Retention
Conditions
Brief summary
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 provide basis information regarding appropriate selections of the thickness of clear overlay retainers.
Interventions
DEVICEretainer
24 h wearing whether 0.75-mm-thick or 1.00-mm-thick film retainer
Sponsors
Yafen Zhu
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
12 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Patients after active orthodontic treatment; * Must be healthy without systemic and oral diseases; * The central incisors, canines and first molars of both upper and lower arches must be existed; * Agreed to the trial and signed informed consent forms, either by themselves, or their parents.
Exclusion criteria
* Oral habits such as bruxism and clenching, * Do not accept this type of retainers
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Survival times via recording to the patients' re-visit | one year |
Secondary
| Measure | Time frame |
|---|---|
| SF-36 scale for Quality of life | one month |
| Comfort degrees assessed through Visual Analog Score | one month |
| Retention effectiveness assessed according to 3D models | one year |
Outcome results
None listed