At a glance
ClinicalIndex Comparison RecordStandardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.
Vacuum-formed Retainer Versus Bonded Retainer to Prevent Relapse After Orthodontic Treatment - A Randomized Controlled Trial About Stability and Patients' Perceptions
In Brief
A clinical study evaluating CTC retainer, Essix retainer maxilla, and 3 other interventions for Orthodontics and Retention. Completed, enrolled 104 participants.
Detailed Summary
The purpose of this trial is to evaluate and compare stability after orthodontic treatment with an Essix retainer and a bonded cuspid-to-cuspid retainer (CTC), respectively in the mandibular arch and longitudinally follow these patients over time up to 5 years. The patients' perceptions of the two methods are also evaluated with questionnaires during the follow-up period. A further aim of this study is to analyze the relationship between diagnosis, treatment outcome, treatment time, age at start of treatment and stability with an Essix retainer in the maxilla. The null hypotheses are: * that there is no difference in retention capacity between Essix retainer and cuspid-to-cuspid retainer * that there is no difference in patients' perception between Essix retainer and cuspid-to-cuspid retainer * that there is no difference in retention capacity for Essix retainer in the maxilla concerning diagnosis before treatment, treatment outcomes, treatment time and age at start of treatment
Study Details
Timeline
Interventions
The CTC retainer consists of 0.8 hard Remanium® wire (Dentaurum, Germany) and is bonded with Tetric Flow (Ivoclar Vivadent, Liechtenstein) to the lower canines directly after debonding.
The Essix retainer is made of 1 mm Essix C+® Plastic (Dentsply, USA) and is handed out to the patient the same day after removal of fixed appliances.
The Essix retainer is made of 1 mm Essix C+® Plastic (Dentsply, USA) and is handed out to the patient the same day after removal of fixed appliances.
Alginate impressions are taken to made the cuspid-to-cuspid and Essix retainers, respectively. Dental casts are obtained at the debond appointment and at the follow-up visits after 6, 18 and 60 months.
A questionnaire is completed at the follow-up visits.