Prosthodontics I alginate errors

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22 Terms

1
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delay in separating the cast from impression
poor stone surface
2
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air entrapped in the mix during spatulation
porosity
3
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delay in pouring the impression
dimensional changes
4
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incorrect water powder ratio
consistency
5
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inadequate mixing
consistency
6
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hot water using for mixing
consistency
7
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inadequate working or setting time
8
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premature tray removal from the mouth
loss of details
9
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tearing
10
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distortion
11
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slow rate of removal of impression from mouth / no snap quick removal of the tray
tearing
12
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distortion
13
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thin mix used
tearing
14
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presence of deep undercut
tearing
15
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inadequate material in tray
tearing
16
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movement during gelation
distortion
17
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delay in pouring the cast
distortion
18
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high water temperature / hot water used for mixing
inadequate working or setting time
19
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consistency
20
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incomplete spatulation
inadequate working or setting time
21
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low water powder ratio
inadequate working or setting time
22
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improper storage of alginate powder
inadequate working or setting time