dental anatomy lab Permanent Mandibular right first molar carving steps

1. Dental Anatomy
Permanent Mandibular Right First Molar

2. Contents
* Table.
* Carving
A- Kit.
B- Steps.
* Finishing Steps.

3. Table 12-1

4. Carving Kit
1- Towel.
2- Le crone.
3- Wax knife.
4- Plaster Knife.
5- Brush.
6- wax block.
7- ruler .
4
3
2
1
5 6
7

5. Carving Steps

6. Note :
Each 1 mm in table
=
1 mm in the ruler

7. Buccal Surface

8. 1- Surface name
• Buccal because tooth Posterior.

9. 2- Midline
• To identify the mesial and distal
surfaces.

10. 3- Measurements :
(Table 12-1)
• A - Length of crown = 7.5 mm.

11. 4- Cervical line
• To identify the crown and root

12. 5- Thirds division
• Cervico- Occlusal =
Cervical= 2.5 mm.
Middle= 2.5 mm.
Occlusal= 2.5 mm.

13. • B- Mesiodistal diameter of crown at
cervical line = 9 mm.
• 4.5 mm (Mesial).
• 4.5 mm (Distal).
6- Measurements :
(Table 12-1)

14. • C- Mesiodistal diameter of crown = 11 mm.
• 5.5 mm (Mesial) contact area at junction
between occlusal and middle third.
6- Measurements :
(Table 12-1)

15. • C- Mesiodistal diameter of crown = 11 mm.
• 5.5 mm (Distal) contact area at the middle
of middle third.
6- Measurements :
(Table 12-1)

16. 7- Draw the surface.
• Connect between the points
• Mesial outline .

17. • Connect between the points
• Distal outline .
7- Draw the surface.

18. 8- Deeping of cervical line
• By Le crone along all surfaces
Buccal.
Mesial.
Distal.
Lingual.

19. 9- Remove wax
• Start from mesial surfaces.

20. 9- Remove wax
• Then distal surface.

21. Final Buccal outline

22. Mesial Surface

23. 1- Surface name
• Mesial surface.

24. 2- Midline
• To identify the Buccal and Lingual
surfaces.

25. • A- Length of crown = 7.5 mm.
3- Measurements :
(Table 12-1)

26. 4- Cervical line
• To identify the crown and root.

27. 5- Thirds division
• Cervico- Occlusal =
Cervical= 2.5 mm.
Middle= 2.5 mm.
Occlusal= 2.5 mm.

28. • B- Buccolingual diameter of crown at
cervical line = 9 mm.
• 4.5 mm (Buccal).
• 4.5 mm ( Lingual).
6- Measurements :
(Table 12-1)

29. • C- Buccolingual diameter of crown
= 10.5 mm.
• Buccal .. 5.25 mm (crest of curvature at
center of cervical third).
6- Measurements :
(Table 12-1)

30. • C- Buccolingual diameter of crown
= 10.5 mm.
• Lingual .. 5.25 mm (crest of curvature
within middle third).
6- Measurements :
(Table 12-1)

31. • Intercuspal distance = 5 mm .
• 2.5 mm (Buccal).
• 2.5 mm (Lingual).

32. 7- Draw the surface.
• Connect between the points
• Buccal outline.

33. • Connect between the points
• Lingual outline.
7- Draw the surface.

34. 8- Deeping of cervical line
• By Le crone long all surfaces
;
1. Buccal.
2. Mesial.
3. Distal.
4. Lingual.

35. 9- Remove wax
• Start from Buccal outline.

36. 9- Remove wax
• Then Lingual outline.

37. Final Mesial Surface

38. Finishing Steps

39. 1- Cervical Line
• Measure 1 mm from cervical line toward
root.

40. 1- Cervical Line
• Draw line along all
surfaces.

41. 1- Cervical Line
• Deepening the line along
all surfaces.

42. 1- Cervical Line • Strat Removing wax from the line angles of root part.

43. • Remove wax from root
along all surfaces.
• Buccal.
• Mesial.
• Lingual.
• Distal
1- Cervical Line

44. 1- Cervical Line • In root part under geometrical cervical line clari
fi
ng it
by spoon end of Le crone along all surfaces.

