Table 2 Classification of ORN by Marx [[1]
From: New approach for the treatment of osteoradionecrosis with pentoxifylline and tocopherol
| Stage | Description |
|---|---|
| I | Exposed alveolar bone without pathologic fracture, which responds to hyperbaric oxygen therapy |
| II | Disease does not respond to HBOT, and requires sequestrectomy and saucerization |
| III | Full thickness bone damage or pathologic fracture, usually requires complete resection and reconstruction with free tissue |