Material Selection & Aesthetic Customization Flashcards
7 cards from real CDC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Material Selection & Aesthetic Customization flashcards as text
Which ceramic system is most appropriate for fabricating a high-strength posterior crown that also requires translucency matching natural dentition?
Answer: Zirconia-reinforced lithium silicate (ZLS)
Zirconia-reinforced lithium silicate combines high flexural strength with acceptable translucency, making it suitable for posterior crowns requiring aesthetics.
When customizing the chroma of a ceramic restoration, increasing chroma primarily affects which optical characteristic?
Answer: Saturation of the hue
Chroma refers to the saturation or intensity of a hue; increasing chroma makes the color appear more vivid and saturated.
A patient presents with hypocalcified white spot lesions on adjacent teeth. Which layering technique best mimics this internal characterization?
Answer: Incorporating opacious dentin internally before adding enamel layer
Opacious dentin layered internally replicates the subsurface opacity of hypocalcification spots, creating depth and realism.
Which factor most significantly influences the selection between press-ceramic and CAD/CAM-milled ceramic for an anterior veneer?
Answer: Required surface texture and marginal fit precision
CAD/CAM milling offers superior marginal accuracy while press ceramics allow precise control of surface texture and optical characterization during wax-up.
Fluorescence in natural teeth originates primarily from which structure?
Answer: Dentin collagen and organic matrix
Dentin's organic collagen matrix fluoresces under UV light, giving natural teeth their characteristic blue-white glow in black-light conditions.
When selecting ceramic for a patient with severe bruxism requiring a mandibular posterior bridge, which material property is most critical?
Answer: High flexural strength exceeding 800 MPa
High flexural strength (>800 MPa, typical of high-strength zirconia) resists fracture under heavy occlusal loading in bruxism patients.
In the Munsell color system, which parameter directly corresponds to the brightness or darkness of a tooth shade?
Answer: Value
Value in the Munsell system describes the lightness or darkness of a color, ranging from black (0) to white (10).