Finishing and polishing materials, abrasives
Dental Materials · Dental (BDS)
Study notes
Why is a filling polished in steps from coarse to fine discs, not just one fine disc? A coarse disc quickly shapes the filling and removes excess, but leaves scratches. Each finer grit removes the scratches of the previous one. Skipping straight to fine would take far too long to shape, and jumping from coarse to ultra-fine leaves visible scratches that trap plaque and stain. The graded sequence gives a smooth, glossy, plaque-resistant surface efficiently.
Related topics
- Introduction: biocompatibility, standards and specifications
- Physical properties: stress, strain, hardness, wear
- Mechanical properties: strength, elasticity, fatigue, creep
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- Gypsum products: plaster, stone, die materials
- Waxes: inlay, baseplate, boxing waxes