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| Name | Class |
|---|---|
| Ormco Corporation | INDUSTRY |
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This study protocol is for a randomised clinical trial which aims to test two materials used as orthodontic archwire to compare FireWire archwires to Copper Nickel Titanium (CNiTi) archwires. Both professional and patient related outcome measures are to be used to fully evaluate performance.
This is a randomised clinical trial of Firewire and CNiTi as orthodontic aligning archwires. A two group single blind parallel multicentre study design in a National Health Service primary care setting in England will be used.
Patients will be recruited from those attending the practices for orthodontic treatment that meet the inclusion and exclusion criteria. Online randomisation will allocate to one of the two groups, stratified by centre and age group (adolescent / adult).
Sample size calculation indicates a total sample size of 42, but allowing for dropouts and missing data the investigators will recruit 64, 32 to each group.
Patients will be treated according to a strict clinical protocol including customised Damon Q fixed appliances and defined archwire sequence. Participants will be seen at initial 5 week intervals for data collection after new archwire placement, and otherwise at routine 10 week intervals.
Primary outcome data (rate of alignment) will be collected over the initial 10 weeks and secondary outcomes over the duration of the treatment (18 months approx).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Firewire | Experimental | Experimental Group 1. Novel orthodontic archwire. |
|
| CNiTi | Experimental | Experimental Group 2. Current best available orthodontic archwire |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Orthodontic archwire | Device | Archwire used to align teeth in an orthodontic fixed brace |
|
| Measure | Description | Time Frame |
|---|---|---|
| Rate of tooth movement | Rate teeth move in response to force from archwire measured in millimetres on digital dental models | Initial six months of treatment |
| Measure | Description | Time Frame |
|---|---|---|
| Pain assessed by Visual Analogue Scale | Visual Analogue Scale pain score after archwire placed | Initial six months of treatment |
| Tooth Root Resorption assessed on panoramic radiograph using method of Pandis et al (2008) |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| David R Bearn, BDS, PhD | University of Dundee | Principal Investigator |
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 18984396 | Background | Pandis N, Nasika M, Polychronopoulou A, Eliades T. External apical root resorption in patients treated with conventional and self-ligating brackets. Am J Orthod Dentofacial Orthop. 2008 Nov;134(5):646-51. doi: 10.1016/j.ajodo.2007.01.032. |
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| ID | Term |
|---|---|
| D008310 | Malocclusion |
| ID | Term |
|---|---|
| D014076 | Tooth Diseases |
| D009057 | Stomatognathic Diseases |
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Damage to tooth root during tooth movement
| 18 months |
| Patient experience assessed by Questionnaire | Questionnaire of patient experiences of braces | Initial six months of treatment |