CCE Ceramic Application & Contouring 2

Question 1

When building up incisal edge translucency on an anterior crown, which ceramic layering technique best mimics natural enamel optical properties?

Accepted Answer

Layer thin increments of incisal/enamel ceramic over dentin build-up, allowing light transmission

Answer

Thin incremental layering of incisal/enamel ceramic over a dentin core recreates natural light diffusion and translucency characteristic of real enamel.

Question 2

What is the primary purpose of the 'shoulder' or 'bevel' preparation when applying porcelain to a PFM crown?

Accepted Answer

To provide space for adequate ceramic thickness and esthetic margin

Answer

A shoulder or bevel margin provides sufficient space (typically ≥1.5 mm) for ceramic buildup that achieves both esthetics and strength at the margin.

Question 3

When contouring buccal contours of a ceramic restoration, a dentist notices the emergence profile appears too flat. What adjustment best corrects this?

Accepted Answer

Add ceramic to the cervical third and re-fire

Answer

A flat emergence profile is corrected by adding ceramic mass at the cervical-to-mid-buccal area to create a natural convex contour before the final fire.

Question 4

Which of the following describes 'overfiring' of feldspathic porcelain during the build-up stage?

Accepted Answer

Ceramic becomes too glossy and loses surface texture, and internal strength may be compromised

Answer

Overfiring causes excessive fluidity, collapsing surface texture and potentially altering crystal structure, resulting in a glassy, weakened restoration.

Question 5

During ceramic contouring, which area of a posterior crown most commonly requires reduction to prevent premature occlusal contact?

Accepted Answer

Marginal ridges and cusp tips

Answer

Marginal ridges and cusp tips are the highest points in posterior occlusion and are most prone to ceramic over-build causing premature contacts.

(CCE) Certified Ceramist Practice Test

(CCE) Certified Ceramist Practice Test

CCE Ceramic Application & Contouring 2