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(Dentistry) dentistry the inflammation of periodontal tissue
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌpɛr i oʊ dɒnˈtaɪ tɪs)

1. inflammatory disease of the periodontium.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.periodontitis - a disease that attacks the gum and bone and around the teeth
pyorrhea alveolaris, Riggs' disease, pyorrhea, pyorrhoea - chronic periodontitis; purulent inflammation of the teeth sockets
alveolar resorption - wasting of the bony socket
gingivitis - inflammation of the gums
ulatrophia - recession of the gums
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


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Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
Even with the above-mentioned limitation, our results demonstrate that PD-1 and CTLA-4, which are associated with T-cell exhaustion, are expressed in higher levels in chronic periapical periodontitis. This confirms our hypothesis that exhausted T lymphocytes are present in the apical periodontitis lesions.
This study showed that PD-1, PD-L1, and CTLA-4 molecules are detected in the apical periodontitis lesions and can be an important immune checkpoint in chronic periapical periodontitis. The contribution of costimulatory molecules to the immunopathogenesis of chronic apical periodontitis needs to be be investigated further.

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