This study reports the analysis of the amount of pain during 4 days treatment with Chlorine dioxide in patients with oral inflammation (pericoronitis and acute necrotizing ulcerative gingivitis). A visual analogue scale for pain (EVA scale) during a period of 4 days of treatment with Chlorine dioxide was given to patients. The scale used for this study measures from 0-10 the intensity of the pain with a series of "faces" that show the intensity in the pain experimentation. Patients with ANUG had a higher pain score at baseline 10.0 for both men and women. At the end of the first day, the pain dropped to 4.7 (SD 0.9) in male and 4.9 (SD 0.9) in female. On the second day the pain dropped to 3.4 (SD 0.5) and 3.6 (SD 0.5) respectively. On the third day the pain was 2.3 (SD 0.5) and 1.3 (SD 0.5) respectively and on the last day 0.3 and 0.2. This study demonstrates a high level of efficacy of Chlorine dioxide in the treatment of pericoronitis and ANUG where the pain was reduced from worst to mild in 2 days.

Keywords: Chlorine dioxide, ANUG, Pericoronitis, EVA scale