Table 1 Mean and standard deviations of the longitudinal microhardness values (Knoop) of the enamel at different depths of the deciduous teeth following irradiation

Control (nonirradiated)

180.13 ± 36.85^bc

187.82 ± 32.63^B

206.22 ± 51.41^▲

Irradiated 10 Gy

166.23 ± 27.92^c

182.89 ± 24.22^C

205.03 ± 28.39^▲

Irradiated 20 Gy

173.00 ± 42.78^c

184.09 ± 33.43^C

196.78 ± 28.70^▲

Irradiated 30 Gy

185.73 ± 25.17^b

187.11 ± 20.63^B

205.81 ± 20.95^▲

Irradiated 40 Gy

188.03 ± 43.49^a

196.70 ± 27.18^AB

209.72 ± 23.97^▲

Irradiated 50 Gy

197.91 ± 44.04^ab

205.64 ± 17.65^AB

208.67 ± 25.62^▲

Irradiated 60 Gy

202.30 ± 17.71^a

217.42 ± 25.33^A

214.47 ± 25.99^▲