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8039 Dental

A male 45 years old wants his missing teeth to be replaced. Intraoral examination reveals Kennedy class 4 edentulous maxillary arch. Impression is made with alginate. All of the following are true about the material except:

AThe compressive strength doubles during the first 4 min after gelation
BIt is a viscoelastic material
CIts tear strength is increased when the impression is removed along a vertical path with a snap
DImpression should be removed from the mouth within 3 min
Dental
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