Dimensional stability of seven elastomeric impression materials immersed in disinfectants.
Dental impressions can increase the transmission of microorganisms and infections. The purpose of this study was to assess the influence of three disinfectant solutions on the dimensional accuracy of seven elastomeric impression materials. Impressions of a test block were either left untreated (controls) or treated by immersion in a disinfectant solution. Measurements were taken on die stone replicas of the impressions. Comparisons were made between (1) the measurements for the variations in the nontreated impressions and those for the treated impressions and (2) measurements for the treated impressions and the test block. Results indicated that the aminoamphoteric agent or glutaraldehyde derivative-based solutions created little change in relation to the initial dimensional accuracy of the impression products. However, the sodium hypochlorite solution often leads to expansion by comparison with controls. By comparison to the test block, this expansion then makes it possible in most cases to obtain better dimensional accuracy than initially. Within the limits of this study this expansion could lead to an improvement in clinical fixed prosthodontic procedures.
Thouati
A
A
University of Lille II, France.
Deveaux
E
E
Iost
A
A
Behin
P
P
D000447:Aldehydes / Q000737:chemistry; D002133:Calcium Sulfate; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D019551:Dental Disinfectants / Q000737:chemistry*; D003760:Dental Impression Materials / Q000737:chemistry*; D003761:Dental Impression Technique / Q000295:instrumentation; D004338:Drug Combinations; D004987:Ethers / Q000737:chemistry; D005557:Formaldehyde / Q000737:chemistry; D005663:Furans / Q000737:chemistry; D005976:Glutaral / Q000737:chemistry; D007101:Immersion; D008422:Materials Testing; D003765:Models, Dental; D011108:Polymers; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D012408:Rubber / Q000737:chemistry*; D012826:Silicone Elastomers / Q000737:chemistry; D012973:Sodium Hypochlorite / Q000737:chemistry; D013499:Surface Properties
D000447:Aldehydes; D019551:Dental Disinfectants; D003760:Dental Impression Materials; D004338:Drug Combinations; D004987:Ethers; D005663:Furans; D011108:Polymers; D000644:Quaternary Ammonium Compounds; D012826:Silicone Elastomers; D005557:Formaldehyde; C030972:gigasept; D012408:Rubber; D012973:Sodium Hypochlorite; D005976:Glutaral; D002133:Calcium Sulfate