Immunohistochemical identification of lymphatic vessels in the periodontium of equine cheek teeth.

TitleImmunohistochemical identification of lymphatic vessels in the periodontium of equine cheek teeth.
Publication TypeJournal Article
Year of Publication2005
AuthorsStaszyk C, Duesterdieck KF, Gasse H, Bienert A
JournalJournal of veterinary dentistry
Volume22
Issue4
Pagination227-32
Date Published2005 Dec
ISSN0898-7564
KeywordsAnimals, Female, Horses, Immunohistochemistry, Lymphatic System, Lymphatic Vessels, Male, Mandible, Maxilla, Periodontium
Abstract

Immunohistochemical detection of lymphatic capillaries was performed in the periodontium of maxillary and mandibular cheek teeth from 6 horses (aged 3-23 years). Tissue sections of the periodontium were taken at 4 different horizontal levels along the long axis of the tooth. The specimens were processed for immunoreaction with anti-Prox1, in order to distinguish lymphatic endothelium from blood vascular endothelium. Lymphatic vessels were detected in all periodontal tissues except for the dental cementum. Lymphatic capillaries were most densely distributed in the gingiva compared to other tissues of the periodontium. Lymphatic capillaries were found most consistently in samples taken from the gingival and subgingival regions in all horses examined. Within these levels, the gingiva as well as the spongiosa of the maxillary and mandibular bone had the greatest incidence of lymphatic vessels. Considering the distinct distribution of the lymphatic capillaries in the periodontium of the maxillary and mandibular cheek teeth, two complementary lymphatic drainage pathways are proposed: (1) superficial lymph drainage via the gingiva, emptying into the mandibular lymph nodes; (2) deep lymph drainage via the mandibular and maxillary spongiosa, emptying into the mandibular and retropharyngeal lymph nodes, respectively.

Alternate JournalJ Vet Dent