Orthodontic Archwire Effectiveness Trial (ArchWireRaCE)

University of Dundee

Status

Completed

Conditions

Malocclusion

Treatments

Device: Orthodontic archwire

Study type

Interventional

Funder types

Other

Industry

Identifiers

NCT02659813

2015DE11

Details and patient eligibility

About

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.

Full description

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).

Enrollment

64 patients

Sex

All

Ages

12+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

12 years of age or older
Class 1 Incisor relationship (British Standards Institute Classification)
Labial segment crowding in upper and / or lower arch >4mm
Little's Irregularity Index in upper and / or lower arch >4mm
Eligible for NHS orthodontic treatment
Planned non-extraction upper and lower fixed appliance orthodontic treatment

Exclusion criteria

Previous fixed appliance orthodontic treatment
Previous functional appliance treatment
Planned use of fixed auxiliary appliances (e.g. quadhelix, Trans Palatal Arch)
Cleft lip and palate or other craniofacial anomalies
Hypodontia (excluding third molars), or missing teeth due to previous extraction
Abnormal root morphology on pre-treatment radiographs
Confirmed history of nickel allergy
A medical history resulting in them taking analgesics for a chronic condition
Limited mouth opening or other contra-indication to intra-oral scanning