This high-yield revision note on Ceramics & Porcelain: Classification for INBDE & NEET MDS covers everything examiners typically test under Dental Materials — structured as quick-reference tables, clinical correlations, mnemonics and previous-year-style high-yield points. It's built for last-mile revision before NEET MDS, INI-CET MDS and INBDE, so you can scan it in minutes instead of re-reading a whole textbook chapter.
| Category | Examples | Composition/Property |
|---|---|---|
| Feldspathic porcelain | Traditional dental porcelain | Feldspar + quartz + kaolin; high esthetics, low strength, needs metal/zirconia substructure for posterior use |
| Leucite-reinforced ceramic | IPS Empress | Leucite crystals reinforce glass matrix; good for veneers/inlays |
| Lithium disilicate | IPS e.max | Higher strength (~400 MPa) than leucite, used for crowns, can be pressed or CAD/CAM milled |
| Zirconia (Y-TZP) | Full-contour or layered zirconia crowns | Highest flexural strength (~1000+ MPa), transformation toughening mechanism (tetragonal→monoclinic on crack propagation absorbs energy), less translucent (esthetic trade-off), used for posterior crowns/bridges/implants |
| Metal Ceramic (PFM) | Porcelain fused to metal | Combines metal strength + porcelain esthetics; needs opaque layer to mask metal; still gold standard for long-span bridges in many settings |
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