PPT-MICROANATOMY OF GINGIVA

Gingiva consists of two parts Epithelium stratified squamous epithelium Connective tissue GINGIVAL EPITHELIUM can be divided into Oral outer Epithelium faces the oral cavity . Osteon (. Haversian. ) System. Central (. Haversian. ) Canal. Perforating (Volkmann’s) Canal. Osteocyte. Lacuna. (space). Sharpey’s. Fibers. Periosteum. Spongy Bone. Compact Bone. Osteon System. PERIODONTIUM. INTRODUCTION. Systemic . diseases,disorders&conditions. Altered host . tissue&physiology. Impair the host’s barrier . function&immunity. Creating opportunity –periodontal destruction. Level of attachment:. The level of attachment is the distance between the base of the pocket and a fixed point on the . crown,such. as the CEJ. . Changes in the level of attachment can be due to gain or loss of attachment and gives a better indication of degree of periodontal destruction.. . Color- “. coral pink”. . . depends upon. - . Vascular supply. - Thickness of epithelium. - Degree of .  . - . (from lat. . retractio. tightening, reduction) means the reduction of cells, tissue, or other morphological formation due to the reduction (shortening) of certain elements of its structure.. Osteon (. Haversian. ) System. Central (. Haversian. ) Canal. Perforating (Volkmann’s) Canal. Osteocyte. Lacuna. (space). Sharpey’s. Fibers. Periosteum. Spongy Bone. Compact Bone. Osteon System. extensions of the bone from the body of the mandible and maxilla, which support the teeth.. Frenum. Frenum. or frenulum is a narrow band of tissue that connects two structures. . Max. labial . frenum. Basic classification of OMM divided into 3 major Types :-. 1- . Masticatory. mucosa ( . gingiva. and hard palate ).. 2- Lining mucosa (lip , cheek , vestibular fornix , alveolar mucosa , floor of the mouth and soft palate ).. INTRODUCTION. ORAL MUCOSA consists of 3 zones:. 1. . M. asticatory. mucosa-. gingiva. plus over hard palate. 2. Specialized mucosa- over tongue. 3. Oral mucous membrane- in remaining oral cavity. Epithelium (stratified . squamous. epithelium). . Connective tissue.. GINGIVAL EPITHELIUM . can be divided into : . Oral / outer Epithelium . - . faces the oral cavity . Sulcular. Other fibers found in gingiva. E-mail: . a.al-nuaimi@sheffield.ac.uk. . abdulameerh@yahoo.com. . Prof. . Abdulameer. Al-. Nuaimi. S. ublingual . papilla. Periodontal membrane. Deciduous (milk) teeth. Permanent teeth. LECTURE . . 8. أستاذ. . د. رائد عزيز. . The classification presented in this chapter is based on the most recent, internationally accepted, presented and discussed at the 1999 International Workshop for the Classification of the Periodontal Diseases organized by the American Academy of Periodontology (AAP). . Oral mucosa ءارذع .د .ا Basic classification of OMM divided into 3 major Types 1 - Masticatory mucosa ( gingiva and hard palate ). 2 - Lining mucosa (lip ,