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topic 6 logbook - Coggle Diagram
topic 6 logbook
Properties
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Waxes soften over a range of temperatures, not a single point
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Mechanical properties (brittleness, hardness)
Harder waxes: better for carving detail, more brittle when cold
Softer waxes: easier adaptation, more plastic but can distort
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Composition
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Type II vs Types III, IV, V
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More porous, irregular particles
Larger particle size, more water needed
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Type III, IV, V (dental stones)
More regular, denser, less porous particles
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Uses
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Type IV (high‑strength, low expansion stone)
Dies and casts for crowns, bridges, inlays
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Type V (high‑strength, high expansion stone)
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Properties
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Controlled by W/P ratio, temperature, additives (accelerators/retarders)
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Performance properties
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Good for general detail (study models, opposing casts)
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Thin areas can tear easily, especially in deep undercuts
Composition
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Volcanic, porous silica‑based material
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Fine white powder (e.g., chalk)
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Used for final polishing to give smooth, glossy surface
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Composition
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Natural waxes (e.g., paraffin, beeswax, carnauba)
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May contain resins, oils, fats, and coloring agents
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Uses
Pattern waxes (e.g., inlay wax) for casting patterns
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Viscosity
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Thicker mix = higher viscosity, less flow, stronger gel
Thinner mix = lower viscosity, more flow, weaker gel
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