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Casting & investment material
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49- Dental casting /lost wax technique def. /sprue Copy 05 minLecture1.1
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50- Follow sprue –direction-type-diameter Copy 05 minLecture1.2
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51- Follow sprue length / thickness of investment /number of sprues /position /the Ring Copy 05 minLecture1.3
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52- wetting of wax pattern (surfactants ) /dimensional changes and compensations Copy 05 minLecture1.4
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53- ring removal-liner asbestos / wax burnout / heating metal / pouring of metal Copy 05 minLecture1.5
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54- cutting sprue/ finishing and polishing/ pickling / porosity / Copy 05 minLecture1.6
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55- Investment materials /requirement needed /types /silica and binder (gypsum-phosphate-silicate) / gypsum bonded investments –def. – properties (expansion) Copy 05 minLecture1.7
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56- Indications of gypsum boded investment /phosphate bonded investment /silicate bonded investments/ Copy 05 minLecture1.8
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