Clinical trials: Orthodontic Retainer
Orthodontics, Retention
Vacuum-formed Retainer Versus Bonded Retainer to Prevent Relapse After Orthodontic Treatment
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…
- Trial name
- NCT03070444
- Testing
- CTC retainer, Essix retainer maxilla, Essix retainer mandible
- Volunteers
- 104 people, healthy volunteers welcome
- Sponsor
- Region Gävleborg
Orthodontic Retention Compliance
Compliance After Orthodontic Treatment Using Thermoplastic or Hawley Retainers
This study aims to assess adolescent's compliance after the end of orthodontic treatment using either thermoplastic or Hawley retainers in the upper arch, with the aid of TheraMon microsensor (MC Technology GmbH).
- Trial name
- OrthoComply (NCT03683862)
- Testing
- orthodontic appliance
- Where
- Greece
- Volunteers
- 77 people, healthy volunteers welcome
- Sponsor
- University of Athens
Dental Malocclusion, Stability
Retention With Three Different Bonded Retainers a Multicenter, Randomized Controlled Trial With 5-year Follow-up
One of major challenges in orthodontics is to inhibit relapse and ensure stability of treatment outcomes. Retention is the phase of orthodontic treatment that attempts to keep teeth in the corrected position after correction with…
- Trial name
- NCT04828096
- Testing
- Orthodontic retention
- Where
- 2 sites in Spain, Sweden
- Volunteers
- 324 people, healthy volunteers welcome
- Sponsor
- Region Örebro County
Orthodontic Relapse, Retention in Orthodontic
Effectiveness, Patient Acceptance, and Cost Estimation of 3D-printed Retainer Compared to Hawley Retainer in Expansion Case: a Randomized Controlled Trial
Expansion of the arches is generally considered highly unstable and prone to relapse regardless of the type of expansion. Retention appliances play a vital role in preserving these changes.
- Trial name
- NCT07659041
- Testing
- 3D printed retainer, Hawley retainer
- Where
- 3 sites in Malaysia
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- National University of Malaysia
Orthodontic Treatment
Comparison of Periodontal Health, Bonding Time and Failure Between Direct and Indirect Fixed Retainer Placement Among Orthodontic Patients
The placement technique of retainers in both maxillary and mandibular arches can influence the time taken for bonding the retainer in the mouth of a patient which can in turn affect the patient´s response to the procedure.
- Trial name
- NCT07107100
- Testing
- a silicon jig/key is used to place/bond fixed retainer on teeth
- Where
- Pakistan
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Aga Khan University Hospital, Pakistan
Orthodontic Appliance Complication
Microbial Colonisation On Vacuum-Formed Retainers Constructed On Conventional Models And Three Dimensional (3D) Reconstructed Models
Vacuum-formed retainers are clear or transparent retainers, that hold the teeth in the new position after active orthodontic treatment.
- Trial name
- NCT03844425
- Testing
- Conventional VFR, VFR from SLA, VFR from FDM
- Where
- Malaysia
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Malaya
Retention
Effectiveness of PEEK Fixed Retainer
A randomized clinical trial is set out to compare the effectiveness of two types of fixed retainer (multistranded stainless steel and PEEK types) in maintaining the stability of lower anterior teeth with less failure rate.
- Trial name
- RCT (NCT05557136)
- Testing
- Multistranded stainless steel fixed retainer, Polyether-Ether-Ketone (PEEK) fixed retainer
- Where
- Iraq
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Esraa Salman Jasim
Health of Periodontium
Comparison of the Effect of Two Types of Fixed Retainers on the Health of the Gums
Different types of retainers have been used to assure the stability of orthodontic treatment. The aim of this study is clinical and radiographic comparison and evaluation of two common types of lingual fixed retainers on the…
- Trial name
- NCT01314729
- Testing
- Fiber-reinforced-composite retainer, Composite-wire retainer
- Where
- Iran
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Shiraz University of Medical Sciences
Survival, Prosthesis
Clinical Assessment of All Ceramic Single-retainer Using Upper Canine as Abutment With Minimum Preparation on the Lingual Surface, to Replace the Upper Lateral Incisor and Will be Compared With the All Ceramic Single-retainer Using Upper Central Incisor.
The Intervention Will be All Ceramic Single-retainer Resin Bonded Fixed Partial Denture Using the Upper Canine as Abutment With Minimum Preparation on the Lingual Surface Within the Enamel Providing Maximum Area for the Retainer…
- Trial name
- NCT05812066
- Testing
- all ceramic single-retainer resin bonded fixed partial denture
- Where
- Egypt
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Cairo University
Dental and Occlusal Stability
Essix Retainer vs Hawley Retainer
There are several factors involved in the decision and the retention plan, such as occlusion, patient age, etiology of malocclusion, the speed of the correction, the length of the cusps and health of the tissues involved…
- Trial name
- retainer (NCT01583933)
- Testing
- Essix retainer, Hawley retainer
- Where
- Colombia
- Volunteers
- 46 people
- Sponsor
- CES University
Periodontal Inflammation
The Periodontal Status and Failure Rates With Different Retainer Bonding Techniques Using One-step Adhesive
The aim of this study was to evaluate fixed retainers, bonded with either direct or indirect techniques using one- or two-step adhesives, in terms of periodontal status and failure rates.
