microscopic features of gingiva

PRESENTED by : Dr. Jayshree gaur

CONTENTS

Microscopic features Structural and metabolic characteristics of gingival

epithelium Formation of dentogingival junction

Defense mechanisms of gingiva Renewal of gingival epithelium Cuticular structures

on teeth References

Introduction

Collectively all the soft tissues of the mouth are known as oral

mucosa.

Oral mucosa – 3 zones :-

1) Masticatory mucosa = Gingiva + covering of hard

palate

2) Specialized mucosa = Dorsum of tongue + taste buds

3) Lining or reflecting mucosa = oral mucous membrane lining

the remainder of oral cavity (lip,cheek,vestibular

fornix,alveolar mucosa,floor of mouth,soft palate)

Definitions :-

- It is the part of oral mucosa that covers the alveolar process of the jaws and surrounds the necks of the teeth. (Carranza 2003)

Anatomically it consists of three types of gingiva

•Marginal gingiva•Attached gingiva•Interdental gingiva

GINGIVA

They lack desmosomes and tonofilaments but possess long dendritic processes that inoculate the melanosomes into the cytoplasm of adjacent keratinocytes.

(Oral Histology-Ten Cate)

Palate-Most Keratinized

Gingiva

Tongue

Cheek (Least Keratinized)

Hypoglycemia and nutritional deficiencies decrease the mitotic rate. (Manson,Eley 4th edition)