Effects of hyperbaric oxygen on subgingival obligately,facultatively anaerobes and black pigmented bacteroides in periodontics pocket / 实用口腔医学杂志

ABSTRACT

Objective: To investigate the effects of hyperbaric oxygen(HB0_2) on black pigmented bacteroides groups(BPB), obligately and facultatively anaerobes of periodontitis. Methods: 60 periodontitis cases were divided into 2 groups. The HB0_2 group(gingival scaling was done at the first visit)was exposed in 0.25 MPa pure oxygen 90 minutes each day, and treated 10 days continuously. The control group received gingival scaling at the first visit. The clinical indices of each group were measured. The microorganisms in periodontal pocket were incubated and analyzed. The number of subgingival anaerobes as well as the number of BPB,obligately and facultatively anaerobes were measured and counted by routine anaerobic culture. Results: Highly significant differences in Gingival Indices (GI), Probing Depth (PD), Attachment Loss (AL), and also significant differences in Plaque Index (PLI),and teeth mobility were seen between the HB0_2 group and the control group. There were significant difference of PLI, GI,PD,AL, teeth mobility in HB0_2 group pre-therapy and post-therapy. There were significant difference of subgingival anaerobes amounts, obligately and facultatively anaerobes sorts between pre-therapy and post-therapy. The positive rate of BPB of group HB0_2 post-therapy were reduced more than that of pre-therapy(P<0.01). Conclusion: HB0_2 has beneficial therapeutic effects on chronic and aggressive periodontitis. The mechanism of the HB0_2 therapy might inhibit the growth of subgingival obligately and facultatively anaerobes and BPB of human periodontitis, especially the obligately anaerobes and BPB in periodontal pockets.