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口腔診斷學

口腔診斷學. Anatomic Radiopacities of the Jawbones. 顎骨之 X 光不透過解剖影像. 陳玉昆助理教授 : 高雄醫學大學 口腔病理科 07-3121101~2755 yukkwa@kmu.edu.tw. 學 習 目 標. Understanding: 1. 顎骨之 X 光不透過解剖影像. 參考資料. References:.

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口腔診斷學

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  1. 口腔診斷學 Anatomic Radiopacities of the Jawbones 顎骨之X光不透過解剖影像 陳玉昆助理教授: 高雄醫學大學 口腔病理科 07-3121101~2755 yukkwa@kmu.edu.tw

  2. 學 習 目 標 Understanding: 1. 顎骨之X光不透過解剖影像

  3. 參考資料 References: • Wood, Goaz. Differential diagnosis of oral lesions. Mosby, 3rd ed., Chapter 24, p. 555-562 • Eric Whaites. Essentials of dental radiography and radiology, 4th edition, 2007, pp.6, 135, 257, 278, 309, 311-21, 355 • Tantanapornkul W et al. Correlation of darkening of impacted mandibular third molar root on digital panoramic images with cone beam computed tomography findings Dentomaxillofac 2009;38:11-6 • http//www.conebeam.com

  4. Anatomic Radiopacities of the Jaws Normal anatomical structures Radiopacity Artifactual Pathological Possible causes include: • A dental anomaly • A bony lesion • A soft tissue calcification • A foreign body Ref. 2

  5. Anatomic Radiopacities of the Jaws (1) Enamel Dentine Cementum Periodontal ligament space Lamina dura Cervical burn out Ref. 1

  6. Anatomic Radiopacities of the Jaws (1-1) Ref. 2

  7. Anatomic Radiopacities of the Jaws (1-2) Normal distance from CEJ to crestal margin : 2-3mm Ref. 2

  8. Side view Plan view Anatomic Radiopacities of the Jaws (1-3) Cervical burnout Ref. 2

  9. Anatomic Radiopacities of the Jaws (2) Tooth crypt Mandibular canal Ref. 1

  10. Anatomic Radiopacities of the Jaws (2-1-1) Mesioangular Vertical Distoangular Horizontal Inverted Transverse Ref. 2

  11. Anatomic Radiopacities of the Jaws (2-1-2) Ref. 2

  12. Anatomic Radiopacities of the Jaws (2-2) Ref. 2

  13. Pericoronal infection Anatomic Radiopacities of the Jaws (2-3) Ref. 2

  14. Pericoronal infection Anatomic Radiopacities of the Jaws (2-4) Indentation of upper margin of inferior canal Ref. 2

  15. Anatomic Radiopacities of the Jaws (2-5) Radiolucent band across the root: narrowed canal Radiolucent band across the root: a change in direction Ref. 2

  16. Pericoronal infection Anatomic Radiopacities of the Jaws (2-6) Buccal aspect Distal aspect Radiolucent across root apex Ref. 2

  17. Anatomic Radiopacities of the Jaws (2-6-1) Panorex:unerupted left upper canine Spiral CT (cross section):buccal unerupted left upper canine (2mm slices) Ref. 2

  18. Anatomic Radiopacities of the Jaws (2-6-2) CBCT: mesiodens Ref. 2

  19. Anatomic Radiopacities of the Jaws (2-6-3) Panorex: mesial root darkening; no root grooving CBCT: thinning lingual cortex by root & ID Ref. 3

  20. Anatomic Radiopacities of the Jaws (2-6-4) Panorex: root darkening; no root grooving CBCT: perforation of lingual cortex by root & ID Ref. 3

  21. Anatomic Radiopacities of the Jaws (2-6-5) Panorex: without root darkening CBCT: root grooving Ref. 3

  22. Anatomic Radiopacities of the Jaws (2-6-6) Panorex: root seems to approximate ID CBCT: lingual cortex perforation without root approximates ID Ref. 3

  23. Anatomic Radiopacities of the Jaws (2-6-7) CBCT: lower 3rd molar with root approximates ID Ref. 2

  24. Anatomic Radiopacities of the Jaws (2-6-8) CBCT: lower 3rd molar with root approximates ID Ref. 2

  25. Anatomic Radiopacities of the Jaws (2-6-9) Impacted 3rd molar Ref. 5

  26. Anatomic Radiopacities of the Jaws (2-6-10) Impacted 3rd molar Ref. 5

  27. Anatomic Radiopacities of the Jaws (2-6-11) Impacted molar Ref. 5

  28. Anatomic Radiopacities of the Jaws (2-6-12) Impacted molar Ref. 5

  29. Anatomic Radiopacities of the Jaws (2-6-13) Impacted maxillary cuspid Ref. 5

  30. Anatomic Radiopacities of the Jaws (2-6-14) Impacted maxillary cuspid Ref. 5

  31. Anatomic Radiopacities of the Jaws (2-6-15) Impacted #22 Impacted #22simulated extraction Ref. 5

  32. Anatomic Radiopacities of the Jaws (2-6-16) Impacted #22 Ref. 5

  33. Anatomic Radiopacities of the Jaws (2-6-17) Impacted left canine Ref. 5

  34. Anatomic Radiopacities of the Jaws (2-6-18) Impacted left canine Ref. 5

  35. Anatomic Radiopacities of the Jaws (2-6-19) Mandibular impacted tooth and nerve localization Ref. 5

  36. Anatomic Radiopacities of the Jaws (2-6-20) Mandibular impacted tooth and nerve localization Ref. 5

  37. Left Right Front Opposite Buccal Same Lingual Anatomic Radiopacities of the Jaws (2-7) Object moves in same direction Principle of parallax: the apparent displacement of an object due to different positions of the observer SLOB (近方) (遠方) Ref. 2

  38. Position 2 Position 1 Same Lingual Anatomic Radiopacities of the Jaws (2-8) Position 2 Position 1 (遠方-palatal side) Ref. 2

  39. Unerupted mesiodens Upper occlusal Panorex Crown portion (遠方-palatal side) SLOB Apex portion Opposite Buccal (近方-labial side) Same Lingual Anatomic Radiopacities of the Jaws (2-9) Ref. 2

  40. Anatomic Radiopacities of the Jaws (2-10) Not recommended due to high radiation dose Vertex occlusal Ref. 2

  41. Anatomic Radiopacities of the Jaws (3) Nasal fossa Anterior nasal spine Incisive canal Incisive canal cyst Ref. 1

  42. Anatomic Radiopacities of the Jaws (4) Nasal fossa Anterior nasal spine Soft tissue shadow of nose Ref. 1

  43. Anatomic Radiopacities of the Jaws (5) Anterior nasal spine Inferior turbinates Ref. 1

  44. Anatomic Radiopacities of the Jaws (6) Maxillary sinus Y Medial wall of sinus meets the lateral wall of nasal chamber Ref. 1

  45. Anatomic Radiopacities of the Jaws (7) Zygoma Maxillary sinus floor- flat Ref. 1

  46. Anatomic Radiopacities of the Jaws (8) Maxillary sinus floor- scalloped Ref. 1

  47. Anatomic Radiopacities of the Jaws (9) Zygomatic bone Zygomatic process Tuberosity- soft tissue shadow Ref. 1

  48. Anatomic Radiopacities of the Jaws (10) Lateral pterygoid plate Hamular process Ref. 1

  49. Anatomic Radiopacities of the Jaws (11) Coronoid porcess Ref. 1

  50. Anatomic Radiopacities of the Jaws (12) External oblique ridge Mylohyoid ridge (internal oblique ridge) Ref. 1

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