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Table 2 Mean of the maximum and mean of the average dosages (Gy) received by dental groups of patients submitted to IMRT and 3DRT protocols

From: IMRT delivers lower radiation doses to dental structures than 3DRT in head and neck cancer patients

  IMRT 3DRT
Mean maximum Mean average Mean maximum Mean average
Tongue cancer
 Lower teeth
  Anterior 56.9 42.8 36.4 32.5
  Pre-molars 51.5 43.6 56.9 49.5
  Molars 50.8 42.3 64.7 59.1
 Upper teeth
  Anterior 41.0 26.4 23.7 19.0
  Pre-molars 42.7 36.1 20.9 16.8
  Molars 47.5 36.7 43.7 37.7
Oral cavity cancer
 Lower teeth
  Anterior 47.0 34.6 48.9 43.7
  Pre-molars 43.5 37.2 46.1 39.9
  Molars 46.3 39.2 66.8 51.6
 Upper teeth
  Anterior 38.4 24.0 37.2 34.3
  Pre-molars 34.7 26.1 47.7 42.6
  Molars 44.7 35.5 56.7 52.2
Oropharynx cancer
 Lower teeth
  Anterior 32.3 25.0 24.9 18.3
  Pre-molars 36.5 31.3 40.6 34.5
  Molars 50.5 41.0 57.0 52.1
 Upper teeth
  Anterior 28.0 19.6 20.6 13.2
  Pre-molars 34.1 28.4 47.5 39.9
  Molars 46.8 36.6 55.7 49.2
Nasopharynx cancer
 Lower teeth
  Anterior 30.2 22.3 32.2 21.5
  Pre-molars 37.1 28.0 44.9 37.5
  Molars 54.6 39.9 65.6 57.2
 Upper teeth
  Anterior 31.7 23.6 28.6 18.2
  Pre-molars 35.1 28.7 40.7 30.3
  Molars 52.5 38.8 60.8 50.3