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Table 2 Dental extraction characteristics (N = 389)

From: Predictors of osteoradionecrosis following irradiated tooth extraction

Variable Category n (%)
Tooth type Lower incisor/canine 86 (22.1%)
  Upper incisor/canine 55 (14.1%)
  Lower premolar 42 (10.8%)
  Upper premolar 41 (10.5%)
  Lower molar 75 (19.3%)
  Upper molar 90 (23.1%)
Tooth pathology Periapical periodontitis related 145 (37.3%)
  Caries-related 178 (45.7%)
  Perio-related 42 (10.8%)
  Mixed caries-perio related 8 (2.1%)
  Others 4 (1.1%)
  No data 12 (3.1%)
Procedure Simple extraction 259 (66.6%)
  Surgery 125 (32.1%)
  No data 5 (1.3%)
Operator Dental Officer 188 (48.3%)
  Postgraduate 81 (20.8%)
  Specialist 113 (29.0%)
  No data 7 (1.8%)
Primary closure Yes 198 (50.9%)
  No 186 (47.8%)
  No data 5 (1.3%)
Antibiotic post-extraction One antibiotic 255 (65.6%)
  Multiple antibiotics 84 (21.6%)
  No antibiotic prescribed 44 (11.3%)
  No data 6 (1.5%)
Teeth within target volume Yes 107 (27.5%)
  No 107 (27.5%)
  No data 175 (45.0%)
Total dose Below 60 Gy 122 (31.4%)
  60 Gy and above 95 (24.4%)
  No data 172 (44.2%)
Time of extraction post radiotherapy 3 months to 1 year 13 (3.3%)
  1–5 years 103 (26.5%)
  > 5 years 273 (70.2%)