Cell-to-cell interactions
Apical periodontitis – equilibrium between protective and destructive mechanisms. Inflammatory events in response to root canal infection. Initiation of the apical periodontitis lesion – interaction between resident host cells and root canal microbes.
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Radiographic healing after retrograde filling. Extracted tooth held in forceps. Glass ionomer and zinc oxide-eugenol cements, calcium-hydroxide liner, temporary filling material. AH 26 as root canal sealer. Retrograde gutta-percha with various sealers.
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