Modulation of Dental Pulp Stem Cell Odontogenesis in a Tunable PEG-Fibrinogen Hydrogel System

Table 2

Characterization of PEG-fibrinogen (PF) hydrogels^a.

Gel type	% PEG-DA	(Pa)	Gel point (s)^b	Time required to reach plateau (s)
PF-0	0	140.1 ± 1.8	11.4 ± 0.2	38.2 ± 0.2
PF-0.5	0.5	453.8 ± 12.6	11.5 ± 0.1	51.7 ± 0.1
PF-1.5	1.5	1574 ± 21.2	17.4 ± 2.6	82.6 ± 0.1
PF-2.5	2.5	3601 ± 46.5	23.4 ± 2.5	127.4 ± 4.5

Measurements were taken at room temperature in the time-sweep oscillatory mode with a sinusoidal 2% strain rate and a 6 rad s⁻¹ angular frequency (Mean ± SD; = 3).
^bGel point is defined as the time at which the crossover of storage modulus () and loss modulus () occurred. Herein, it is used as an indicator of the rate of gelation.