Dr Mostafa Elsayed

Prosthetics: art & science of artificial body part replacement

Prosthdontics: art & science of

replacing missing teeth & or craniofacial structures

Prosthesis: the artificial part used

to replace a body part

Dentulous

Edentulous:

Partially edentulous

Complete denture

Fixed Partial denture

Removable partial denture

DEFINITIONS

“A prosthesis that replaces the lost natural

dentition and associated structures of the

mandible and / or the maxilla”.

base

Artificial teeth

border

flanges

Buccal

Flange

Labial

Flange

Lingual

Flange

Fitting

surface

Polished

(Non fitting)

surface

Fitting

surface

Occlusal

surface

Occlusal

surface

Objectives of Complete Denture

Construction

Restoration of masticatory efficiency.

Restoration of facial appearance.

Correction of speech defects

Preservation of remaining natural tissues

Patient

satisfaction

and

comfort

CLINICAL AND LABORATORY STEPS FOR

C.D. CONSTRUCTION CLINICAL LABORATORY

1 . Examination and Diagnosis .

2 . Preliminary Impression .

3 . Pouring the Impression (Study Cast) .

4 . Special Tray Construction .

5 . Final Impression . 6 . Boxing the impression

7 . Pouring the Impression .

8 . Occlusion Blocks Construction.

9 . Jaw Relation Records .

13 .Try In Stage .

18.Denture Insertion .

19. Clinical remounting

20 . Follow Up .

10 .Mounting U/L casts .

11 . Arrangement of Artif. Teeth .

12 .Waxing Up .

14. Facebow index for clinical remount

15.Denture Processing .

16.Laboratory remounting

17. Finishing and polishing

1 . Examination and Diagnosis .

2 . Preliminary Impression .

Alginate Impression

Upper

Lower

Stock Trays

CLINICAL

Impression Compound

CLINICAL

3 . Pouring the Impression .

LABORATORY

4 . Special Tray Construction .

Lower Special Tray

Upper Special Tray

LABORATORY

5 . Final Impression .

Upper Impression

Lower Impression

CLINICAL

6 . Boxing the impression

7 . Pouring the Impression .

LABORATORY

8 . Occlusion Blocks Construction.

Upper Occlusion Blocks

Lower Occlusion Blocks

LABORATORY

9 . Jaw Relation Records .

CLINICAL

10 .Mounting U/L casts .

LABORATORY

11 . Arrangement of Artificial Teeth .

LABORATORY

12. waxing up

LABORATORY

13. Try In Stage .

CLINICAL

14. Facebow index for clinical remounting

LABORATORY

15 .Denture Processing .

LABORATORY

16. Laboratory remounting

LABORATORY

17. Finishing and polishing

LABORATORY

18. Denture Insertion .

19. Clincal remounting and occlusal adjustment

CLINICAL

20. Follow up

CLINICAL

1 . Loss of teeth .

Changes That Happen After

Teeth Loss :

2 . Resorption of the alveolar bone .

Changes That Happen After

Teeth Loss :

3 . The mandible become closer to the nose .

4 . Lack of support to the facial muscles .

Changes That Happen After

Teeth Loss:

Anatomical changes

associated with loss of teeth

Deepening

of the

nasolabial

groove

Wrinkling

of the

skin

Chin-nose

approximation

Anatomical changes

associated with loss of teeth

Deepening

of the

nasolabial

groove

Wrinkling

of the

skin

Chin-nose

approximation

v

Extra-oral Intra-oral

1. Interpupillary line:

2. Alatragus line:

3. Nasolabial sulcus:

4. Labiomental sulcus:

5. Philtrum

6. Vermilion border:

7. Angle of the mouth

8. Modulus

Extra-oral

1. Interpupillary line:

Definition: it is an imaginary line extending

from the pupil of one eye to the other.

Importance: used for determining the occlusal

plane of the anterior teeth of the denture.

Extra-oral

2. Alatragus line:

Definition: it is an imaginary line

extending between the ala of the nose and

tragus of the ear.

Importance: it used for determining the

occlusal plane of the posterior teeth of the

denture.

Extra-oral

3. nasolabial sulcus:

Definition: it is a depression extending from

the side of the nose downwards and backwards.

Importance:

Becomes deeper with age

and with loss of teeth.

The replacement of teeth

should restore its normal

shape.

Extra-oral

4. labiomental sulcus:

Definition; a depression that runs horizontally between

the lower lip and the chin.

Importance: gives an indication about the relationship

between the mandible and the maxilla.

Extra-oral

classΙ(normal)

classΙΙ

(retrognathism)

classΙΙΙ

(prognathism)

5. Philtrum:

Definition: diamond shaped area located at the center of

the upper lip.

Importance:

With anterior teeth loss it becomes flattened.

Replacing of the missing teeth should restore its normal

shape.

Extra-oral

6. Vermilion border:

Definition: it is the transitional epithilium between the mucous membrane of the

lip and the skin.

Importance:

It is improved by proper positioning of anterior teeth and thickening of the

labial flanges of the denture.

Extra-oral

7. angle of the mouth

Importance:

a. It becomes inflamed with

prolonged edentulous state

due to dripping of saliva

Treated by construction of a

denture at the proper V.D.O.

b. It lies opposite to the canines

for determination of the canine

line.

(angular chelitis)

Extra-oral

Angular cheilitis

Extra-oral