©SOPHIABENNETT
EXAM_SOLUTIONS GUARANTEED SUCCESS 2024/2025 ACADEMIC YEAR
©SOPHIABENNETT 9/2/24 2024/2025
, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Monday, September 2, 2024 12:59 PM
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
Page | 2
EXAM_SOLUTIONS GUARANTEED SUCCESS 2024/2025 ACADEMIC YEAR
©SOPHIABENNETT 9/2/24 2024/2025
, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Monday, September 2, 2024 12:59 PM
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
Page | 2
