Does Double With Regular Monitoring Prevent Undesired Tooth Movement?

Completed

• Conditions: Malocclusion
• Interventions: Diagnostic Test: Intraoral scan

• Registration Number: NCT05626335
• Lead Sponsor: Pomeranian Medical University Szczecin

Brief Summary

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

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.

Study Timeline

• Study Start: 2021-01-01
• Primary Completion: 2022-09-09
• Study Completion: 2022-09-09
• Status Verified: 2022-10
• Study First Submitted: 2022-11-15
• Study First Submitted QC: 2022-11-15
• Last Update Submitted: 2022-11-15
• Study First Posted: 2022-11-23
• Last Update Posted: 2022-11-23

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 100

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

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Study group	Intraoral scan	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.

Primary Outcome Measures

Name	Time	Method
Tooth displacement in mm	Six months after debonding	Measurement obtained by comparing superimposed scans

Secondary Outcome Measures

Name	Time	Method
Failure rate	Six months of observation	Registration wherever the retention failure occured
Compliance rate	Six months of observation	Registration of patients attending to scheduled visits

Trial Locations

Locations (1)

Department of Interdisciplinary Dentistry, Pomeranian Medical Univeristy in Szczecin; 🇵🇱 Szczecin, Zachodniopomorskie, Poland