dental anatomy lab Permanent maxillary right first molar drawing steps

1. Dental Anatomy
Permanent Maxillary Right First Molar

2. Contents
* Table.
* Drawing
A- Kit.
B- Steps.

3. Table 11-1

4. Drawing Kit
1- Graphical copybook.
2- Pencil.
3- eraser.
4- Ruler.
1
4
3
2

5. Drawing Steps

6. Note :
Scale Drawing
Each 1 mm in table
=
1 medium square in graph paper.

7. Tips :
Drawing with
tracing paper
is helpful.

8. Buccal Surface

9. 1- Tooth name
• Full name=
• Dentition + Arch + Side + Tooth

10. 2- Surface name
• Buccal because tooth Posterior.

11. 3- Midline
• To identify the mesial and distal surfaces.

12. 4- Cervical line
• To identify the crown and root.
Root

13. • A- Length of crown = 7.5 mm
Root
5- Measurements :
(Table 11-1)

14. Root
B- Thirds division :
• Cervico- Occlusal =
Cervical + middle + Occlusal
• Cervical = 2.5 mm.
• Middle = 2.5 mm.
• Occlusal = 2.5 mm.

15. • C- Length of Root.
• Buccal = 12 mm.
• Lingual = 13 mm.
5- Measurements :
(Table 11-1)

16. • D- Mesiodistal diameter of
crown at cervical line = 8 mm.
• ( 4 mm Mesial , 4 mm Distal ).
5- Measurements :
(Table 11-1)

17. • E- Mesiodistal diameter of crown = 10 mm.
• ( 5 mm mesial , 5 mm distal ).
• Location of contact area:
• Mesial = at junction of middle and occlusal third.
• Distal = at middle of middle third.
5- Measurements :
(Table 11-1)

18. • F- intercuspal distance =5 mm. (2.5 mm mesial , 2.5 mm distal).

19. • G- Sulcus depth =1 mm.

20. • Root Trunk = 5 mm.
• Root trunk = distance from
cervical line to trifurcation
area of roots.
• arrowhead ➡

21. 6- Draw the surface.
• Connect between the points.
• Mesial outline.

22. 6- Draw the surface.
• Connect between the points.
• Distal outline

23. 6- Draw the surface.
• Connect between the points.
• Mesial and distal cusp slopes.

24. 6- Draw the surface.
• Root
• interapical distance=4 mm.
• = 3 mm distal.
• = 1 mm mesial.
Root
Trunk

25. 6- Draw the surface.
• Root
• Distobuccal

26. 6- Draw the surface.
• Root
• Mesiobuccal

27. • Root
• Palatal
6- Draw the surface.

28. • Cervical Line.
6- Draw the surface.

29. 6- Draw the surface.
• Mesiolingual cusp.
• Distolingual cusp.

30. Final draw
• Buccal Surface

31. Mesial Surface

32. 1- Tooth name
• Full name=
• Dentition + Arch + Side + Tooth

33. 2- Surface name
• Mesial surface.

34. 3- Midline
• To identify the Buccal and Lingual surfaces.

35. 4- Cervical line
• To identify the crown and root.
Root

36. • A- Length of crown = 7.5 mm.
Root
5- Measurements :
(Table 11-1)

37. Root
B- Thirds division :
• Cervico- Occlusal =
Cervical + middle + Occlusal
• Cervical = 2.5 mm.
• Middle = 2.5 mm.
• Occlusal = 2.5 mm.

38. • C- Length of Root.
• Buccal = 12 mm.
• Lingual = 13 mm.
5- Measurements :
(Table 11-1)

39. • D- Buccolingual diameter of
crown at cervical line = 10 mm.
• ( 5 mm buccal , 5 mm lingual).
5- Measurements :
(Table 11-1)

40. • E- Buccolingual diameter of crown = 11 mm.
• Crest of curvature :
• Buccal = within cervical third.
• Lingual = middle third.
5- Measurements :
(Table 11-1)

41. • F- Intercuspal distance = 6 mm.
• ( 3 mm buccal , 3 mm lingual).

42. • G- Sulcus Depth = 1.5 mm.

43. • H- Buccal cusp shorter 0.5 mm
than the lingual cusp.

44. • I - inter apical distance = 6 mm
• ( buccal = 3mm , Lingual = 3 mm).

45. 6- Draw the surface.
• J - Root Trunk = 5 mm from
cervical line
• Root trunk = distance from
cervical line to trifurcation
area of roots.

46. 6- Draw the surface.
• Cervical line = 1mm.

47. 6- Draw the surface.
• Connect between the
points.
• Buccal outline.

48. 6- Draw the surface.
• Connect between the points.
• Lingual outline.

49. • Connect between the points.
• Buccal and lingual cusp slopes.
6- Draw the surface.

50. 6- Draw the surface.
• Cervical line = 1mm.

51. 6- Draw the surface.
• Roots:
• Mesiobuccal root.

52. 6- Draw the surface.
• Roots:
• Lingual root.

53. Final Draw
• Mesial Surface.

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

55. END OF LAB