Journal
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
Volume 32, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.pdpdt.2020.101998
Keywords
Bacteria; Pain; Inflammation; Gingivitis; Orthodontics; Photodynamic Therapy
Categories
Funding
- Deanship of Scientific Research at King Khalid University [R.G.P 1/243/41]
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Background: The aim of the present study was to evaluate the effectiveness of photodynamic therapy (PDT) on clinical gingival inflammatory parameters, bacterial load, proinflammatory cytokine status, and pain scores in adolescent patients undergoing fixed orthodontic treatment with gingivitis. Methods: Thirty adolescent undergoing fixed orthodontic treatment with gingivitis were randomly divided into two groups: Group A - patients undergoing dental scaling (DS) with adjunctive photodynamic therapy (PDT) and Group B-DS alone. Clinical gingival parameters including plaque scores, (PS), bleeding on probing (BOP) and probing depth (PD) were assessed. Visual analogue scale (VAS) and McGill Pain Questionnaire (MPQ) were used to report the values of present pain intensity. Crevicular fluid was sampled to quantify the levels of interleukin (IL)-6 and tumor necrosis factor (TNF)-alpha using enzyme-linked immunosorbent assay. The total bacterial counts for Porphyromonas gingivalis (P. gingivalis) and Tannerella forsythia (T. forsythia) were assessed. All examinations were performed at baseline, 1 week and 4 weeks. Results: Both the treatment regimens reported statistically significant reduction in PS and BOP (p < 0.05). However, no significant difference was observed in PS and PD values when Group B was compared with Group A (p > 0.05). There was a statistically significant reduction noted for BOP in Group B when compared to Group A (p < 0.05). There was a statistically significant reduction in the microbial counts of T. forsythia in Group A when compared to Group B at week-1 (p < 0.05). During the 4-week follow-up, the counts for T. forsythia significantly increased. No significant changes could be seen in either of the pain scores in both the groups (p > 0.05). Both groups showed statistically significant reduction in the IL-6 and TNF-alpha levels. However, IL-6 was significantly reduced at 1 week, while TNF-alpha significantly reduced at 4 weeks of follow up among the participants in Group B. Conclusion: PDT has a positive effect in significantly reducing the periodontal microbial load in established gingivitis in adolescent patients undergoing fixed orthodontic treatment.
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