全口义齿印模 (impression of complete denture). 1. classification of impression
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全口义齿印模全口义齿印模(Impression of complete dentur(Impression of complete dentur
e)e)
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1.1. Classification of Classification of impressionimpression
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According to impression According to impression timestimes • Primary impression method (Primary impression method ( 一次印模一次印模 ))
• Secondary impression method (combinSecondary impression method (combined impression) (ed impression) ( 二次印模法又称联合印模二次印模法又称联合印模法法 ))
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According to the patient mouth According to the patient mouth (open or close)(open or close)
• Open-mouth impression (Open-mouth impression ( 开口式印模开口式印模 ))
• Close-mouth impression (Close-mouth impression ( 闭口式印模闭口式印模 ))
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According the press to the According the press to the mucosamucosa
• Mucostatic impression technique(Mucostatic impression technique( 粘膜粘膜静止式印模静止式印模 ))
• Mucodynamic impression(Mucodynamic impression( 粘膜运动式印粘膜运动式印模模 ))
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2.Method and procedure of 2.Method and procedure of making impression of making impression of complete denturecomplete denture
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Preparation (stock trays Preparation (stock trays selection)selection)
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Making preliminary Making preliminary impressionimpression
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The fabrication of custom The fabrication of custom traystrays
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Buccal border modeling (Buccal border modeling ( 颊部边缘修整颊部边缘修整 ))
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labial border modeling (labial border modeling ( 唇部边缘修整唇部边缘修整 ))
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posterior border modeling (posterior border modeling ( 后部边缘修整后部边缘修整 ))
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唇系带Labial frenum
颊系带Buccal frenum
后部边缘封闭区Posterior seal border
颊侧翼缘区Buccal flange area
舌侧翼缘区Lingual flange area
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Another kind of method to make custom trayAnother kind of method to make custom tray
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Making final impressionMaking final impression
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3. Requirement of the 3. Requirement of the impressionimpression• The tissues should be pressed The tissues should be pressed
evenly.evenly.
• Enlarge the impression areas Enlarge the impression areas appropriately.appropriately.
• Making functional impressionMaking functional impression
• Keep the stable position.Keep the stable position.
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模型模型 (model or cast)(model or cast)
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Requirement of the castRequirement of the cast
• Border width 3-5mmBorder width 3-5mm• There should be about 10mm of the stonThere should be about 10mm of the ston
e in the thinnest parte in the thinnest part• The posterior border of the upper cast wThe posterior border of the upper cast w
as at least 2mm posteriorly to palatine fas at least 2mm posteriorly to palatine foveaovea
• At least 10 mm length from the anterior At least 10 mm length from the anterior part of the retromolar pad part of the retromolar pad
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PouringPouring the castthe cast
• Boxing methodBoxing method
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• General methodGeneral method
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Treatment of post-dam areaTreatment of post-dam area
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