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76 Cards in this Set
- Front
- Back
Which of the following is Not one of the tissues of the periodontium? |
b. Body of the mandible |
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T/F Cementum is NOT necessary to the health of the periodontium because the underlying dentin will protect the root if the cementum is removed by toothbrushing abrasion or from dental procedures? |
False |
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Which tissue of the periodontium may be pigmented in dark skinned individuals? |
Attached Gingiva |
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T/F: Healthy gingival tissue ALWAYS has a dimpled appearance known as stippling? |
False |
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T/F One function of the attached gingiva is to prevent the free gingiva from being pulled away from the tooth when tension is applied to the alveolar mucosa? |
True |
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What forms the base of the gingival sulcus? |
Junctional Epithelium |
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On the tooth side, the periodontal ligament fibers are embedded in which of the following structres? |
Cementum |
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T/F Cementum does not have its own blood supply; it receives its nutrients from the periodontal ligament? |
True |
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Which of the following is the thin layer of bone that lines the tooth socket? |
Alveolar bone proper |
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Is the functional system of tissues that surrounds the teeth and attaches them to the jaw bone? |
Periodontium |
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The tissues of the periodontium include? |
Gingiva, PDL, Cementum and Alveolar bone |
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The gingiva is divided into four anatomical areas which are? |
Free gingiva Gingival sulcus Interdental gingiva Attached gingiva |
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What is the coronal boundary of the gingiva ? |
Gingival Margin |
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What is the apical boundary of the gingiva? |
Alveolar mucosa |
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Function of the Attached Gingiva? |
Allows the gingival tissue to withstand the mechanical forces created during activities such as mastication, speaking, and toothbrushing |
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A valley like depression in the portion of the interdental gingiva that lies directly apical to the contact area? |
Col |
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T/F Little or no fluid is found in the healthy gingival sulcus, but the fluid flow increases in the presence of dental plaque biofilm and the resulting gingival inflammation. |
True |
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Is a layer of soft connective tissue that covers the root of the tooth and attaches it to the bone of the tooth socket ? |
PDL |
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What type of tissue is the PDL composed of? |
Mainly of dense fiberous connective tissue |
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What are the five functions of the PDL? |
1)Supportive function 2)Sensory function; pressure and pain 3)Nutritive function; provides nutrients to the cementum and bone 4)Formative function 5)Resorption function |
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There are two main types of cementum, which are? |
Acellular and Cellular |
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What is the thin layer of bone that lines the socket to surround the root of the tooth? |
Alveolar bone proper ( or cribriform plate) |
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What is a layer of compact bone that forms the hard, outside wall of the mandible and maxilla on the facial and lingual aspect; surrounds the alveolar bone proper and gives support to the socket? |
Cortical bone |
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What is the most coronal portion of the alveolar process? |
Alveolar Crest |
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In health, the alveolar crest is located ___ to ___ mm apical to the CEJ of the teeth |
1-2mm |
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What is the latticelike bone that fills the interior portion of the alveolar process ? |
Cancellous Bone |
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Is oriented around the tooth to form support for the alveolar bone proper? |
Cancellous Bone |
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what is a layer of connective soft tissue covering the outer surface of the bone? |
Periostium |
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Which of the following tissue serves as a covering tissue for the outer services of the body and a lining tissue for the body cavities such as the mouth, stomach, and intestines? |
Epithelial Tissue |
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Which of the following tissue fills the spaces between the tissues and organs of the body? |
Connective Tissue |
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Which of these epithelial layer is comprised of cells with nuclei that act as a cushion against mechanical stress and wear? |
Nonkeratinized Layer |
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Epithelial cell junctions are cellular structures that can attach: |
An epithelial cell to a neighboring epithelial cell; an epithelial cell to a basal lamina |
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The function of a cell junction is to: |
Allow cells to bind together to function as a strong structural unit. |
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A cell junction that connects an epithelial basal cell to the basal lamina is termed? |
Hemidesmosome |
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T/F In most places in the body, the epithelium meets the connective tissue in a wavy, uneven junction. |
True |
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The deep extensions of epithelium that reach down into the connective tissue are termed: |
Epithelial Ridges |
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T/F Connective tissue is comprised of a gel like substance, fibers, and few cells. |
True |
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In the junctional epithelium, epithelial cell attach to neighboring epithelial via: |
Desmosomes |
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The junctional epithelium attaches to the tooth surface via the: |
Hemidesmosomes and the internal basal lamina |
