Restorative & Materials · single question
What crown material is BEST for a fractured mandibular molar with minimal remaining tooth structure in a patient with bruxism?
Show answer and explanation
Correct answer: D. Zirconia
✓ D) Zirconia is correct.
Zirconia is the ideal choice here: it offers exceptional fracture resistance (flexural strength ~900–1200 MPa), superior wear resistance crucial for bruxers, and excellent esthetics. In a tooth with minimal structure, full-coverage zirconia provides strength and protection. PFM risks porcelain chipping from bruxism. All-porcelain is too brittle under heavy occlusal loads. Stainless steel is for pediatric teeth — not definitive adult restorations.
Zirconia is the ideal choice here: it offers exceptional fracture resistance (flexural strength ~900–1200 MPa), superior wear resistance crucial for bruxers, and excellent esthetics. In a tooth with minimal structure, full-coverage zirconia provides strength and protection. PFM risks porcelain chipping from bruxism. All-porcelain is too brittle under heavy occlusal loads. Stainless steel is for pediatric teeth — not definitive adult restorations.
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