Journal
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
Volume 33, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.pdpdt.2020.102128
Keywords
Halitosis; Elderly; Photodynamic therapy; aPDT
Categories
Funding
- UNINOVE Research Fund
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The study demonstrates that using aPDT treatment is more effective in reducing halitosis in older people with complete dentures compared to tongue scraping, as it can lower the H2S concentration to socially unnoticeable levels and maintain this effect for seven days.
Background: Halitosis of oral origin is mainly caused by the release of H2S (hydrogen sulfide) by bacteria lodged on the tongue. Antimicrobial photodynamic therapy (aPDT) has been evaluated for the treatment of halitosis, but there are no previous reports of the use of this treatment modality in older people with dentures. The aim of the present study was to compare the effect of aPDT and tongue scraping (standard treatment) in older people with complete dentures diagnosed with halitosis (H2S gas concentration>112 ppb). Methods: The participants were divided into two groups: G1- treatment with a tongue scraper (n = 20); G2- treatment with aPDT (n = 20). Halimeter testing was performed before and after treatments using gas chro-matography and was repeated after seven days. Results: After treatment, the group treated with aPDT had a lower mean concentration of H2S gas (18.5 ppb) than the tongue scraping group (185.3 ppb). After one week, the mean concentration of H2S increased to 218.2 ppb in the tongue scraping group and 39 ppb in the PDT group. Conclusions: Both treatments were able to reduce the concentration of H2S but only treatment with aPDT was able to decrease halitosis to socially unnoticeable levels. Moreover, this normal breath condition remained for seven days only in the aPDT group.
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