growth (T3).

Facial 3D scanning is performed for all the subjects after the treatment to find out the effect of different treatment methods on facial characteristics. The dental casts are scanned to make 3D models of the cast to be used in detailed analysis.

A wide multi-level questionnaire is performed before, during and after the study to the parents and the children to find out the comprehensive effects of orthodontic treatment on the well-being of the child. The questionnaire includes the Rutter's child behavioural pattern (Rutter et al., 2001).

In both studies, all the guidelines of RCT are applied. Blinding of the clinicians is gained, as the orthodontists or dentists treating the children are not aware of the rationale of the study. Blinding is applied on all measurement of the documents.

Conditions

  • Malocclusion
  • Crossbite

Interventions

DEVICE

Early crossbite correction with Q-H Device

Crossbite treatment in deciduous dentition with Quad-Helix appliance

Sponsors & Collaborators

  • Oulu University Hospital

    collaborator OTHER

  • University of Oulu

    lead OTHER

Principal Investigators

  • Anna-Sofia Silvola, Dr. · University of Oulu

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
5 Years
Max Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2016-04-30
Primary Completion
2021-12-31
Completion
2025-12-31

Countries

  • Finland

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03353766 on ClinicalTrials.gov