| 
   Staging: AAOMS classification [46]
  | Stage | Related Treatment |  
  | Stage 0 | Antiseptic mouth rinses; medical therapy (antibiotic, antimycotic, antiphlogistic, analgetic); LLLT (altered neurosensory function); PDT (fistulas; HelboMinilaser 2075 F dent [HELBO Photodynamic Systems, Austria], 75 mW, 680 nm; photosensitizer: methylene-blue;) |  
  | Stage 1 | Intital CoTr for max. 8 weeks; LRST; impaired healing: Disinfectant rinsing, PDT |  
  | Stage 2 | Preoperatively: CoTr, PDT; LRST; impaired healing: Disinfectant rinsing, PDT |  
  | Stage 3 | Radical surgery; impaired healing: Disinfectant rinsing, PDT |  LRST: limited-resective surgical therapy; CoTr: conservative treatment;
 |