Decontamination Techniques for Dental Crowns

The video tutorial explains the process of decontaminating dental crowns after they have been tried on a patient, which results in contamination by saliva. It highlights the importance of removing salivary phosphates to ensure effective bonding. The tutorial covers the use of a sandblaster or chairside micro etcher with 50-micron aluminum oxide to clean and roughen the internal surface of the restoration. This process enhances the surface area for better bonding with zirconia primer and resin cement. The video also discusses the application of a zirconia primer to prepare the crown for final bonding.

Why is it important to decontaminate the internal surface of a dental crown?

• To reduce the crown's weight

• To make the crown more comfortable

• To prevent saliva from inhibiting bonding

• To enhance the crown's color

What is one of the best methods to decontaminate the internal surface of a dental restoration?

• Rinsing with water

• Using a sandblaster or micro etcher

• Applying a fluoride gel

• Using a toothbrush

What material is used in the chair side micro etcher to remove salivary phosphates?

• Calcium carbonate

• Zirconium dioxide

• 50 micron aluminum oxide

• Silicon carbide

What is a benefit of using a milled chair side Bruxer crown?

• It is less durable

• It is more colorful

• It is lighter in weight

• It is easier to identify sandblasted areas

What happens to the internal surface of the crown after sandblasting?

• It becomes shiny and smooth

• It becomes dull and matte

• It becomes sticky

• It becomes transparent

What is the purpose of rinsing the restoration after air abrasion?

• To change the color

• To cool down the crown

• To add moisture

• To remove dust and debris

What is applied to the restoration after it is dried?

• A sealant

• A fluoride varnish

• A zirconia primer

• A wax coating

What does a zirconium ceramic primer contain?

• Fluoride

• Manganese

• MDP

• Calcium