Clinical Trials Logo

Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT06199674
Other study ID # PBMRR-HKU-143
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date January 20, 2024
Est. completion date December 1, 2027

Study information

Verified date May 2024
Source The University of Hong Kong
Contact Zhiyi Shan
Phone 852-28590451
Email shanzhiy@hku.hk
Is FDA regulated No
Health authority
Study type Interventional

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.


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.


Recruitment information / eligibility

Status Recruiting
Enrollment 50
Est. completion date December 1, 2027
Est. primary completion date June 1, 2027
Accepts healthy volunteers No
Gender All
Age group 18 Years to 35 Years
Eligibility Inclusion Criteria: 1. Patients aged between 18 and 35 years old with permanent dentition 2. Patients who undertake orthodontic treatment using fixed appliances 3. Patients who require extraction of premolars in either their upper or lower dental arch 4. Patients who have fair oral hygiene habits 5. Patients who are systemically healthy Exclusion Criteria: 1. Patients with generalized dental caries and severe chronic periodontitis in stages III and IV 2. Patients with congenital or severe craniofacial anomalies which necessitate orthognathic surgery 3. Patients with physical or mental impairment, and those who smoke or undertake systemic medications 4. Patients with current root resorption at any of the teeth 5. Patients with endodontic treatment and/or large restorations on premolars to be extracted

Study Design


Related Conditions & MeSH terms


Intervention

Device:
photobiomodulation therapy
Patients in the PBM group will be delivered a portable PBM device (PBM Healing Ortho) at the beginning of orthodontic treatment and will be instructed to use it daily at home for 8 minutes (4 min per arch) after tooth brushing.
Other:
orthodontic fixed-appliance
All eligible patients will receive orthodontic treatment with a pre-adjusted fixed appliance (0.022'' × 0.028'' slot system, MBT, 3M Unitek) provided by the same practitioner. At the start of treatment, a cantilever auxiliary arch bent with a 0.017'' × 0.025'' Stainless Steel wire (3M Unitek) will be used to apply a 100 g intrusion force to the premolars that will be extracted in 3 months. All other teeth will undergo regular orthodontic treatment with a standard archwire protocol (0.014'' NiTi, 0.016'' NiTi, 0.018'' NiTi, 0.017'' × 0.025'' NiTi, 0.019'' × 0.025'' NiTi, and 0.019'' × 0.025'' SS, 0.019'' × 0.025'' TMA) for alignment, leveling, space closure, detailing, and finishing. For en masse retraction, a 150 g force will be applied by coil springs, allowing bracket slots to slide along the 0.019'' × 0.025'' SS.

Locations

Country Name City State
Hong Kong The University of Hong Kong Hong Kong

Sponsors (1)

Lead Sponsor Collaborator
The University of Hong Kong

Country where clinical trial is conducted

Hong Kong, 

Outcome

Type Measure Description Time frame Safety issue
Primary Orthodontic-induced inflammatory root resorption (OIIRR) Record OIIRR by calculating the volume of craters on the root surfaces of the extracted tooth using a standard micro-CT machine after 3 months following intrusions by cantilever auxiliary arch. baseline, 3 months after intrusive force loading
Secondary Orthodontic pain Record orthodontic pain monthly since the beginning of regular orthodontic treatment by patients' self-registration on a 100-millimetre Visual Analogue Scale (VAS). 0 means "no pain", 100 means "worst pain", the higher the score, the more severe the pain. In addition, 5-millilitre unstimulated saliva samples will be collected from each participant with the same time scheme for evaluation of pain-related biomarkers. baseline, immediately after fixed appliance placement and immediately after adjustment every month during the first year of regular orthodontic treatment
Secondary Space closure by en masse retraction Record the duration of the space closure by calculating the rate of tooth movement (mm/mo) with physically measurement. In addition, gingival crevicular fluid samples will be collected from the two space-neighbouring teeth to analyse bone-related biomarkers. every month from the start of space closure to the end of closure, taking into account the very slow closure of space, assessed up to 12 months
Secondary Microbiome profile in dental plaques Samples of supragingival and subgingival plaques will proceed to 16S rRNA sequencing for analysis of microbiome profiles, and q-PCR for evaluating bacterial loads of some critical pathogens for dental caries and periodontitis. baseline, every 3 months from the start of regular orthodontic treatment to the end of treatment process
See also
  Status Clinical Trial Phase
Active, not recruiting NCT02918240 - How Often Should We See Our Orthodontic Patients N/A
Recruiting NCT04105491 - Patient's Expectations, Preferences, Experiences Before, During and After the Treatment With Invisalign® Aligners
Active, not recruiting NCT03967002 - Treatment of the Mandibular Dental Crowding With and Without Corticotomy Surgery N/A
Completed NCT02796911 - Comparative Study of Different Bone Grafts in Accelerating Tooth Movement N/A
Recruiting NCT05650359 - Study of the Use of Orthopulse Photobiomodulation N/A
Completed NCT03765151 - The Effectiveness of Low-level Laser Therapy in Orthodontic Retention for Periodontal-compromised Patients N/A
Completed NCT02901678 - The Effect of Different Force Magnitudes on Maxillary Posterior Segment Intrusion N/A
Not yet recruiting NCT01475773 - Psychological Assessment of Adults Seeking Orthodontic Treatment N/A
Completed NCT03070444 - Vacuum-formed Retainer Versus Bonded Retainer to Prevent Relapse After Orthodontic Treatment N/A
Enrolling by invitation NCT05814991 - A Cohort Prospective Study of Predictors Influencing the Quality of Visualization of the Operating Field During Orthognathic Surgery
Completed NCT03924726 - Osseous Evidence Behind Micro-osteoperforation in Accelerating Tooth Movement. N/A
Recruiting NCT06380790 - Effect of Laser-aided Csf on the Rate of Leveling and Alignment of Mandibular Anterior Crowding N/A
Active, not recruiting NCT00871026 - Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) - Based Planning and Creation of Orthodontic Appliances N/A
Completed NCT05562986 - Impacts of Oral Irrigation in Orthodontic Patients N/A
Recruiting NCT06167278 - Indirect Bonding Accuracy of 3D Printed Digital Transfer Trays N/A
Completed NCT03421886 - Assessment of the Efficacy of the Aerodentis System N/A
Completed NCT03714087 - Occlusal Outcomes by OGS After a Finishing Protocol N/A
Withdrawn NCT03332082 - A Commercial Available Tooth Positioner for the Treatment of Simple Orthodontic Relapse N/A
Completed NCT01246830 - The Use of 2D and 3D Imaging Modalities and Its Influence on Diagnosis and Treatment Planning in Orthodontics N/A
Active, not recruiting NCT00871091 - Study Investigating Tooth Movements With Conventional and Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) Supported Fixed Appliances N/A