Evaluation of the Pulp Oxygen Saturation Reading after Tooth Bleaching: A Randomized Clinical Trial

Table 3

Medians (first/third quartiles) of oxygen saturation levels measured at different periods of reading, regardless of the whitening gel used or the dental group evaluated (n = 112, 14 patients).

Before 1^st	After 1^st	Before 2^nd	After 2^nd	Before 3^rd	After 3^rd	Final
97.3 (96.3/98.6)^a	98.6 (97.6/99.3)^b	98.3 (97.3/99.2)^b	98.3 (97.3/99)^ab	98.3 (97.6/99.3)^b	99 (97/100)^b	98.3 (97.3/99)^ab

Medians accompanied by the same superscript lowercase letters in the same line did not show a significant difference (Friedman, ).