Marginal Sealing Durability of Two Contemporary Self-Etch Adhesives

Table 4

Mean rank of dye penetration in the different study groups.

Substrate	Groups numbers and definitions	Mean rank
		CPB	BB
Enamel	(1) 24 h	23.71^Aa	25.33^Aa
	(2) Thermocycled	27.21^Aa	19^Aa
	(3) Water stored	19.50^Aa	31.83^Ba
	(4) Thermocycled and water stored	27.50^Aa	21.83^Aa
Dentin	(1) 24 h	32.42^Aa	24.46^Aa
	(2) Thermocycled	30.58^Aa	22.79^Aa
	(3) Water stored	17.50^Ab	24.46^Aa
	(4) Thermocycled and water stored	17.50^Ab	26.29^Aa

Means followed by different letters show statistical differences (𝛼=0.05). Uppercase letters: comparison of each procedure for each adhesive (row). Lowercase letters: comparison of adhesives at each procedure (column). CPB: Clearfil Protect Bond; BB: BeautiBond; WS: water stored; T: thermocycled.