01: Custom Trays

Question 1

In 15 years how many people are estimated to be partially endentulous?

Answer 1

up to 200 million

Question 2

What percent of the edentulous population has dentures made each year

Answer 2

15%

Question 3

What are some consequences of missing teeth?

Answer 3

Nutritional changes
Obesity
Diabetes
CAD
Some Cancers

Question 4

What are the 6 Steps in Treating a Patient that is going to receive Complete Dentures

Answer 4

Initial exam and preliminary impressions
Final impressions made with a custom tray
Records appointment
Wax try-in appointment
Insertion appointment
Post-insertion F/U visits (24 Hours and 1 Week)

Question 5

What type of impressions are made with a custom tray?

Answer 5

Dynamic impressions

Question 6

What is the purpose of the Records Appointment

Answer 6

To determine how the jaws relate to one another for mounting the casts

Question 7

What are preliminary impressions taken with?

Answer 7

Alginate in stock impression trays

Question 8

What is the preliminary cast made from?

Answer 8

Dental stone

Question 9

What color pencil is used to draw a line at the tissue reflection of the preliminary stone cast

Answer 9

Red

Question 10

After drawing a red line at the tissue reflection what is the next step?

Answer 10

Draw a line with blue pencil that is parallel and 3mm above the red line

Question 11

After the casts are marked, how long do you soak it in water before applying a coat of Alcote?

Answer 11

1 minute

Question 12

What material is used to block out the tissue undercuts?

Answer 12

Baseplate wax

Question 13

After blocking out the undercuts, what is redrawn with blue pencil?

Answer 13

The custom tray borders

Question 14

After the custom tray borders are redrawn, what is applied to the casts?

Answer 14

Model Releasing Agent (MRA) followed by VLC Material

Question 15

What are the approximate dimension of the custom tray handles?

Answer 15

5-6 mm Thick
12-15 mm High
18-20 mm Wide

Question 16

How long are the top trays cured for?

Answer 16

4 minutes

Question 17

After light curing what is used to trim and smooth the tray even with the blue line on the model?

Answer 17

An acrylic bur

Question 18

How do you make a hybrid denture

Answer 18

First you make the complete removable denture. Then you combine it with abutments that are screwed into the bone like implants

Question 19

What is the tissue reflection?

Answer 19

The lowest point in the vestibule between alveolus and cheek/lip

Question 20

Where is the one place on the mandibular cast where the blue and red line overlap?

Answer 20

Posterior

Question 21

What is the purpose of the block out wax?

Answer 21

The prevent tray material from getting into undercuts