ALGINATE IMPRESSION MATERIAL

• Main Authors: ODA MICHIKO, CHIHARA SHOICHI, HAYASHI RIKA
• Format: Patent
• Language: English
• Published: 03.08.1999
• Edition: 6
• Subjects: HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES

PROBLEM TO BE SOLVED: To obtain an alginate impression material having slight swelling by water absorption and shrinkage, etc., and capable of suppressing weight change of gel substance even when a gel substance after obtaining impression is immersed and stored in water by making the impression material include a specific two kinds of calcium sulfates and disodium hydrogen phosphate. SOLUTION: This alginate impression material comprises 5-30 wt.%, preferably 5-25 wt.%, more preferably 7-23 wt.% gelling agent comprising a mixture of (A) calcium sulfate dihydrate with (B) calcium sulfate hemihydrate and used in (1:19) to (19:1), preferably (1:9) to (9:1), more preferably (1:4) to (9:1) weight ratio of the component A to the component B, (C) 0.01-2.0 wt.%, preferably 0.02-1.8 wt.% more preferably 0.05-1,5 wt.% disodium hydrogen phosphate as a gelation adjusting agent, (D) 3-25 wt.% alginate, (E) filler and (F) as necessary, a strain controlling agent, a compatibility-improving agent, a dust preventing agent, a coloring agent, a flavoring agent, etc.