- Trial name
- NCT05458583
- Testing
- Baseline periodontal measurements (T0), Periodontal measurements (T1), Periodontal measurements (T2)
- Where
- Turkey (Türkiye)
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Pamukkale University
Relapse
CAD/CAM Fixed Retainers vs. Conventional Multistranded Fixed Retainers in Orthodontic Patients. Comparison of Stability, Retainer Failure Rate, Adverse Effects, Cost-effectiveness, and Patient Satisfaction. A Randomized Controlled Clinical Trial
Introduction: Orthodontic retainers are used after the completion of orthodontic treatment to assure dental occlusal stability and to maintain the achieved end-result.
- Trial name
- Retention (NCT04389879)
- Testing
- Bonding of either CAD/CAM or conventional multistranded stainless steel fixed retainer
- Where
- 2 sites in Denmark, Norway
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
Orthodontic Appliance Complication, Orthodontic Appliance Design
Periodontal and Orthodontic Outcomes of Straight vs. Looped Fixed Retainers
The goal of this split-mouth, head-to-head, randomized controlled trial is to compare the effects of a fixed straight retainer with the V- loop bonded retainer on periodontal health in patients with the requirement of continuous…
- Conditions
- Orthodontic Appliance Complication, Orthodontic Appliance Design, Orthodontic Treatment
- Trial name
- NCT05644119
- Testing
- V- loop Bonded Orthodontic Retainer, Straight Wire Retainer
- Where
- Saudi Arabia
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- King Abdulaziz University
Orthodontic Relapse
Efficacy and Cost-effectiveness of Orthodontic Retention Protocols
Objective is to assess changes of dentition and periodontium, and hygiene in retention after the end of the active phase of orthodontic treatment, and relationship with gender, type of retention appliance, pre-therapeutic…
- Trial name
- orthoretenti (NCT05121220)
- Testing
- fixed retainer, removable retainer
- Where
- Croatia
- Volunteers
- 152 people, healthy volunteers welcome
- Sponsor
- Poliklinika Orthonova
Orthodontic Retainers
Biological Reaction of Direct 3d Printed Retainers
The aim of this study will be to evaluate the biological reaction of direct three dimensional printed retainers. Primary objective is to evaluate bacterial growth and color stability between different thicknesses of 3d printed…
- Trial name
- NCT07098325
- Testing
- retainer with .5 mm thickness, retainer with 1 mm thickness
- Where
- Egypt
- Volunteers
- 26 people
- Sponsor
- Al-Azhar University
Orthodontic Retention
Eight Units Extended Maxillary Fixed Retainer
Assessment of dental changes associated with an eight-unit extended maxillary fixed retainer in 3D. monitoring PDL response and evaluation of patient's satisfaction ,quality of life and speech with extended maxillary fixed…
- Trial name
- Extended FR (NCT05889884)
- Testing
- Extended maxillary fixed retainer
- Where
- Egypt
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Alexandria University
Bond, Pair
Comparison of Perforated 3D Printed Versus Conventional Metal Fixed Bonded Retainer
Although different materials of mandibular fixed retainer were discussed in the literature, there is contradicting evidence regarding the bond failure of Titanium fixed metal retainer, whether immediate or after 12 months.
- Trial name
- NCT06851897
- Testing
- perforated 3D printed metal fixed retainer, conventional fixed retainer
- Where
- Egypt
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Mariam Alaa
Fixed Orthodontic Retainer
Ultrasonographic Evaluation of Periodontal Effects of Fixed Retainers
This prospective clinical study aims to evaluate the effects of fixed lingual retainers placed after orthodontic treatment on periodontal soft and hard tissue parameters using ultrasonographic imaging.
- Trial name
- NCT07414264
- Where
- Turkey (Türkiye)
- Volunteers
- 53 people
- Sponsor
- Selcuk University
Retention
The Clinical Evaluation of Two Different Film Thicknesses of Clear Overlay Retainer.
The aims of this study were to compare health related quality of life, comforts degrees，retention effectiveness, and failure rates as well as survival times between two clear overlay retainers with different thicknesses, thus to…
- Trial name
- NCT02618330
- Testing
- retainer
- Volunteers
- 80 people
- Sponsor
- Yafen Zhu
Tooth Stability, Periodontal Health
Clinical Effectiveness of Cobalt Chromium CAD-CAM Designed Customized Lingual Retainer
This study aims to evaluate the clinical effectiveness of CAD/CAM 3D printed Chrome Cobalt fixed retainer in maintaining mandibular anterior teeth stability.
- Conditions
- Tooth Stability, Periodontal Health, Patient Satisfaction
- Trial name
- NCT06837168
- Testing
- Stainless steel fixed retainer, 3D printed CAD/CAM Chrome cobalt fixed lingual retainers
- Where
- Iraq
- Volunteers
- 42 people
- Sponsor
- University of Baghdad