Podcast Beta
Questions and Answers
What is the approximate distance from the midline that the pterygomandibular raphe passes in front of the fovea palatini?
What is the origin of the pterygomandibular raphe?
What is the insertion point of the pterygomandibular raphe?
What is the relationship between the pterygomandibular raphe and the fovea palatini?
Signup and view all the answers
What structure does the pterygomandibular raphe connect?
Signup and view all the answers
What part of the maxilla has secondary stress bearing areas?
Signup and view all the answers
Which of the following is NOT a secondary stress bearing area?
Signup and view all the answers
What is the common characteristic of the listed secondary stress bearing areas?
Signup and view all the answers
Which bone has secondary stress bearing areas on all its ridge slopes?
Signup and view all the answers
What is the term for the secondary stress bearing areas on the maxilla?
Signup and view all the answers
What kind of tissue is present in the Retromolar Pad Area?
Signup and view all the answers
What is the purpose of covering the Retromolar Pad Area with the denture?
Signup and view all the answers
What is the shape of the Retromolar Pad Area?
Signup and view all the answers
What is the location of the Retromolar Pad Area in relation to the pterygo mandibular raphe?
Signup and view all the answers
What is the significance of the Retromolar Pad Area in denture construction?
Signup and view all the answers
What is the tissue composition of the Retromolar Pad Area, in addition to loose connective tissue?
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.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz covers the anatomy of the jaw and mouth related to dentures, including the torus mandibularis, buccal shelf, and external oblique ridge.
