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Table 1 Mean and standard deviation values of peroxide diffusion (µg/mL) for each experimental group (n = 10). Pairwise comparisons are given with respect to intraorifice barrier (Factor 1) and time frame (Factor 2) for each bleaching agent and control

From: Evaluation of the penetration of intracoronal bleaching agents into the cervical region using different intraorifice barriers

Groups Mean ± SD
Bleaching agent Barrier Day 1 Day 4 Day 7
Hydrogen Peroxide (HP) Biodentine 0.325 ± 0.042Aa 0.188 ± 0.069 Aa 0.106 ± 0.049 Aa
GIC 1.324 ± 0.292Ab 0.515 ± 0.226Bb 0.103 ± 0.037Ca
ProRoot MTA 0.391 ± 0.218Aa 0.224 ± 0.055ABa 0.112 ± 0.027Ba
TheraBase 0.819 ± 0.358Ac 0.565 ± 0.261Bb 0.136 ± 0.023Ca
Sodium Perborate (SP) Biodentine 0.312 ± 0.142Aa 0.191 ± 0.056 Aa 0.094 ± 0.015 Aa
GIC 0.434 ± 0.136 Aa 0.235 ± 0.104 ABa 0.079 ± 0.010Ba
ProRoot MTA 0.277 ± 0.097 Aa 0.187 ± 0.027 Aa 0.073 ± 0.041 Aa
TheraBase 0.369 ± 0.194 Aa 0.247 ± 0.048 ABa 0.080 ± 0.011Ba
Control (Water) Biodentine 0.034 ± 0.015 Aa 0.026 ± 0.010 Aa 0.018 ± 0.005 Aa
GIC 0.039 ± 0.013 Aa 0.026 ± 0.007 Aa 0.021 ± 0.005 Aa
ProRoot MTA 0.048 ± 0.018 Aa 0.030 ± 0.005 Aa 0.026 ± 0.006 Aa
TheraBase 0.045 ± 0.020 Aa 0.028 ± 0.009 Aa 0.027 ± 0.006 Aa
  1. Means sharing a superscript letter are not significantly different (p > 0.05)
  2. Uppercase letters compare means in each row (day factor)
  3. Lowercase letters compare means in each column (intraorifice barrier factor) for each bleaching agent and control