The Nanomechanical and Tribological Properties of Restorative Dental Composites after Exposure in Different Types of Media

Table 3

Mean and standard deviation (S.D.) of depth parameters from nanoscratch test (nm).

Sample	Distilled water	Orange juice	Cola
	1 cycle	1 cycle	1 cycle
Z350	91.47 (0.23)^aA	95.83 (0.45)^bB	93.45 (0.47)^dC
TPH^3	101.44 (1.23)^bA	105.41 (1.31)^cB	102.82 (0.92)^aC
Superlux	111.30 (1.64)^cA	119.14 (1.43)^dB	115.10 (2.24)^bC
Durafill	122.27 (2.12)^dA	130.94 (2.45)^aB	127.31 (1.99)^cC

Different uppercase letters in the same line indicate differences for storage media; different lowercase letters in the same column indicate differences for materials (P < 0.05).