Can Clear Orthodontic Retainers be Used for Tooth Whitening?
Not Applicable
Completed
- Conditions
- orthodonticsTeeth discolourationOral and Gastrointestinal - Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon
- Registration Number
- ACTRN12622000644763
- Lead Sponsor
- niversity of Otago
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- All
- Target Recruitment
- 30
Inclusion Criteria
Subjects who have finished active orthodontic treatment with twelve vital anterior teeth from canine to canine with no direct or indirect restorations, no need for attachments or divots on the labial surfaces of the maxillary canines or incisors, no history of dentine hypersensitivity and no history of tooth whitening during the previous three years. If the patient is less than 16 years old, consent will be required from the parents/guardian.
Exclusion Criteria
Subjects who are smokers, pregnant or breastfeeding, have active caries or periodontal disease, have severe fluorosis or tetracycline staining, or with known allergic reactions to whitening materials.
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Biomechanical property change in the orthodontic clear retainers including compressive strength, tensile and surface roughness analysis. A universal mechanical testing instrument (Instron Co., Canton, MA, USA) will be used. [4 weeks after intervention commencement]
- Secondary Outcome Measures
Name Time Method Tooth position will be assessed by superimposing two digital scans with specialised computer software. [4 weeks after intervention commencement];Tooth colour will be assessed by using VitaPan tooth shade guide as well as a digital VitaEasyshade device under standard room lighting. [2 weeks and 4 weeks after intervention commencement]