. 2011 Sep-Oct;19(5):469–475. doi: 10.1590/S1678-77572011000500006

Table 1.

Mean number of exposed dentin tubules and corresponding area after conditioning with the four different demineralizing agents

	Citric acid	Tetracycline-HCl	Phosphoric acid	EDTA	Control group (saline)
Mean number of exposed tubules	39.3±37.0^A	43.8±25.2^A	12.1±16.3^Aa	4.4±7.5^Ba	2.3±5.7^Ba
Mean area occupied by enlarged tubules (%)	0.12±0.17^A	0.08±0.06^Aa	0.03±0.05^Ba	0.01±0.01^Ba	0.00±0.00^B

Same uppercase or lowercase letter in the same line means no statistically significant difference (p>0.05).