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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Acta Biomater. 2013 Dec 7;10(3):1050–1063. doi: 10.1016/j.actbio.2013.11.015

Figure 5.

Figure 5

A. SEM of a polyvinylsiloxane impression negative replica of a section of a single-rooted canal that was obturated using a gutta-percha-based core-carrier technique. The gap-free interface between the plastic core (C) and the gutta-percha (G) can be seen (open arrowheads). A gap is evident within the canal fin (arrow). D: root dentin. Bar = 200 μm. B. High magnification of Figure 5A showing the aforementioned gap as a protruded piece of impression material (arrow) between the gutta-percha (G) and root dentin (D). Open arrowhead: interface between the obturator core and gutta-percha. Bar = 50 μm. C. SEM image obtained by direct observation of a single-rooted canal obturated using a gutta-percha-based core-carrier technique. Extension of the root filling material and sealer into patent dentinal tubules can be seen. C: plastic core; G: gutta-percha; D: root dentin. Bar = 200 μm. D. High magnification of Figure 5C showing extension of highly granular gutta-percha (G) into the dentinal tubular orifices (arrow). The rest of the tags that occupied the dentinal tubules is contributed by the root canal sealer. D: root dentin. Bar = 5 μm.