W5. Fabrication of wax pattern for fixed applience - gnathological aspects -

Question 1

1. What are the 5 steps of constructing a fixed dental appliance?

Answer 1

1. Tooth preparation
2. Impression taking
   - From prepared teeth
   - Antagonistic arch
   - Key impression
3. Construction of casts
4. Mounting to articulator
   (programming)
5. Waxing up

Question 2

2A. What are the clinical steps of FPD constructions?

Answer 2

1. Diagnosis(History, TMJ evaluation, Intra/extraoral examination, Diagnostic casts Full mouth radiographs)
2. Treatment Plan → Abutment Preparation → Temporary FPD → Impressions → Registration of Occlusion
3. Try-in and shade selection
4. Try-in and cementation recall

Question 3

2B. What are the laboratory steps of FPD constructions?

Answer 3

3. Casts placed in an articulator -> wax pattern fabrication
4. → Investing → Burnout → Casting → Deflasking → Blasting → Finishing
5. Veneering

Question 4

3. What is happening here?

Answer 4

Making a wax pattern

Question 5

4. How to fabricate wax pattern?

Answer 5

➢ First step: making retainer’s caps
➢ After it: building the surfaces of the full- metal crowns or the metal framework of the veneered crowns (occlusal, vestibular, oral, mesial, distal) with wax added technique

Question 6

5. What are the 2 techniques for making crown caps?

Answer 6

1. Wax dipping technique
2. Adapta technique

Question 7

Adapta deep drawing system
6. What are the features of Adapta deep drawing system?

Answer 7

1. Inexpensive and long-proven system using special plastic films.
2. The alternative to wax dipping; simple, fast deep drawing of crown caps.
3. Crown caps made with Adapta film with their high stability.
4. The thin film, transparent or red, systematically provides the necessary space for luting cement

Question 8

Adapta deep drawing system
7. What are important parameters when it comes to Adapta deep drawing system?

Answer 8

1. crown foil has a thickness of approx. 0.3 - 0.35 mm
2. Adapta foil is shortened about 1 mm above the preparation border
3. marginal area is completed with a cervical wax.

Question 9

8. What are the Parts of the Adapta - system?

Answer 9

1. Former with Adapta mastic
2. Foil holder
3. Adapta foils 0.6 mm
4. Spacer foils 0.1 mm

Question 10

9. What are the steps of Adapta technique?

Answer 10

0, Determine the finishing line with a pencil and shorten the cap everywhere with 1mm
1. Isolation in water
2. Heating the foil until fully transparent
3. Cut up the foil and remove it from the die
4. cut around the cap
5. Use cervical wax
6. Complete the cap to finishing line
7. Removal of the excess of the wall
=> Then, the cap is ready for the wax adding technique

Question 11

10. How do we wax? (wax adding technique after adapta technique)

Answer 11

Waxing up the occlusal surface”
1. orientational cones
2. triangular ridges
3. mesial and distal ridges
4. marginal ridges