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Table 1 Summary of experimental conditions

From: Photodynamic therapy as a novel treatment for halitosis in adolescents: study protocol for a randomized controlled trial

Group

Halitosis

Treatment

1

H2S ≥112 ppb

Tongue scraper

2

H2S ≥112 ppb

PDT

E = 9 J

T = 90 s

3

SH2 ≥ 112 ppb

Tongue scraper + PDT

  

E = 9 J

T = 90 s

  1. H2S = hydrogen sulfide; ppb = part per billion; PDT = photodynamic therapy; E = energy; T = time in seconds.