title: Effect of irreversible hydrocolloid impressions on surface hardness of dental stone.
mesh_terms: D000464:Alginates; D002133:Calcium Sulfate; D003761:Dental Impression Technique / Q000295:instrumentation; D005069:Evaluation Studies as Topic; D006244:Hardness; D013499:Surface Properties
chemical_list: D000464:Alginates; D002133:Calcium Sulfate