Effect of Preirradiation Fluoride Treatment on the Physical Properties of Dentin

Table 3

Effect of irradiation on KHN of dentin.

Treatment	KHN of polished dentin	KHN after fluoride treatment	KHN immediate postirradiation	KHN 9 weeks postirradiation
Control (no fluoride treatment)	58.8(14.1)^b	—	39.0 (13.3) ^ce	47.0 (15.9) ^bde
SDF	55.7 (22.1)^b	136.6 (13.7)^a	36.6 (11.3) ^cf	47.2 (16.9) ^bdf
MI	55.0 (19.8)^b	66.2 (11.3) ^bg	37.2 (9.3)^c	57.4 (13.9) ^bdg
CS	59.08(15.7)^b	48.5 (27.5) ^bh	33.5 (7.1)^c	58.0 (15.8) ^bdh

Note: mean values with the same superscript are not significantly different ().