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Maxillary and mandibular anatomical land marks

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Maxillary and mandibular anatomical land marks

  1. 1. LANDMARKS OF COMPLETE DENTURE FOUNDATION AREA By Dr Osama Askar BDS. MSC. PHD. Faculty of Dentistry Mansoura University,
  2. 2. WHY WE SHOULD KNOW THAT? To have the knowledge about the nature of denture supporting and limiting structures, which allow me to construct a complete denture with maximum stability, retention and support. That denture can give me maximum comfort, function, esthetic and preservation of remaining structures
  3. 3. INTRA ORAL MAXILLARY ANATOMICAL LAND MARKS 1.SUPPORTING STRUCTURES 2.RELIEF STRUCTURES 3.LIMITING STRUCTURES
  4. 4. CRITERIA OF STRESS BEARING AREA 1.Formed from dense bone with its trabeculae oriented perpendicular to occlusal forces 2.Even thickness submucosa with structures act as cushion (muscle fibers, salivary gland, fat tissue) and firmly attached to bone 3.Covered with moderate and even thickness of keratenized stratified squamous cell masticatory mucosa. 4.To be oriented at wright angle to occlusal forces
  5. 5. MAXILLARY ANATOMICAL LANDMARKS
  6. 6. 1 supporting structures • Hard palate • Rougae area • Maxillary tuberosity • Residual alveolar ridge 2 Relief areas • Incisive papilla • Median palatine raphae • Torus palatinus • Foveae palatine 3 Limiting structures • Labial frenum • Labial vestibule • Buccal frenum • Buccal vestibule • Hamular notch • Soft palate, vibrating line and posterior palatal seal
  7. 7. Hard palate and palatine vault
  8. 8. Flat shaped Palatal Vault Shapes U - shaped V - shaped
  9. 9. Oval shaped Square shaped U - shaped V - shaped Residual ridge arch formes
  10. 10. Maxillary Tuberosity
  11. 11. Palatine rugae 1 ry bearingFlappyinclined
  12. 12. Incisive papilla
  13. 13. Prosthetic significance of incisive papilla
  14. 14. Median Palatine raphe
  15. 15. Torus Palatinus
  16. 16. Fovea Palatinae
  17. 17. Limiting structures • Labial frenum • Labial vestibule • Buccal frenum • Buccal vestibule • Hamular notch • Soft palate, vibrating line and posterior palatal seal
  18. 18. Labial Frenum
  19. 19. Buccal Frenum
  20. 20. Hamular notch
  21. 21. Soft palate vibrating line and PPS area
  22. 22. Arbitrary Determination of PPS area
  23. 23. MANDIBULAR ANATOMICAL LANDMARKS
  24. 24. 1 supporting structures • Buccal shelf area • Residual alveolar ridge • External oblique ridge 2 Relief areas • Mental foramen area • Internal oblique ridge • Torus Mandibularis • Genial tubercles 3 Limiting structures • Labial frenum • Labial vestibule • Buccal frenum • Buccal vestibule • Retromolar pad • Lingual frenum • Lingual vestibule (sublingual cresent area, mylohyoid area, retromylohyoid area or lingual pouch)
  25. 25. Residual alveolar ridge
  26. 26. Buccal shelf of bone
  27. 27. Retromolar Pad
  28. 28. Significance of Retromolar pad
  29. 29. Mental Foramen
  30. 30. Internal oblique ridge
  31. 31. Torus Mandibularis
  32. 32. Genial tubercle
  33. 33. LIMITING STRUCTURES OF LOWER DENTURE • Labial frenum • Labial vestibule • Buccal frenum • Buccal vestibule • Masseter influencing area • Retromolar pad • Lingual pouch (alveolingual sulcus) from lingual frenum to retromylohyoid Curtin consists of 1Sublingual cresent area 2 Mylohyoid area 3Retromylohyoid area or lingual pouch
  34. 34. Retromylohyoid Curtin

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