W4 - Clinical and laboratory steps of complete denture fabrication

Question 1

8 steps for preparation of complete denture

Answer 1

1. Personal particulars
2. Present complaints
3. Dental History
4. Medical History
5. Extra-oral Examination
6. Intra-oral Examination
   (stomato-onkological examination)
7. Orthopantomogram
8. Examination of the denture.

Question 2

What are the 3 border trimming materials

Answer 2

1. Green stick compound
2. Impresison wax
3. Acrylic

Question 3

What are the 2 secondary impression taking techniques?

Answer 3

-mucostatic
-mucodynamic

Question 4

What are the 4 secondary impression materials?

Answer 4

1. ZnO-eugenol paste
2. Silicon
3. Polysulfide
4. Oroplastic impression material

Question 5

Which technique is used for secondary impression taking? (based on the photo)

Answer 5

Combined technique which uses ZnO eugenol and oroplastic impression material

Question 6

Jaw registration
Preparing upper and lower occlusal rims
-> Measures of wax rim
-> Highness at the front region of upper and lower occlusal rim?

Answer 6

• Lower: 16-18 mm
• Upper: 18-22 mm

Question 7

Jaw registration
Preparing upper and lower occlusal rims
-> Measures of wax rim
-> Highness at the molar region?

Answer 7

To the middle of the tuberculum alveolare ridge

Question 8

Jaw registration
Preparing upper and lower occlusal rims
-> Measures of wax rim
-> Width of molar region and front region?

Answer 8

1. Molar region: 6 mm
2. Front region: 3 - 4 mm

Question 9

Jaw registration
Preparing upper and lower occlusal rims
-> Wax rim needs to be longer than the second molar
-> T/F?

Answer 9

False
-> No longer than the second molar

Question 10

Jaw registration
-> what do we need to determine and carve during tooth shade selection?

Answer 10

Determination of:
* The rest vertical dimension (RVD)
* Interocclusal space
* The occlusal vertical dimension (OVD)

Carving the orientation lines

Question 11

Semiadjustable and adjustable articulators construct __ (2 things)

Answer 11

1. Occlusal balance in lateral
2. Protrusive movement of the mandible

Question 12

Casts are mounted on an articulator
-> Setting up ____ in the laboratory

Answer 12

the trial denture

Question 13

What do we need to know for try-in procedures?

Answer 13

The trial dentures should be examined first on the articulator and then in the mouth.

Question 14

Name of this process

Answer 14

Flasking and packing acrylic resin

Question 15

The overall objective when fitting complete dentures is __

Answer 15

to ensure that the patient is given the best possible start with the new prostheses

Question 16

The overall objective when fitting complete dentures is to ensure that the patient is given the best possible start with the new prostheses.
-> This may be achieved by checking that ___ (3 things)

Answer 16

• There is no pain when the dentures are inserted and removed from the mouth, or when the teeth are brought into occlusal contact.
• The teeth meet evenly.
• The dentures stay in place when inserted and during normal opening of the mouth.

Question 17

9 clinical steps of complete denture fabrication

Answer 17

1. History, examination, stomato-oncological monitoring
2. Primary impressions
3. Outlining of the special tray on the primary cast
4. Functioning of the special tray, Secondary impressions
5. Determination of centric relation
6. Try in procedure
7. Insertion
8. Short term control
9. Long term control

Question 18

5 laboratory steps of complete denture fabrication (only after clinical steps)

Answer 18

1. Primary cast
2. Fabrication of special trays
3. Fabrication of the secondary cast and occlusal rims
4. Mounting of articulator, setting up teeth
5. Finishing of the denture