Flashcards in Exam 1 Deck (73):
Name the 4 tissues of the Periodontium
Functions of the PDL?
1. Supportive; Maintains tooth in socket.
2. Sensory; feeling of pressure & pain
3. Nutritive; provides nutrients to cementum & bone
4. Formative; builds & maintains cementum & alveolar bone of tooth socket.
5. Resorptive; remodel bone in response to pressure.
Spongy, latticelike bone filter between the cortical bone and the alveolar bone proper. Oriented around the tooth to form support for the alveolar bone proper?
Another name for tooth socket?
Small bean shaped structures located on either side of the head, neck, armpits, and groin. They filter out and trap bacteria, fungi, viruses, and other unwanted substances to safely eliminate them from the body?
T/F The lymph from the periodontal tissues is drained to the lymph nodes of the head and neck
Submandibular lymph nodes drain most of the?
Depp Cervical lymph nodes drain the?
palatal gingiva of the maxilla
Submental lymph nodes drain the?
gingiva in the region of the mandibular incisors
Jugulodigastric lymph nodes drain the?
gingiva in the third molar region
Which nerve supplies the periodontium?
Which branch of the Trigeminal Nerve supplies the maxilla?
the second branch
Which branch of the Trigeminal Nerve supplies the Mandible?
the third branch
T/F Cementum does not have its own blood or nutrient supply; it receives its nutrients from the PDL
What is the primary function of the Cementum?
to give attachment to the collagen fibers of the PDL
The end of the PDL fibers that are embedded in the cementum and alveolar one are known as the?
A specialized cell junction that connects two neighbors epithelial cells and their cytoskeletons together?
A specialized cell junction that connects the epithelial cells to the basal lamina?
Functions of the JE?
Attachment and barrier. Provides an attachment between the gingiva and tooth surface providing a seal at the base of the sulcus or pocket. Acts as a barrier between the plaque biofilm and CT of the periodontium
The specialized epithelium that forms the base of the sulcus and joins the gingiva to the tooth surface?
Where is the JE located?
slightly coronal to the cementoenamel junction (CEJ)
The sequence of events that occur during the development of a disease or abnormal condition
Pathogenesis (Disease Progression)
The pathologic deepening of the gingival sulcus is?
Contiuned apical migration of the JE is?
Site of active disease
Increased probing depth of a ginival pocket is the result of which of the following?
What type of bone resorption occurs in an uneven oblique affecting only one tooth?
Most common type of bone loss?
Horizontal Bone Loss
Bone loss that is an uneven reduction in the height of the alveolar bone.
Vertical Bone Loss
Bone Loss, also known as angular bone loss?
Vertical bone loss
A disease site that shows continued apical migration of the junctional epithelium over time?
Active disease site
A disease site that is stable, with the attachment level of the JE remaining at the same level for a period of time?
Inactive disease site
An area of tissue destruction . May involve only one surface of the tooth, such as the distal surface, or several surfaces, or all four surfaces of the tooth?
A disease site
Occurs when there is horizontal boss loss?
Occurs when there is vertical bone loss?
A mesh-like material that surrounds the cells. It is like scaffolding for the cells.
What does extracellular matrix do?
helps hold cells together and provides a framework within where cells can migrate and interact w/ one another
Probing depth in sulcus for healthy tissues?
Sulcus probing depth in gingivitis?
May be greater than 3 mm due to swelling of the tissues
Pocket depth in periodontitis?
4 mm or greater
May be pus evident on probing
What separates the epithelium from the connective tissue?
Wavy Tissue Boundary
T/F the epithelium does not have its own blood supply; blood vessels are carried close to the epithelium in the connective tissue papillae
Fibers that encircle the tooth in a ring-like manner coronal to the alveolar crest and are not attached to the cementum?
Abscess of the periodontium?
Changes in color, contour, and consistency of the gingival tissues?
A gingivitis that lasts for a short period of time. Usually characterized by fluid in the gingiva connective tissues that result in swollen gingiva
A gingivitis that lasts for months or years. Gingival tissues are enlarged and fibrotic (leathery) in consistency
Clinical signs of gingivitis?
Clinical signs of periodontitis
Pink or purplish
Swollen or fibrotic
A thin mat of extra cellular matrix secreted by the epithelial cells
Have nuclei and acts as a cushion against mechanical stress and wear?
Nonkeratinized epithelial cells
Have no nuclei and form a tough, resistant layer on the surface of the skin ?
Keratinization epithelial cells
A cell to cell connection ?
A cel to basal lamina connection?
T/F the interdental gingiva prevents food from becoming packed between the teeth during mastication
T/F the col is not present if the adjacent teeth are not in contact.
Located between the facial and lingual papillae and extends beneath the contact area of the two adjacent teeth?
A layer of soft connective tissue that covers the root of the tooth and attaches it to the bone of the tooth socket?
A thin layer of hard, mineralized connective tissue that covers the surface of the tooth root?
Composed of a thin outer layer of epithelium and an underlying core of connective tissue?
A layer of compact bone that forms the hard, outside wall of the mandible ad maxilla on the facial and lingual aspects?
T/F The cortical bone is think in the incisor, canine, and premolars regions; cortical bone is thicker in molar region
T/F the cortical bone will not show up in a radiograph; only the cancellous bone and the alveolar bone proper can be seen on a radiograph
T/F the motor function of the trigeminal nerve is essential for the act of chewing
Major artery for maxillary periodontal tissues?
Superior alveolar arteries
Major arteries for the mandibular periodontal tissues?
Inferior alveolar artery
Smallest structural unit of living matter capable of functioning independently?
Four basic types of tissues are?
The tissue that makes up the outer surface of the body (skin) and lines the body cavities such as the mouth, stomach, and intestines (mucosa)?
A type of epithelium that comprises flat cells arranged in several layers?
Stratified squamous epithelium
T/F Keratinization epithelium is found on the palms of the hands and soles of the feet while Nonkeratinized epithelial cells are found as the mucosal lining of the cheeks-mobility to speak, chew and make facial expressions
Fills the space between the tissues and organs in the body. It binds and supports other tissues?
T/F cementum, dentin, alveolar bone and the pulp are all dental tissues that are specialized forms for connective tissue except enamel. Enamel is an epithelial tissue