45. 2- Roundation
• Carve 0.5 mm from all
the line angles
• Mesiobuccal.
• Distobuccal.
• Mesiolingual.
• Distolingual.

46. • Carve 0.5 mm to clarify the steps
near the root.

47. Roundation to all line angles.
• Carve 0.5 mm or less.

48. • Occlusal …
• Hexagonal occlusal outline.
• Mesiodistal measurement larger than
buccolingual measurement.
• Crown converge lingually from contact area.
3- Landmarks of each surfaces.

49. • Occlusal …
• Draw line from center of buccal to the
center of occlusal surface.
• Draw line from center of lingual to the
center of occlusal surface.
3- Landmarks of each surfaces.

50. • Occlusal …
• Carve Grooves:
1. Central developmental.
2. Mesiobuccal
3. Distobuccal ..
4. Lingual.
3- Landmarks of each surfaces.

51. • Occlusal …
• Carve Grooves:
1. Central developmental.
2. Mesiobuccal
3. Distobuccal ..
4. Lingual.
3- Landmarks of each surfaces.

52. • Occlusal …
• Carve Grooves:
1. Central developmental.
2. Mesiobuccal
3. Distobuccal ..
4. Lingual.
3- Landmarks of each surfaces.

53. • Occlusal …
• Carve Grooves:
1. Central developmental.
2. Mesiobuccal
3. Distobuccal ..
4. Lingual.
3- Landmarks of each surfaces.

54. • Occlusal …
• Carve Fossae:
1. Central (Major): carve it later.
2. Mesial triangular (Minor).
3. Distal triangular (Minor).
3- Landmarks of each surfaces.

55. • Occlusal …
• Carve Fossae:
1. Central (Major).
2. Mesial triangular (Minor).
3. Distal triangular (Minor).
3- Landmarks of each surfaces.

56. • Occlusal …
• Carve Fossae:
1. Central (Major).
2. Mesial triangular (Minor).
3. Distal triangular (Minor).
3- Landmarks of each surfaces.

57. • Occlusal …
• Carve each cusp independently.
1. Mesiobuccal .
2. Distobuccal .
3. Distolingual .
4. Mesiolingual.
5. Distal (smallest).
• Each cusp has two cusp ridges.
3- Landmarks of each surfaces.

58. • Occlusal …
• Carve each cusp independently.
1. Mesiobuccal .
2. Distobuccal .
3. Distolingual .
4. Mesiolingual .
5. Distal (smallest).
• Each cusp has two cusp ridges.
3- Landmarks of each surfaces.

59. • Occlusal …
• Carve each cusp independently.
1. Mesiobuccal .
2. Distobuccal .
3. Distolingual .
4. Mesiolingual .
5. Distal (smallest).
• Each cusp has two cusp ridges.
3- Landmarks of each surfaces.

60. • Occlusal …
• Carve each cusp independently.
1. Mesiobuccal .
2. Distobuccal .
3. Distolingual .
4. Mesiolingual .
5. Distal (smallest).
• Each cusp has two cusp ridges.
3- Landmarks of each surfaces.

61. • Occlusal …
• Carve each cusp independently.
1. Mesiobuccal .
2. Distobuccal .
3. Distolingual .
4. Mesiolingual .
5. Distal (smallest).
• Each cusp has two cusp ridges.
3- Landmarks of each surfaces.

62. • Buccal … mesiobuccal and
distobuccal developmental
groove.
3- Landmarks of each surfaces.

63. • Mesial … Cervical line 1 mm towards occlusal.
3- Landmarks of each surfaces.

64. • Lingual … lingual developmental groove.
3- Landmarks of each surfaces.

65. 3- Landmarks of each surfaces.
• Distal … straight line.

66. 5- Clean, polish ,shine the tooth.
• By
fi
nishing kit :
1- Silk piece or cotton.
2- Alcohol Spray.

67. Final Work

68. Reference :
*Wheeler’s Dental Anatomy and Physiology.

69. END OF LAB