The effects of different storage conditions on polyether and polyvinylsiloxane impressions.
While being shipped to a laboratory, impressions can be exposed to excessive temperatures. This study compared the effects of different time and temperature storage conditions, including temperature extremes of 66 C and -10 C, on the accuracy of addition silicone and polyether impressions. The greatest distortion generally occurred as a result of the 66 C temperature extreme. The authors recommend that impressions be poured in stone according to manufacturers' specifications before being shipped to a dental laboratory.
Department of Operative Dentistry, University of Missouri-Kansas City School of Dentistry 64108, USA.
J H
JH
Purk
M G
MG
Willes
D E
DE
Tira
J D
JD
Eick
S H
SH
Hung
D002133:Calcium Sulfate / Q000737:chemistry; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003080:Cold Temperature; D003734:Dental Casting Investment / Q000737:chemistry; D003735:Dental Casting Technique; D003760:Dental Impression Materials / Q000737:chemistry*; D003761:Dental Impression Technique / Q000295:instrumentation; D004987:Ethers / Q000737:chemistry*; D006358:Hot Temperature; D008422:Materials Testing; D003765:Models, Dental; D011108:Polymers / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D012117:Resins, Synthetic / Q000737:chemistry; D012833:Siloxanes / Q000737:chemistry*; D013193:Stainless Steel; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors
D003734:Dental Casting Investment; D003760:Dental Impression Materials; D004987:Ethers; C022821:Impregum; D011108:Polymers; D011145:Polyvinyls; D012117:Resins, Synthetic; D012833:Siloxanes; C034183:vinyl polysiloxane; D013193:Stainless Steel; D002133:Calcium Sulfate