EFFECTIVENESS OF A PROFESSIONAL FORMULA DISINFECTANT FOR IRREVERSIBLEHYDROCOLLOID

In this study, the effectiveness of Professional Lysol (PL) disinfecta nt in both its spray and solution forms was evaluated as a surface dis infectant for irreversible hydrocolloid (IH) impressions. Sixteen impr essions of a typodont were made with IH, immersed in a microbial broth , and then rinsed in running tap water. The impressions were then trea ted as follows: four were immersed in PL for 2.5 minutes; four were sp rayed by PL and stored for 10 minutes; four were immersed in 2% glutar aldehyde for 10 minutes; four were untreated. Pretest plates showed an average of 421 colonies per plate (c/p). The glutaraldehyde group sho wed 0.00 c/p. The PL spray group showed 1.75 c/p. The PL immersion gro up showed 19.00 c/p and showed evidence of surface deterioration in th e IH. The untreated group showed 426.25 c/p.