Fig. 3
From: Reactionary and reparative dentin formation after pulp capping: Hydrogel vs. Dycal
a Alcian blue (AB)-positive staining 2 weeks after Hydrogel capping. Alcian blue structures are seen in the pulp (dotted arrow). Alcian blue-positive calciotraumatic lines (arrow) separate the dentin formed before the pulp exposure from the reactionary dentin formed after pulp capping. b After 2 weeks Hydrogel (Hy—dotted arrow) contributes to the formation of a reparative dentinal bridge. c After 2 weeks, Hydrogel capping induces two reactions: firstly calciotraumatic reactionary lines within dentin (arrows) and secondly Alcian blue-positive cell aggregates in the pulp (dotted arrow). Bars: 100 μm