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MCPHS Dental Materials Final Exam (all crossword vocab) Study Guide with Complete Solutions $10.49   Add to cart

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MCPHS Dental Materials Final Exam (all crossword vocab) Study Guide with Complete Solutions

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©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Monday, September 2, 2024 12:59 PM Page | 2 final setting time - Answer️️ -from start of mix to rigid mass that can be separated from impression, minimum 1-hour/safe to separate, not fully set 10 minutes - Answer️️ -disinfection time of alginate ...

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  • September 15, 2024
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MCPHS Dental Materials Final Exam (all
crossword vocab) Study Guide with
Complete Solutions

condensation silicone - Answer✔️✔️-impression material that is very hydrophobic, must

be poured immediately, usually has many voids


sodium phosphate - Answer✔️✔️-common additive to alginate that acts as a retarder to

slow down working time

hygroscopic expansion - Answer✔️✔️-if the gypsum becomes immersed into water or

comes in contact with water while setting the gypsum will take-up additional water;

swells

calcination - Answer✔️✔️-The process whereby water is lost when gypsum is heated

during manufacturing

study model cast - Answer✔️✔️-is a positive reproduction of both maxillary and

mandibular, is a positive reproduction of the hard & soft tissues of the oral cavity

wet strength - Answer✔️✔️-from start of pour to one hour after, water still present

one minute - Answer✔️✔️-mixing time for alginate

calcium sulfate dihydrate - Answer✔️✔️-main component of gypsum, still contains water

content

2-3 minutes - Answer✔️✔️-setting time of alginate

. - Answer✔️✔️-.


Page | 1

, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Monday, September 2, 2024 12:59 PM


final setting time - Answer✔️✔️-from start of mix to rigid mass that can be separated from

impression, minimum 1-hour/safe to separate, not fully set

10 minutes - Answer✔️✔️-disinfection time of alginate impression

syneresis - Answer✔️✔️-Water exudes causing the impression contracts

positive reproduction - Answer✔️✔️-study model/cast of oral structures

hysteresis - Answer✔️✔️-melting point much higher than boiling point, and gelling at

mouth temperature

setting expansion - Answer✔️✔️-the slight swelling of the gypsum while it is getting hard,

crystals push against each other creating porosities

dry strength - Answer✔️✔️-reached in 24-hours, water has evaporated , 2X as great as

wet strength

diatomaceous earth - Answer✔️✔️-silica, inert filler used in alginate; Gives the material

'body'

reversible hydrocolloid - Answer✔️✔️-impression material used for crowns, requires

special equipment, water cooled trays, can be softened and reused

exothermic reaction - Answer✔️✔️-gives off heat as it set or gets hard

Gilmore needle - Answer✔️✔️-device used to determine setting time of gypsum

Hydration - Answer✔️✔️-When mixed with water, the hemihydrate is converted back to

dihydrate

polysulfide material - Answer✔️✔️-rubber base impression material, used for dentures,

special spatula, long working time 4-6 minutes



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