In this study, we reported on treatment using Hyper-Barie Oxygen (HBO) therapy in 4 cases
of hard tissue injury in patients undergoing radiation-therapy for head and neck cancer.
From January 2005 to December 2005, 4 patients referred to us from the Kyushu National Cancer
Center (Males :4 cases ;oral floor: 3 cases ;tongue: 1 case) were treated using HBO therapy
at the Dentistry and Oral Surgery section of Keikokai Hara Hospital.
As for treatment results, complete separation of sequester was revealed in 1 case, partial separation in 2 cases and non-separation in lease. As for the delay of mucosal tissue, 1 case was
completely delayed, 2 cases were partially delayed and the remaining case was not delayed.
In the case of osseo-radionecrosis/osteomyelitis treated using HBO therapy, separation of necrotic
bone from mandible was not recognized, and mucosal tissue was delayed or did not cover
completely.
In the subjective assessment using visual analogue scale (VAS), both spontaneous pain and
stimulated pain tended to improve after HBO therapy. However, xerostomia did not demonstrate
any improvement.
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