Periodontal Disease
Conditions
Keywords
malocclusion, low-level laser therapy
Brief summary
The aim of the study is to assess the effects of low-level laser therapy (LLLT) in patients with periodontitis during orthodontic-periodontal treatment for 12 months on the following aspects: (1) Effects on periodontal status; (2) Effects on alveolar bone remodeling; (3) Effects on cervical dentin sensitivity; (4) Effects on pain and quality of life. To eliminate any bias, the investigators will initially hypothesize that there is no difference in periodontal status, jawbone remodeling, tooth sensitivity, pain and quality of life in patients having teeth with chronic periodontitis and receiving LLLT with orthodontic treatment versus teeth undergoing orthodontic treatment without incorporation of LLLT.
Detailed description
On the basis of the investigators' pilot study results, 35 patients with chronic periodontitis will be recruited and initially treated for inflammation. Using a randomized split-mouth design,the teeth in experimental (laser) group will receive LLLT while the teeth in the control (placebo) group will receive no laser treatment. The effects of LLLT in orthodontic-periodontal treatment on periodontal inflammation control, jawbone remodeling, reduction of tooth sensitivity, pain relief and quality of life will be investigated.
Interventions
DEVICElow-level laser therapy
The test teeth will receive LLLT using a 940 nanometer diode laser (EZLASE; BIOLASE Technology Inc., Irvine, CA, USA) with output power of 330 milliwatt. The experimental side was irradiated for 30 s in two sessions, delivering an energy density of 7 Joules per square centimeter.
OTHERorthodontic treatment
Orthodontic treatment will be carried out using preadjusted appliances with bonded 0.022×0.028-square inch brackets/buccal tubes and 0.014-inch NiTi archwires as the first archwires. The treatment or the major part of the treatment will be completed in 12 months.
Sponsors
The University of Hong Kong
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Healthy volunteers
Yes
Inclusion criteria
1. Systemically health (with special regard to disease affecting tissue repair); 2. No medications required for periodontal therapy and no use of any antibiotic and/or anti-inflammatory medication in the preceding month; 3. Chronic periodontitis with at least two pairs (clinically matched) displaced single-rooted teeth (each pair of teeth is in the same arch but in two contralateral hemi-arches respectively belonging to the same tooth typology) having at least one site probing depth of 5 mm or more, interproximal attachment loss of 3 mm or more, and radiographic signs of alveolar bone loss. 4. Periodontal status confirmed by periodontal evaluation remains stable for at least 6 months after complete periodontal treatment.
Exclusion criteria
1. smoking; 2. pregnancy; 3. under orthodontic treatment.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| inflammatory cytokine levels in the gingival cervical fluid | up to 12 months |
Countries
Hong Kong
Outcome results
None listed