Complete Denture Manufacturing Process

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What is the purpose of the de-flasking procedure in complete denture technology?

To separate the two parts of the flask

To liberate the denture with its model (correct)

To cure the acrylic resin

To attach the upper and lower lids

Why is it important to remove the excess acrylic using an acrylic bur during the de-flasking procedure?

To add more acrylic for reinforcement

To speed up the curing process

To improve the aesthetics of the denture

To prevent the breakage of the denture (correct)

What should be done if there are undercuts present in the model during the de-flasking procedure?

Increase the curing time

Fill them with more acrylic

Ignore them and proceed

Split the model into two or three parts to remove them easily (correct)

Which tool is recommended for separating the two parts of the flask during the de-flasking procedure?

Plaster knife Signup and view all the answers

When should the de-flasking procedure be performed in relation to the curing of acrylic resin?

After curing Signup and view all the answers

What is the purpose of the cold mold seal in the acrylic packing procedure?

To prevent adhesion between teeth and denture base Signup and view all the answers

Why is it crucial to remove all wax residues before proceeding with the acrylic packing procedure?

To avoid contamination of the acrylic resin Signup and view all the answers

What is the purpose of isolating the gypsum in the flasking during the acrylic packing procedure?

To prevent chemical reactions with the acrylic resin Signup and view all the answers

Why should the cold mold seal be thin and even on all parts of the mold except the teeth?

To ensure proper adherence of the teeth to the denture base Signup and view all the answers

What could happen if residual wax is not completely removed before packing with acrylic resin?

The acrylic resin will not set correctly Signup and view all the answers

How does a physical separator differ from a chemical isolator in isolating gypsum during flasking?

A physical separator forms a film of insoluble calcium alginate, while a chemical isolator does not. Signup and view all the answers

What is the purpose of covering the acrylic placed into the mold cavity with cellophane for the trial pack?

To allow excess acrylic to squeeze out around the edges Signup and view all the answers

What is the next step after pressing the flask until excess acrylic squeezes out around the edges?

Trimming away the excess acrylic flash Signup and view all the answers

How should the mold be when the acrylic is pressed smooth and dense?

Full Signup and view all the answers

What is the purpose of cooling the flask slowly on the bench after curing?

To prevent distortion during deflasking Signup and view all the answers

What is a potential downside of using a shorter heating technique during curing?

Likelihood of distortion during deflasking Signup and view all the answers

How should the temperature and time be controlled during the curing process?

Both temperature and time should be controlled Signup and view all the answers

What is the purpose of packing acrylic during the denture making process?

To prevent shrinkage and porosity after polymerization. Signup and view all the answers

What is the consequence of adding acrylic resin too early during the denture making process?

Results in porosity in the final prosthesis. Signup and view all the answers

In which stage of acrylic mixing does the mix become tacky, sticky, and adhere to the sides of the mixing jar?

Stringy or fibrous stage Signup and view all the answers

What happens if acrylic resin is added too late during the denture making process?

Loss of detail and increased vertical dimension of occlusion in final prosthesis Signup and view all the answers

Which component is responsible for initiating the polymerization process in the powder component of the denture material?

Benzoyl peroxide Signup and view all the answers

During which stage of acrylic mixing does further penetration of the monomer into the polymer occur?

Rubber-like stage Signup and view all the answers