Comparative evaluation of the anti-microbial efficacy of three different disinfectants by immersion & spray techniques on elastic impression materials

Abstract

Aim: Dental impressions frequently contain bacteria that can spread from patients to dental
personnel, posing a risk of cross infection. This in-vivo study evaluated the microbial load on
impressions (dentulous) and the effectiveness of different disinfectants in reducing the
microorganisms on impression surfaces following immersion and spray disinfection with
three disinfectants for 10 minutes.
Materials and Method: Alginate and Polyvinyl siloxane (PVS) impression materials were
used to make a total of 50 dentulous impressions. Sodium Hypochlorite, Glutaraldehyde (as
immersion), and Isopropyl alcohol were utilized as disinfectants (as spray).
Results: The microbial load on the irreversible hydrocolloid impression was twice that of the
PVS impression, according to the findings. Microbial growth was reduced by all
disinfectants.
Conclusions: The most successful treatment was sodium hypochlorite, followed by
glutaraldehyde and isopropyl alcohol