Mohammad Zulkarnaen*
An important factor in the manufacture of dentures is the molding procedure. The ADA recommends implementing printed material desinfecion techniques aimed at reducing cross-contamination. The important thing to note is the whether there is a change in the dimensional stability of the work model. The disinfection method recommended is by spraying. This study aims to determine the effect of spraying roselle flower extract and sodium hypochlorite solution on the dimensional stability of the work model.