Perio final Flashcards
Tissues of the periodontium
Gingiva, Cementum, periodontal ligament, alveolar bone
Gingiva
Tissue that covers the cervical portions of the teeth and the alveolar processes of the jaws
periodontal ligament
Fibers that surround the root of the tooth. One side attaches to bone and the other side attaches to cementum. Soft connective tissue that covers the root of a tooth. Dense fibrous connective tissue
Cementum
Thin layer of mineralized tissue that covers the root of the tooth
Alveolar bone
Bone that surrounds the roots of teeth. It forms the bony socket that supports and protects the root of the teeth
Where is the gingival margin located
Coronal to the CEJ of each tooth and attaches to the tooth by junctional epithelium
Four anatomical areas that the gingiva is divided into
Free gingiva, ginigival sulcus, interdental gingiva, attached gingiva
Free gingival groove
Shallow linear depression that separates the free and attached gingiva. Rarely visible
Mucogingival junction
Clinically visible boundary where the pink attached gingiva meets the red, shiny alveolar mucosa
Attached gingiva
Continuous with free gingiva; widest at in the incisor and molar region. Keratinized tightly connected to the cementum and alveolar bone. Allows gingival tissue to withstand mechanical forces. Dimpled or stippled
5 functions of the PDL
Support, sensory,Nutrition, Formative, Remodeling
What characteristic of cementum makes it possible for teeth to be moved during ortho treatment
Resistance to resorption
Acellular cementum
Forms before teeth are in occlusion
Cellular cementum
Forms after the teeth have reached occlusion
Where does cementum receive its nutrients from
PDL
sharpey fibers
Ends of the periodontal ligament fibers that are embedded in the cementum and alveolar bone
What can happen if teeth do not erupt
The alveolar bone does not develop
What type of epithelium makes up the oral cavity
Stratified squamous epithelium; functions well in a wet environment
Fibroblasts
Cells that form Extracellular matrix and secrete into the intercellular spaces
Macrophages and neutrophils
“Cell eaters” devour dying cells and microorganisms that invade the body
Lymphocytes
Cells that play a major role in the immune response
Specialized forms of connective tissue
Cementum, dentin, alveolar bone, pulp
Free gingiva
Unattached portion of the gingiva that surrounds the tooth
Gingival sulcus
Space between the free gingiva and the tooth surface