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Table 4 Radiation doses delivered to lower (maxillary) and upper (mandibular) teeth using 3DRT and IMRT according to the primary site of the tumor

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

 

Oral cavity

Tongue

Oropharynx

Nasopharynx

Mean average

Mean maximum

Mean average

Mean maximum

Mean average

Mean maximum

Mean average

Mean maximum

3DRT

Maxilla

43.38 (±27.27)aA

48,17 (±27.24)aA

25,31 (±24.36)aB

30,26 (±24.81)aB

37,75 (±27.36)aAB

44,85 (±27.28)aA

34,83 (±17.21)aAB

45,28 (±17.02)aAB

Mandible

43.41 (±26.01)aA

50,86 (±28.29)aA

47,64 (±21.66)bA

53,51 (±19.59)bA

36,99 (±28.47)aA

43,47 (±29.08)aA

40,13 (±16.85)aA

48,66 (±15.95)aA

IMRT

Maxilla

29.58 (±15.02)aA

39.76 (±17.58)aA

35.63 (±19.88)aA

44.07 (±21.33)aA

29.93 (±16.06)aA

38.04 (±19.77)aA

31.75 (±8.99)aA

41.38 (±12.24)aA

Mandible

37.31 (±16.93)bAB

45.23 (±18.35)aAB

42.93 (±15.20)aAB

52.37 (±15.99)aAB

33.92 (±17.44)aA

41.28 (±19.51)aA

31.62 (±9.56)aA

42.74 (±13.69)aA

  1. Different lower case letters in columns mean statistically significant difference (p < 0.05) (t-test). In columns, compare 3DRT groups themselves and IMRT groups themselves
  2. Different upper case letters in rows mean statistically significant difference (p < 0.05) (One way ANOVA test + Tukey’s post-hoc test). In rows, compare mean of the averages themselves and mean of the maximums themselves