Does Double With Regular Monitoring Prevent Undesired Tooth Movement?

Overview

The goal of observational study is to learn about the stability of orthodontic treatment results in orthodontic patients during retention phase of treatment.

Full Title of Study: “Does Double (Fixed and Removable Orthodontic Retention) With Regular Monitoring Prevent Undesired Tooth Movement?”

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Prospective
  • Study Primary Completion Date: September 9, 2022

Detailed Description

The aim of the present study was to three-dimensionally analyze tooth movement in retention phase of treatment and wherever double effectively retention prevents it.

Interventions

  • Diagnostic Test: Intraoral scan
    • On the day of debonding, directly following retainer bonding, intraoral scans were performed (T0), using 3Shape Trios 4 (3Shape, Copenhagen, Denmark). The scans were repeated after a month. The patients were invited for repeating the scans after 1 (T1), 3 (T2) and 6 months (T3).

Arms, Groups and Cohorts

  • Study group
    • From all the patients meeting the inclusion criteria every third patients was randomly chosen and invited to participate in the study. Written informed consent was obtained from every participant. Thus 100 patients have agreed to participate. All fixed retainers (stainless steel braided rectangular wire) were bonded in both arches by the same experienced clinician, who subsequently made impression for thermally formed splints and delivered them on the day of debonding. The effect of each of the procedures was verified by two independent experienced clinicians. On the day of debonding, directly following retainer bonding, intraoral scans were performed (T0). The patients were invited for repeating the scans after 1 (T1), 3 (T2) and 6 months (T3). The displacements were assessed by superimposition of the scans. The patients were recommended to wear removable retainers 22h/day. They were instructed to immediately report a failure and to apply immediately to the office in case of failure.

Clinical Trial Outcome Measures

Primary Measures

  • Tooth displacement in mm
    • Time Frame: One month after debonding
    • Measurement obtained by comparing superimposed scans
  • Tooth displacement in mm
    • Time Frame: Three months after debonding
    • Measurement obtained by comparing superimposed scans
  • Tooth displacement in mm
    • Time Frame: Six months after debonding
    • Measurement obtained by comparing superimposed scans

Secondary Measures

  • Failure rate
    • Time Frame: Six months of observation
    • Registration wherever the retention failure occured
  • Compliance rate
    • Time Frame: Six months of observation
    • Registration of patients attending to scheduled visits

Participating in This Clinical Trial

Inclusion Criteria

  • Non-extraction treatment – No hypodontia – Normal occlusion after treatment (Class I occlusion), perfect alignment – Normal overjet and overbite – Double retention including fixed retainer bonded from canine to canine in both dental arches and thermally formed removable splint Exclusion Criteria:

  • Fixed orthodontic treatment in one dental arch – Extraction cases – Patient treated with orthognathic surgery – Imperfect treatment result due to treatment cessation on patients demand or health issues – Craniofacial disorders

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: 65 Years

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Pomeranian Medical University Szczecin
  • Collaborator
    • 3Shape Poland Sp.z.o.o.
  • Provider of Information About this Clinical Study
    • Sponsor

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