Prosthodontics & Occlusion · patient case question
Which type of denture base acrylic is LEAST likely to harbor Candida albicans?
Patient case: Ceramic Crown Delivery
demo: 38-year-old male
chief: Delivery of a lithium disilicate crown on tooth #30.
history: Bruxism. Existing crown on #6 has become discolored at the margin.
meds: None
findings: Lithium disilicate crown returned from the laboratory. Adjacent tooth #6 shows a grey marginal discoloration beneath a ceramo-metal crown.
Show answer and explanation
Correct answer: A. Heat-cured acrylic
- A. Correct. Heat-curing yields a higher degree of conversion, less residual monomer, and lower porosity, so there is less surface area and fewer micropores for Candida to colonize.
- B. Light-cured repair materials are typically more porous than a processed heat-cured base.
- C. Self-cured acrylic has higher residual monomer and greater porosity, favoring colonization.
- D. Chairside relines are among the most porous and are notorious for candidal colonization.
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