Abstract
The etiology of surface and inflammatory root resorption after the replantation of
incisors was examined in green vervet monkeys. The teeth were examined histologically
and histobacteriologically for pulpal healing and root resorption 2 and 8 weeks after
replantation. In contrast to surface resorption, inflammatory resorption was related
to infected necrotic tissue or an infected leukocyte zone in the root canal. The following
theory for surface and inflammatory resorption is presented. Damaged periodontal ligament
areas and damaged parts of the root surface are attacked by a resorption process whereby
resorption of cementum and dentin may occur. Inflammatory resorption or surface resorption
will then occur depending on the pulpal status and the depth of the resorption cavity.
If the resorption cavity penetrates the intermediate layer of cementum and contacts
dentinal tubules that are in communication with infected necrotic pulp tissue or an
infected leukocyte zone, then inflammatory resorption will take place as a result
of the diffusion of toxic elements from the pulp canal to the resorption cavity. However,
if the resorption cavity is shallow and does not penetrate the intermediate layer
of cementum, a tooth that displays similar pulpal changes will elicit only surface
resorption because the intermediate layer of cementum will tend to arrest the diffusion
of toxic elements. Finally, if the pulp contains vital, inflamed, or noninflamed tissue
or if root canal treatment has been performed, surface resorption will occur regardless
of the depth of the cavity.
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Article info
Publication history
Published online: May 08, 2021
Footnotes
This article is a reprint of a previously published article. For citation purposes, please use the original publication details: J Endod 1981;7:294-301.
DOI of original item: 10.1016/S0099-2399(81)80095-7
Identification
Copyright
© 2021 Published by Elsevier Inc. on behalf of American Association of Endodontists.
