The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 14 , ISSUE 6 ( November-December, 2013 ) > List of Articles

RESEARCH ARTICLE

Assessment of Gingival Mucosa of Infant Rats during Teething

Evamiris Vasques de França Landim, Maria Goretti Freire de Carvalho, Rejane Andrade de Carvalho, Ana Fl#x00E1;via Granville-Garcia, Rennaly de Freitas Lima, Edja Maria Melo de Brito Costa

Citation Information : de França Landim EV, de Carvalho MG, de Carvalho RA, Granville-Garcia AF, de Freitas Lima R, de Brito Costa EM. Assessment of Gingival Mucosa of Infant Rats during Teething. J Contemp Dent Pract 2013; 14 (6):1009-1013.

DOI: 10.5005/jp-journals-10024-1441

Published Online: 01-12-2013

Copyright Statement:  Copyright © 2013; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The aim of the present study was to perform a histological analysis of the gingival mucosa in infant rats undergoing the teething process.

Materials and methods

Eighteen Wistar rats between 8 and 15 days of life were distributed among three groups: group A—without teething; group B—eruption of incisors; and group C— eruption of incisors and molars. The samples included teeth and periodontal tissue from the region of the incisors and molars of each animal. Fragments were processed for histological analysis and submitted to immunohistochemical analysis.

Results

In the 8-day-old rats, mild inflammatory infiltrate predominated with mononuclear cells in the pericoronal follicles of the incisors and molars. At 12 days of age, all animals exhibited moderate inflammation in the pericoronal follicles and epithelium of the incisors and mild inflammatory infiltrate with predominantly mononuclear cells in the molars. At 15 days of age, moderate neutrophilic exudate was found in the pericoronal follicles and epithelium of the incisors and molars. Immunohistochemical analysis revealed positivity for interleukin- 1b in the pericoronal follicles in the pre-eruption phase.

Conclusion

An inflammatory reaction with progressive intensity occurs during the teething process, the response of which is preceded by the release of interleukin-1b.

Clinical significance

Morphological proof of events that occur during teething that can affect the dynamics of the physiologic process manifesting as clinical symptoms.

How to cite this article

de França Landim EV, de Carvalho MGF, de Carvalho RA, Granville-Garcia AF, de Freitas Lima R, de Brito Costa EMM. Assessment of Gingival Mucosa of Infant Rats during Teething. J Contemp Dent Pract 2013;14(6):1009- 1013.


PDF Share
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.