Do the Microshear Test Variables Affect the Bond Strength Values?

Table 3

Mean bond values and standard deviation (MPa) with and without PTF and according to each experimental condition (*).

Adhesive	Groups	PTF inclusion	PTF exclusion
Adper single bond	1	14.0±5.7^d	14.8±3.1^D
	2	18.1±3.6^c,d	18.1±3.6^C,D
	3	37.7±3.7^a	37.7±3.7^A
XP bond	1	14.7±4.2^d	16.2±4.2^C,D
	2	19.7±1.6^c	20.5±1.1^C
	3	26.0±4.4^b	26.0±4.4^B

(*) Lowercase letters indicated significant difference between “pretest (PTF) failure inclusion” (𝑃<0.05); capital letters indicated significant difference between “PTF exclusion” (𝑃<0.05).