. Author manuscript; available in PMC: 2015 Feb 1.

Published in final edited form as: Dent Mater. 2013 Dec 13;30(2):227–233. doi: 10.1016/j.dental.2013.11.007

Table 2.

Total MMP activity (absorbance) detected in completely demineralized dentin specimens before and after the application of different cross-linking solutions for 30 s or 60 s.

Dentin treatment	Application time

	30 s		60 s

	Initial MMP activity	Post-treatment MMP activity	Initial MMP activity	Post-treatment MMP activity
Water	0.227 (0.146–0.279)^*^a	0.265 (0.235–0.334)^a	0.255 (0.225–0.302)^a	0.232 (0.176–0.239)^a
0.5 M EDC	0.183 (0.157–0.229)^a	0.095 (0.072–0.106)^b	0.378 (0.332–0.426)^a	0.100 (0.070–0.160)^b
1 M EDC	0.255 (0.240–0.319)^a	0.136 (0.085–0.173)^b	0.266 (0.236–0.311)^a	0.052 (0.045–0.079)^b
2 M EDC	0.252 (0.236–0.279)^a	0.095 (0.077–0.102)^b	0.241 (0.194–0.260)^a	0.042 (0.034–0.061)^b
10% GA	0.183 (0.141–0.209)^a	0.092 (0.078–0.108)^b	0.384 (0.318–0.492)^a	0.105 (0.100–0.120)^b

Values are expressed as absorbance at 412 nm after 60 min of incubation in SensoLyte substrate and represent median values (25 percentile–75 percentile), n = 10.

Within each dentin treatment and application time (initial vs after-treatment MMP activity), medians identified by the same letter are not statistically different (Wilcoxon, p > 0.05).