[Dimensional accuracy of dental gypsum casts after immersion in stable chlorine dioxide disinfectant].
To evaluate the changes in dimensional accuracy of dental gypsum casts after immersion in stable chlorine dioxide (SCD) disinfectant solution.



Each of 90 specimens was made of type III,type IV and type V dental stone, respectively,which were further divided into 9 groups (n=10). The gypsum casts were immersed in 3.71,7.41 and 11.12 mmol/L SCD disinfectant solution for 5, 10 and 15 min, respectively. The dimensional accuracy of dental gypsum casts were measured with outside diameter in micrometer before and after immersion. The data were analyzed using analysis of variance (ANVOA) at 95% confidence level.



There were no significant changes in dimensional accuracy of all dental gypsum casts treated by same concentration of SCD solution for 5, 10 and 15 min. And the dimensional accuracy of all dental gypsum casts treated with different concentrations of SCD for the same duration did not change.



SCD disinfectant solution has no impact on dimensional stability of dental gypsum casts.
Yang
Xiao-hong
XH
Department of Prosthodontics, Stomatology Hospital, Zunyi Medical College, Zunyi 563003, China.
Zhu
Guo-wei
GW
Chen
Lin
L
D002133:Calcium Sulfate; D017606:Chlorine Compounds / Q000494:pharmacology*; D003760:Dental Impression Materials; D004202:Disinfectants / Q000494:pharmacology*; D004203:Disinfection / Q000379:methods; D007101:Immersion; D003765:Models, Dental; D010087:Oxides / Q000494:pharmacology*
D017606:Chlorine Compounds; D003760:Dental Impression Materials; D004202:Disinfectants; D010087:Oxides; C025109:chlorine dioxide; D002133:Calcium Sulfate