CCE Finishing & Surface Characterization Flashcards
6 cards from real CCE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CCE Finishing & Surface Characterization flashcards as text
Which finishing method is preferred to achieve the highest surface smoothness on feldspathic porcelain before glazing?
Answer: Sequential polishing with decreasing grit silicone points and diamond pastes
Sequential polishing with progressively finer abrasive instruments followed by diamond polishing paste achieves the smoothest surface prior to the glaze firing.
Auto-glazing of dental porcelain refers to:
Answer: Firing the porcelain to its fusion temperature so the surface material itself becomes smooth and glassy
Auto-glazing (also called self-glazing or over-glazing) involves firing the ceramic to a temperature where the surface particles fuse together without adding a separate glaze material.
What is the primary risk of over-polishing a ceramic restoration?
Answer: Rounded and flattened surface anatomy reducing esthetic characterization
Excessive polishing rounds cusp tips and flattens developmental grooves, erasing natural surface morphology and reducing the esthetic quality of the restoration.
Surface texturing on anterior ceramic restorations serves primarily to:
Answer: Mimic natural enamel lobes, perikymata, and developmental grooves for improved esthetics
Surface texture mimics the natural micro-anatomy of enamel (perikymata, lobes, developmental grooves), controlling light reflection and contributing to a lifelike appearance.
Which instrument is most appropriate for adding fine surface texture to an unglazed feldspathic ceramic surface?
Answer: Fine diamond bur or texturing stone used at low speed
Fine diamond burs or texturing stones used at low speed and light pressure allow precise, controlled addition of surface detail without fracturing the ceramic.
After chairside adjustment of a glazed ceramic crown with a diamond bur, the ceramist should:
Answer: Polish the adjusted area with rubber points and diamond paste, then re-glaze if possible
Chairside adjustments must be re-polished or re-glazed because diamond bur grinding destroys the glaze, leaving a rough, plaque-retentive, and structurally weakened surface.