teeth

1. TEETH SELECTION
Dr.Nadiah Alenaizan

2. WHEN
??

3. IS IT IMPORTANT ?
• Aesthetic
• Functional

5. The patient
should be
seated upright
position
Adequate light (Day light, neon ,fluorescence).

6. A) ANTERIOR TEETH
• Anterior teeth paly important role in the aesthetic of a patient. They are not
subjected to heavy occlusal load like the posterior.
• Factors considered during the selection:
 Size
 Form
 Colour /shade

7. • Size of the anterior teeth should be appropriate to the size of the face ,gender.
• Guide to select the size:
Pr-extraction record
Anthropological measurements of the patient.
Anatomical landmark
Theoretical concepts

8. PRE –EXTRACTION
RECORDS

9. METHODS USING ANTHROPOLOGICAL
MEASUREMENTS
Width of the upper central incisor = circumference of the head
13
The width of the maxillary central incisor=Bi-zygomatic
16

10. BASED ON THE WIDTH OF THE NOSE

11. METHOD USING ANATOMICAL
LANDMARKS
A-Sum of the width of all anterior and posterior teeth

12. B-Distance between two canine eminence
C-Distance between the attachments of buccal frenal

13. METHODS USING THEORETICAL
METHODS
Winkler's concept :
The teeth should be selected based on three different views
1-physiologicaly-biologically
2-psychologically
3-biomechanical

14. LEON WILLIAMS (1917)
Steins
(1936)

15. FORM OF THE ANTERIOR TEETH
Shape of the patient’s face or facial form
 Ovoid
Tapering
Square
Combination of the above

16. • Patient’s profile:

17. Dentogenic concept (Gender, Personality, Age):
Female: Male:

18. Age:
• Old people usually have abraded teeth with worn out contacts.
Personality:
• Vigorous people…Square, large teeth.
• Executives…..small, symmetrical arrange.

19. COLOUR FOR ANTERIOR
Age Complexatio
n
Colour of
patient’s hair
Colour
of eyes
Habits

20. POSTERIOR TEETH
SELECTION
Mesiodisal lengthBuccolingual width Occluso-gingival Hight

21. FACTORS CONTROL THE FORM OF
POSTERIOR TEETH
Condylar inclination
Hight of residual ridge
Patent’s age
Ridge relationship

22. MORPHOLOGICALLY TEETH CAN BE
CLASSIFIED AS:
Anatomic teeth  Aesthetic
 Great chewing
sufficiency
 Angles 33°, 30°
 Difficult and time
consuming to obtain
balanced occlusion
 More latera stress in
function resorption
Semi anatomic teeth
(Modifiedcusp,Low-cusp)
 More flexible to arrange
 Angles 10°
 Less aesthetic and
chewing efficiency than
anatomic
Cuspless teeth
(Flat,Monoplane,0°)
 Easy to set up
 Least lateral stress
 Best for patent wt poor
muscular control or poor
ridge relationship
 Less chewing efficiency
 Poor esthetic

23. Thank
you!

24. REFERENCES