Efsun Somay Marx et al. classification and Notani et al. classification are two of the most frequently used osteoradionecrosis classification methods in clinical practice. The Marx et al. classification is a commonly used method based on osteoradionecrosis staging, whereas the Notani et al. classification concentrates on osteoradionecrosis location. The classification method used may be determined by the clinician's preferences as well as the particular instance being evaluated.

hello,

https://pubmed.ncbi.nlm.nih.gov/24725905/

https://pubmed.ncbi.nlm.nih.gov/3468211/

https://www.frontiersin.org/articles/10.3389/froh.2022.980786/full

hope those refs help