CDC Quality Control & Industry Standards 2

Question 1

Which ISO standard specifically governs ceramic materials used in dentistry?

Accepted Answer

ISO 6872

Answer

ISO 6872 specifies requirements and test methods for ceramic materials used in restorative and prosthetic dentistry.

Question 2

During incoming inspection of dental porcelain, which defect would most critically warrant rejection of a batch?

Accepted Answer

Crystalline inclusions visible under magnification

Answer

Crystalline inclusions in dental porcelain indicate contamination or improper manufacturing and can compromise restoration strength and esthetics.

Question 3

What does the term 'process validation' mean in a dental laboratory quality system?

Accepted Answer

Documenting that a process consistently produces results meeting specifications

Answer

Process validation establishes documented evidence that a dental laboratory process will consistently produce a product meeting its predetermined specifications.

Question 4

Under FDA regulations, a dental laboratory that fabricates custom ceramic restorations is classified as a:

Accepted Answer

Device establishment subject to registration requirements

Answer

Dental laboratories that fabricate custom devices are typically required to register as device establishments with the FDA.

Question 5

A shade guide used for quality control verification should be replaced when:

Accepted Answer

Tabs show visible wear, fading, or damage affecting color accuracy

Answer

Worn or faded shade tabs produce inaccurate color comparisons, making replacement necessary when physical condition compromises reliability.

(CDC) Certified Dental Ceramist Practice Test

(CDC) Certified Dental Ceramist Practice Test

CDC Quality Control & Industry Standards 2