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The Effectiveness of Low-level Laser Therapy in Orthodontic Retention for Periodontal-compromised Patients

NCT03765151 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 35

Last updated 2021-04-29

No results posted yet for this study

Summary

The aim of the study is to evaluate the effects of low-level laser therapy (LLLT) on patients with chronic periodontitis during a post-orthodontic period for 12 months. Following aspects will be assessed: 1. Effects on tooth stability maintenance and bone remodeling. 2. Effects on periodontal inflammation status. 3. Effects on cervical dentin sensitivity and quality of life. The study design is a randomised controlled trail. To eliminate any bias, the investigator will initially hypothesis there is no significant difference in the aforementioned aspects between teeth retained with an adjunctive LLLT strategy and those retained in a conventional regimen.

Conditions

  • Orthodontics
  • Periodontal Diseases

Interventions

DEVICE

low-level laser therapy

LLLT will be performed by a diode gallium-aluminum-arsenide (Ga-Al-As) laser with a 940-nm wavelength (Ezlase; Biolase Technology Inc., Irvine, CA) and delivered by a quadrant-sized probe which cover the region from the central incisor to the first molar on the test side. The laser probe will be 1 cm from the soft tissue around the test tooth at the gingival margin and alveolar mucosa covering the root area using a setting of 800 milliwatt in a continuous wave. Each tooth will receive 30 seconds of exposure, with no more than 8.6 J/cm2 of energy delivered. In addition, a spot-size laser probe will be applied for 30 seconds 5 mm from the cervical dentin with an output power of 700 milliwatt to reduce tooth sensitivity.

OTHER

orthodontic retention

All participants included will wear fixed lingual retainer and removable retainers in the post-orthodontic retention period and their previous orthodontic treatment will be carried out by one operator using preadjusted appliances with bonded 0.022×0.028-inch2 brackets/buccal tubes and 0.014-inch Nickel Titanium (NiTi) archwires as the first archwires.

Sponsors & Collaborators

  • The University of Hong Kong

    lead OTHER

Principal Investigators

  • Yanqi Yang · The Prince Philip Dental Hospital

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
CROSSOVER

Eligibility

Min Age
25 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-10-01
Primary Completion
2020-06-01
Completion
2020-12-01

Countries

  • Hong Kong

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03765151 on ClinicalTrials.gov