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. 2017 Jun;18(2):82–87.

Table 1.

The mean shear bond strength of two composites and pretreatment materials (a = p≤ 0.05, b = p≤ 0.01, c = p≤ 0.001)

Groups		Mean±SD	Significant Differences
1	Z350 (I)	21.43±2.03	I vs. II ^(b),IV ^(c),V ^(c)
2	Z350+NaOCl (II)	18.59±2.29	II vs. I ^(b), III ^(a), V ^(b), VI ^(c)
3	Z350 +TiF₄ (III)	21.1±0.64	III vs. II ^(a), IV ^(c), V ^(c)
4	P90 (IV)	18.1±1.79	IV vs. I ^(c), III ^(b), V ^(b), VI ^(c)
5	P90 + NaOCl (V)	15.9±1.22	V vs. I^(c), II ^(b), III^(a), IV^(b), VI^(c)
6	P90 + TiF₄ (VI)	20.7±1.19	VI vs. II ^(c), IV ^(c), V ^(c)