Introduction/ 1st Lab

1. "Dental
Anatomy"
1st Lab

2. Dental anatomy:
the study of the development, morphology,
function, and identity of each of the teeth in the
human dentitions,
as well as
the way in which the teeth relate in shape, form,
structure, color and function to the other teeth in
the same dental arch and to the teeth in the
opposing arch.

3. Maxillary: refers to the upper jaw or maxilla.
Mandibular: refers to the lower jaw or mandible.

4. Midline:
an imaginary line dividing the maxillary and
mandibular arches into two equal halves.

5. Anterior: refers to direction towards the
front plane of the body.
Posterior: refers to direction towards the
back plane of the body.

6. Maxillary teeth: teeth arranged in upper arch.
Mandibular teeth: teeth arranged in lower arch.

7. Quadrants:
Four in entire mouth:
A.Upper right.
B.Upper left.
C.Lower left.
D.Lower right.

8. Occlusion:
when the upper teeth come in contact with the
lower teeth

9. Dentition: the teeth in the dental arch in the mouth.
Dentitions either:
2. Permanent, succedaneous teeth1. Deciduous ,primary,
temporary, milk , baby teeth.

10. 1. Deciduous ,primary, temporary, milk , baby teeth:
 I
𝟐
𝟐
C
𝟏
𝟏
M
𝟐
𝟐
= 10 in each arch.
 Five teeth in each quadrant.
 Total deciduous teeth= 20

11. 2. Permanent, succedaneous teeth:
 I
𝟐
𝟐
C
𝟏
𝟏
P
𝟐
𝟐
M
𝟑
𝟑
= 16
 Eight teeth in each quadrant
 Total permanent teeth=32

12. Tooth Surfaces:
crown of all teeth have five surfaces, which are;
1. Facial surface:
(Labial surface ,Buccal surface).
2. Lingual surface (Palatal surface).
3. Mesial surface.
4. Distal surface.
5. Incisal surface, Occlusal surface
Proximal surface

13. 1. Facial surface:
in general it's called on the front surface of anterior
and posterior teeth in upper and lower arches,
its either:
 Labial surface:
the surface in the anterior teeth only
(incisors and canines) that are towards lips.
 Buccal surface:
the surface in the posterior teeth only
(premolars and molars) that face cheeks.

15. 2. Lingual surface (Palatal surface).
it's called on the surface opposite to facial surface of
each tooth from inner side of the mouth) it's called:
 Lingual surface:
surface facing towards tongue
(in upper and lower arches).
 Palatal surface:
surface facing the palate
(in upper arch only).

16. Proximal surface;
its called on both mesial and distal surface of the
tooth;
3- Mesial surface:
called on the surface towards
midline.
4- Distal surface:
called on the surface away from
midline.

17. 5- Incisal surface , Occlusal surface
Incisal surface:
called on the anterior teeth
surface (incisors and canines)
that come in contact with
those in the opposite jaws
during the act of closure.
Occlusal surface:
called on the posterior teeth
surface(premolars and
molars) that come in contact
with those in opposite jaw
during act of closure.

18. Tooth line angle and point angle:
 Line angle: two surfaces of a tooth meet.
 Point angle: three surfaces of a tooth meet.

19. Line angles of anterior teeth:
1. Mesio-labial 2. Disto-labial 3. Mesio-lingual
4. Disto-lingual 5. Labio-incisal 6. Linguo-incisal

20. Line angles of posterior teeth:
1. Mesio-buccal 2. Disto-buccal 3. Mesio-lingual
4. Disto-lingual 5. Mesio-occlusal 6. Disto-occlusal
7. Bucco-occlusal 8. Linguo-occlusal

21. Point angles of anterior teeth
1. Mesio-labio-incisal 2. Disto-labio-incisal
3. Mesio-linguo-incisal 4. Disto-linguo-incisal

22. Point angles of posterior teeth:
1. Mesio-bucco-occlusal 2. Disto-buccal-occlusal
3. Mesio-lingual-occlusal 4. Disto-linguo-occlusal

23. *Tooth numbering equation
Dentition + Arch + Side + Tooth name
Deciduous
Or
Permanent
Maxillary
Or
Mandibular
Right
Or
Left
Central incisor
Lateral incisor
Canine
First premolar
Second premolar
First molar
Second molar
Third molar

24. Tooth notation systems
1.Zsigmondy/Palmer notation system.
 In 1861- by Zsigmondy then modified by
Palmer, is a four quadrant symbolic system.

25. Deciduous
Permanent

26. Training:
A
4
c
2
D
6
B
8

27. 2- Universal notation system
-In 1968 by ADA
( Tooth number prior by # )
 Deciduous
 Permanent

28. Training:
# L =
# 26 =
# R =
# 11 =
# I =
# 5 =
# O =
# 24 =
# B =
# 14 =
# H =
# 32 =
# M =
# 21 =
# F =
# 1 =
# S =
# 18 =
# Q =
# 7 =

29. 3- FDI system (Two digits system) Adopted by
WHO and IADR.
 Deciduous;
for example; 5 1 so
5 represent the quadrant of that tooth
1 represent the tooth name

30.  Permanent
3- FDI system (Two digits system) Adopted by
WHO and IADR.

31. Training:
72 =
13 =
63 =
36 =
54 =
22 =
83 =
43 =

32. 1st Lab done
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