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. 2014 Jan 22;9:30. doi: 10.1186/1748-717X-9-30

Table 1.

Mean and standard deviations of the longitudinal microhardness values (Knoop) of the enamel at different depths of the deciduous teeth following irradiation

  Surface enamel Middle enamel Deep enamel
Control (nonirradiated)
180.13 ± 36.85bc
187.82 ± 32.63B
206.22 ± 51.41
Irradiated 10 Gy
166.23 ± 27.92c
182.89 ± 24.22C
205.03 ± 28.39
Irradiated 20 Gy
173.00 ± 42.78c
184.09 ± 33.43C
196.78 ± 28.70
Irradiated 30 Gy
185.73 ± 25.17b
187.11 ± 20.63B
205.81 ± 20.95
Irradiated 40 Gy
188.03 ± 43.49a
196.70 ± 27.18AB
209.72 ± 23.97
Irradiated 50 Gy
197.91 ± 44.04ab
205.64 ± 17.65AB
208.67 ± 25.62
Irradiated 60 Gy 202.30 ± 17.71a 217.42 ± 25.33A 214.47 ± 25.99

Identical symbols (▲ABC, abc) denote statistical similarity within the column.