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21 Cards in this Set
- Front
- Back
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What foundation of dentures is called?
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Basal seat: made up of bone covered by mucosa and submucosa
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What are the three types of mucosa?
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-Masticatory mucosa: cover crest of alveolar ridge and hard palate
-Lining mucosa: covers mucous membrane not firmly attached to periosteum of bone -Specialized mucosa: covers dorsum of tongue and contains specialized papilla and cells for various fx. |
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What is the main support for the maxillary denture?
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Bone of the two maxillae (palatine processes) and the palatine bone
Note: W/ thin soft tissue, its a RELIEF AREA in the denture to prevent rocking of the denture or soreness by denture |
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What is the primary stress bearing areas for hte maxillary denture.
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Residual alveolar ridges: alveolar processes remaining after extraction of natural teeth
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What provides the secondary stress-bearing area?
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Rugae: can resist forward movement of maxillary denture.
Note: Made up of irregular shaped rolls of fibrous CT and adipose tissue in anterior palate. -This area should be distorted during impression or it can rebound and dislodge denture |
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Where is glandular region?
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-Located in the posterior part of maxilla.
-It should be cover by denture to enhance retention but doesn't have enough firmnes for support of the denture |
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Describe the Incisive Papilla?
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- Covers the incisive foramen where the nasopalatine nerve and blood vessels are present.
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Why must the incisive papilla be avoided?
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-This area needs relief in the denture to avoid any stimulation of the nerve or constriction of blood vessels.
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What is a hard region midway between the anterior portion of maxilla and the tuberosity of the maxilla.
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-Zygomatic Process (Malar process): It requires relief to enhance retention and eliminate soreness of the tissue by denture
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What is in the posterior portion of the residual alveolar ridge?
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Maxillary Tuberosity
-Note: May require surgical reduction if extends too inferiorly towards the mandible |
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What is a labial frenum?
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-Is a fold of mucous membrane attached to the labial side of the alveolar ridge and fans out into the mucous membrane of the upper lip. It does not contain any muscle fibers
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Buccal frenum is a fold(s) of mucous membrane with attachments of what?
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-Levator anguli oris (caninus) muscle
-Obicularis oris -Buccinator muscles Note: Located between labial vestibule and buccal vestibule |
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-What is the main muscle of the lips.
What pulls the buccal frenum backwards? |
-Orbicularis oris
-Orbicularis oris Note: Fibers of the muslce run horizontally and connect with muscle fibers of the buccinator. |
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Describe the buccinator muscle?
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-Broad band of muscle forming the entire wall of the cheek from the corner of the mouth and stretching posteriorly along the outer surface of the maxilla and the mandible until it reaches the ramus.
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When the buccinator reaches the ramus from maxilla and mandible where does it go next?
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It passes to the lingual surfaces of ramus and joins the superior constrictor muscle at the pterygomandibular raphe.
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What fibers attach to the buccal frenum and tend to pull the frenum in an upward motion?
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Levator Anguli oris
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What arises from the canine fossa immediately below the infraorbtial foramen and descends inferioly to attach to the corner of the mouth?
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Levator Angulioris
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What is the labial vestibule?
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Is the space between the labial frenum and the buccal frena.
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What is the space extending from the buccal frenum to the hamular (pterygomaxillary) notch).
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-Buccal Vestibule
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What affect the size of the buccal vestibule?
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-Contraction of the buccinator muslce
-Position of the mandible -Size of the residual alveolar ridge |
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What anatomy of the mandible passes into the buccal vestibule space during excurive movments?
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-Coronoid process
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