A comparison of LightForce vs conventional orthodontic brackets in initial lower arch alignment efficiency and discomfort: a randomised clinical trial
A comparison of LightForce vs conventional preadjusted brackets in initial mandibular alignment efficiency and discomfort: a randomised clinical trial in 11 to 21 year old patients
The University of Queensland
60 participants
Apr 10, 2025
Interventional
Conditions
Summary
The purpose of this trial is to compare the improvement of lower dental crowding and patient discomfort in the initial stages orthodontic treatment using conventional preadjusted orthodontic brackets (3M Victory and Clarity, MBT Prescription 022 slot) vs custom LightForce brackets (LightForce Orthodontics, Custom Prescription 022 slot). The primary outcome measured will be change in mandibular Little’s Irregularity Index (LII ) which assesses crowding over a set time period of 12 weeks. The null hypothesis is that there is no difference in the rate of change of lower incisor crowding in the first 12 weeks when using LightForce or conventional preadjusted brackets. The secondary outcomes will include time to reach the first rectangular nickel titanium (NiTi) archwire and evaluation of patient discomfort.
Eligibility
Inclusion Criteria3
- Fixed orthodontic treatment
- Permanent dentition
- Initial Little's Irregularity Index of 5mm or greater in the mandibular arch
Exclusion Criteria4
- Orthognathic surgery, impacted canines or premolars
- Taking medications or have conditions that may affect tooth movement
- With cleft palate or other syndromes
- With missing lower incisors or canines (either missing or extracted)
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Interventions
The use of LightForce (LightForce Orthodontics, .018 Slot with .022 Slot molar tubes) brackets for the entire duration of fixed orthodontic treatment. Duration of wear is 24 hours a day. The brackets will be administered by two registered orthodontists in a single private practive setting in Queensland. The brackets will be adjusted and checked every 8-12 weeks, and broken ones replaced, however patients may present earler as an emergency bracket reattachment appointment. Assessing adherence to the intervention is not critical as the brackets are firmly attached to the teeth.
Locations(1)
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ACTRN12624001211550