Table 1. Microtensile bond strength (MPa) of the experimental groups.

Groups	Number of obtained specimens	Number of premature failures	Mean (Pa) ± SD†
1: Control	14	2	34.5 ± 13.1A
2: ACP	13	3	19.8 ± 6.9C
3: Chemical mixture of NACP and NAg	16	0	30.3 ± 10.3AB
4: Physical mixture of NACP and NAg	14	2	23.5 ± 8.4BC

^*Some superscripts indicate no significant differences between two groups.