Rete pegs
Rete pegs (also known as rete processes or rete ridges) are the epithelial extensions that project into the underlying connective tissue in both skin and mucous membranes.
![](../I/Normal_Epidermis_and_Dermis_with_Intradermal_Nevus_10x.JPG.webp)
Skin epithelium (purple) with lamina propria (underlying connective tissue) (pink) -- the epithelium exhibits rete pegs. Rete pegs protect the tissue from shearing.[1]
In the epithelium of the mouth, the attached gingiva exhibit rete pegs, while the sulcular[2] and junctional epithelia do not.[3] Scar tissue lacks rete pegs and scars tend to shear off more easily than normal tissue as a result.[1]
Also known as papillae, they are downward thickenings of the epidermis between the dermal papillae.
References
- Ira D. Papel (2011). Facial Plastic and Reconstructive Surgery (Third ed.). USA: Thieme Medical Publishers. p. 7. ISBN 9781588905154.
- Itoiz, ME; Carranza, FA: The Gingiva. In Newman, MG; Takei, HH; Carranza, FA; editors: Carranza’s Clinical Periodontology, 9th Edition. Philadelphia: W.B. Saunders Company, 2002. pages 23.
- Page, RC; Schroeder, HE. "Pathogenesis of Inflammatory Periodontal Disease: A Summary of Current Work." Lab Invest 1976;34(3):235-249
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