Effects of PBM on Fixed-appliance Orthodontic Patients

Status Recruiting

Clinical Trial Summary

The aim of this study is to investigate the effects of photobiomodulation therapy (PBM) on the dental and periodontal health of patients undergoing fixed-appliance orthodontic treatment, including orthodontically induced root resorption, orthodontic pain, space closing rate, and dental microbiome profile in dental plaques.

Clinical Trial Description

Photobiomodulation therapy (PBM) is a non-invasive, adjunctive medical treatment that has promising effects on various dental and oral conditions, including controlling inflammation, promoting wound healing, and relieving pain. While animal studies have explored PBM therapy in orthodontics for accelerating tooth movement, preventing root resorption, alleviating pain, and controlling periodontal inflammation, clinical studies with high-quality evidence remain limited. Therefore, a randomized controlled trial (RCT) will be conducted to investigate the effects of a portable PBM device on the dental and periodontal health of patients undergoing fixed-appliance orthodontic treatment. This two-arm RCT will be conducted with a triple-blinded and parallel study design in a 1:1 ratio. Fifty orthodontic patients will be recruited at the Prince Philip Dental Hospital following the eligibility criteria from Jan. 2024 to Jan. 2026 (24 months) and evenly distributed to the two arms. Randomization and allocation will be conducted by a statistician who will not participate in the intervention and outcome assessment process using computer software. Participants in the PBM group will be required to wear a PBM device, while those in the control group will receive a sham device with an identical appearance to the PBM device but without light irradiation. All participants must wear their assigned device daily for 8 minutes (4 minutes for the upper and lower dental arches each) after brushing their teeth during the process of fixed-appliance orthodontic treatment. The allocation sequences will be concealed in a batch of opaque envelopes. Patients and the outcome assessor will be blinded to the allocation sequence. This protocol is proposed in compliance with the Declaration of Helsinki and the ICH-Good Clinical Practice (GCP) Guideline. The study will be conducted and reported according to the Consolidated Standards of Reporting Trials (CONSORT) guideline. Written consent will be obtained from all subjects. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT06199674
Study type	Interventional
Source	The University of Hong Kong
Contact	Zhiyi Shan
Phone	852-28590451
Email	shanzhiy@hku.hk
Status	Recruiting
Phase	N/A
Start date	January 10, 2024
Completion date	December 1, 2027

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