1. Anatomic Radiopacities of the Jawbones
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
~2755 1

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
Eric Whaites. Essentials of dental radiography and radiology, 4th edition, 2007, pp.6, 135, 257, 278, 309, , 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
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4. Anatomic Radiopacities
of the Jaws
Possible causes include:
Normal anatomical structures
Radiopacity
A dental anomaly
A bony lesion
A soft tissue calcification
A foreign body
Artifactual
Pathological
Ref. 2

5. Anatomic Radiopacities
of the Jaws (1)
Enamel
Dentine
Cementum
Lamina dura
Periodontal ligament space
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. Anatomic Radiopacities
of the Jaws (1-3)
Cervical
burnout
Side view
Plan view
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. Anatomic Radiopacities
of the Jaws (2-3)
Pericoronal infection
Ref. 2

14. Anatomic Radiopacities
of the Jaws (2-4)
Indentation of
upper margin
of inferior canal
Pericoronal infection
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. Anatomic Radiopacities
of the Jaws (2-6)
Pericoronal infection
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 #22 simulated 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. Anatomic Radiopacities
of the Jaws (2-7)
Object moves in same direction
Front
Right
Left
Principle of parallax: the apparent displacement of
an object due to different positions of the observer
Same Lingual
Opposite Buccal
SLOB
(遠方)
(近方)
Ref. 2

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

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

51. Anatomic Radiopacities
of the Jaws (13)
Mental
ridge
Ref. 1

52. Anatomic Radiopacities
of the Jaws (14)
Lingual
foramen-
radiopque ring
Genital tubercle-
occlusal view
Ref. 1

53. Anatomic Radiopacities
of the Jaws (15)
Ala of nose
Ala of nose-
edentulous jaw
Ref. 1

54. Anatomic Radiopacities
of the Jaws (16)
Nasal labial
fold
Ref. 1

55. Summaries
明白顎骨之X光不透過解剖影像。