Denture Anatomy
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Questions and Answers

What is the approximate distance from the midline that the pterygomandibular raphe passes in front of the fovea palatini?

  • 2mm (correct)
  • 1mm
  • 4mm
  • 3mm
  • What is the origin of the pterygomandibular raphe?

  • Retromolar pad
  • Mandible
  • Fovea palatini
  • Pterygoid hamulus (correct)
  • What is the insertion point of the pterygomandibular raphe?

  • Pterygoid hamulus
  • Fovea palatini
  • Mandible
  • Apex of the retromolar pad (correct)
  • What is the relationship between the pterygomandibular raphe and the fovea palatini?

    <p>The pterygomandibular raphe passes 2mm in front of the fovea palatini</p> Signup and view all the answers

    What structure does the pterygomandibular raphe connect?

    <p>Pterygoid hamulus and retromolar pad</p> Signup and view all the answers

    What part of the maxilla has secondary stress bearing areas?

    <p>Lateral slopes of the palate</p> Signup and view all the answers

    Which of the following is NOT a secondary stress bearing area?

    <p>Mental foramen</p> Signup and view all the answers

    What is the common characteristic of the listed secondary stress bearing areas?

    <p>All are related to the alveolar ridge</p> Signup and view all the answers

    Which bone has secondary stress bearing areas on all its ridge slopes?

    <p>Mandible</p> Signup and view all the answers

    What is the term for the secondary stress bearing areas on the maxilla?

    <p>Rugea</p> Signup and view all the answers

    What kind of tissue is present in the Retromolar Pad Area?

    <p>Loose connective tissue</p> Signup and view all the answers

    What is the purpose of covering the Retromolar Pad Area with the denture?

    <p>To provide support and retention</p> Signup and view all the answers

    What is the shape of the Retromolar Pad Area?

    <p>Pear-shaped</p> Signup and view all the answers

    What is the location of the Retromolar Pad Area in relation to the pterygo mandibular raphe?

    <p>Anterior to the pterygo mandibular raphe</p> Signup and view all the answers

    What is the significance of the Retromolar Pad Area in denture construction?

    <p>It is used as a guide for locating the occlusal plane</p> Signup and view all the answers

    What is the tissue composition of the Retromolar Pad Area, in addition to loose connective tissue?

    <p>Mucous glands, temporal tendon, buccinator, and superior constrictor muscles</p> Signup and view all the answers

    Study Notes

    Midline and Fovea Palatina

    • The midline passes approximately 2mm in front of the fovea palatini.

    Pterygomandibular Raphe

    • A strong, narrow ligamentous band extending from the pterygoid hamulus to the apex of the retromolar pad.

    Secondary Stress Bearing Areas

    • Maxilla:
      • Lateral slopes of the palate
      • Rugae
      • Labial and buccal surfaces of the alveolar ridge
    • Mandible:
      • All ridge slopes

    Relief and Surgical Removal

    • Large relief may require surgical removal.

    Torus Mandibularis

    • Resembles a torus.

    Buccal Shelf

    • Area between the crest of the residual ridge and the external oblique ridge.
    • Formed by compact bone and lies horizontal to masticatory forces.
    • Should be covered to provide support.

    External Oblique Ridge

    • Ridge of dense bone extending from the area of the mental foramen upward and backward to the ramus.
    • Lower denture should cover but not extend beyond it.

    Mental Foramen

    • Located on the external surface of the body of the mandible between the roots of the premolars.
    • Transmits the mental bundle.
    • Extreme bone resorption may cause lower lip numbness; sufficient relief should be done.

    Retromolar Pad Area

    • Pear-shaped area of mucous membrane at the posterior end of the mandibular ridge and anterior to the pterygo-mandibular raphe.
    • Consists of loose connective tissue, mucous glands, temporal tendon, fibers of the buccinator, and superior constrictor and temporalis muscles.
    • Used as a guide for locating the occlusal plane.
    • Should be covered by the denture for retention, support, and to prevent backward displacement.

    Internal Oblique Ridge (Mylohyoid Ridge)

    • Rough, irregular crest of the bone extending downward and forward from the level of the roots of the last molar in the lingual surface.
    • Mylohyoid muscles are attached to this ridge.
    • Extreme bone resorption may cause a sharp, prominent ridge; sufficient relief or surgical removal may be necessary.

    Labial Frenum in Mandible

    • Similar to that of the maxilla, but not as pronounced.

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    Description

    This quiz covers the anatomy of the jaw and mouth related to dentures, including the torus mandibularis, buccal shelf, and external oblique ridge.

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