Alginates, Chapter 35
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Potassium Alginate | Main ingredient, comes from sea kelp (seaweed) and acts as a thickener
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| Setting time | Time required for chemical action to be completed and when impression to be removed from patients mouth.
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| Working time | Time allowed for mixing, loading trays and positioning in the mouth
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| Undercuts | Recessed areas that are wider on the bottom than on top
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| Irreversible Hydrocolloid | Material that is not able to return to the sol state after becoming a gel. Like cake mix, once cake is cooked it can't go back to the powder mix
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| Single pour | One mix for both portions
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| Double pour | Pouring anatomic portion first then the art portion for base.
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| Anatomic portion | Natural anatomy portion of negative impression. (teeth, gingival ect)
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| Art portion | Base portion of cast; 1/3 overall ht)
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| Box method | Creating a secure base/box with wax and pouring plaster into it; 1 mix for both portions
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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