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What is a group of interconnected cells that perform a similar function within an organism? |
Tissue |
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The tissues of the body consist of ______ and __________. |
Cells and extracellular matrix |
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What are the four basic types of tissue? |
Epithelial, connective, nerve, and muscle |
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What is a meshlike material that surrounds the cells? |
Extracellular Matrix |
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The extracellular matrix consists of ground substance and fibers; the ground substance composed of? |
A gel like material that fills the space between the cells. |
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Which tissue is more plentiful of extracellular matrix than cells? |
Connective tissue |
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Which tissue has less of the extracellular matrix but has more cells? |
Epithelial tissue |
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The skin and mucosa of the oral cavity are made up of: |
Stratified squamous epithelium |
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A portion of the gingiva that fills the area between two adjacent teeth APICAL to the contact area? |
Interdental Gingiva |
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In epithelial tissue, the thin mat of extracellular tissue is termed? |
Basal Lamina |
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Form a tough, resistant layer on the surface of the skin; have no nuclei? |
Keratinized epithelial cells |
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Which tissue contain no blood vessels, nourishment is received from blood vessels contained in the underlying connective tiisue? |
Epithelial tissue |
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What holds the epithelial tissue together? |
Cell junctions |
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How do epithelial and connective tissue meet? |
Tissue boundary either a wavy or a smooth boundary |
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The epithelial cells of the junctional epithelium are connected by? |
Desmosomes |
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What is the function of the Junctional epithelium? |
The JE attaches the gingiva to the enamel and/or the cementum of the tooth. |
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The extracellular martix of the JE consists of an ____ and ____ basal lamina. |
Internal and external |
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What are the principle fiber groups of the PDL? |
Alveolar crest fibers group, Horiztonal, Oblique, Apical, Interradicular |
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This fiber group extends from the cervical cementum, running downward in a diagonal direction, to the alveolar crest. This fiber group resists Horizontal movements to the tooth. |
Alveolar crest fibers group |
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Extend from the periosteum of the alveolar crest into the gingiva connective tissue. ( Part of the supragingival fiber bundles) |
Alveologingival fibers |
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These fiber bundles attach the gingiva to the bone. ( Part of the supragingival fiber bundles) |
Alveologingival fibers |
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Encircle the tooth in a ringlike manner coronal to the alveolar crest and are not attached to the cementum of the tooth.( Part of the supragingival fiber bundles) |
Circular fibers |
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These fiber bundles connect adjacent teeth to one another..( Part of the supragingival fiber bundles) |
Circular fibers |
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These fibers act to attach the gingiva to the teeth? |
Dentogingival fibers |
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Extend laterally from the periosteum of the alveolar bone. These fibers attach the gingiva to the bone. |
Periostogingival fibers |
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Extend in a mesiodistal direction along the entire dental arch and around the last molars in the arch, These fiber bundles link adjacent teeth into a dental arch unit? |
Intergingival fibers |
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Encircle several teeth. These fiber groups link adjacent teeth into a dental arch unit? |
Intercircular fibers |
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Are located in the papillae coronal to (above) the transseptal fiber bundles.These fiber groups connect the oral and vestibular interdental papillae of posterior teeth? |
Interpapillary fibers |
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Extend from the cementum near the CEJ and run horizontally between adjacent teeth. These fiber bundles link adjacent teeth into a dental arch unit. |
Transgingival fibers |
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Located apical to the alveolar crest fibers. They extend from the cementum to the bone at right angles to the long axis of the root.This fiber group resists horizontal PRESSURE against the crown of the tooth. |
Horizontal fiber group |
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Located apical to the horizontal group. They extend from the cementum to the bone, running in a diagonal direction. This fiber group risists vertical pressure that threaten to drive the root into its socket. |
Oblique fiber group |
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Extend from the apex of the tooth to the bone. This fiber group secures the tooth in its socket and resists forces that might lift the tooth out of the socket. |
Apical fiber group |
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Present only in multirooted teeth, extend from the cementum in the furcation area of the tooth to the interradicular septum of the alveolar bone. These fiber groups help stabilize the tooth in its socket. |
Interradicular fiber group |
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The ends of the PDL fibers that are embedded in the cementum and alveolar bone are known as ? |
Sharpey's fibers |
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When one of two adjacent teeth |
Angular |
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The alveolar bone proper is the thin layer of dense bone that lines a normal tooth socket. On |
Lamina Dura |
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On a radiograph, widening of the periodontal ligament space is an indication of |
Tooth mobility |