Comparison of the disinfection levels of alginate impressions in the prosthodontics department at Dr. René Puig Bentz’s clinic (UNPHU).

This cross-sectional, in vitro, experimental study aims to compare the level of
disinfection of alginate impressions obtained in the prosthodontic area of the Dr. René
Puig Bentz Dental Clinic (UNPHU) when using two disinfectants: MD 520 and Lysol.
Dental impressions often come into contact with saliva, blood, and dental plaque, all
of which can contain a variety of microorganisms. Without proper disinfection
protocols, this contamination poses a significant cross-infection risk to dental
students, clinicians, and laboratory personnel.
A total of 60 alginate impressions were collected under standard clinical conditions.
Microbiological samples were obtained before and after disinfection, resulting in 120
samples total. The impressions were divided into two groups according to the
disinfectant used. MD 520 was applied by immersion for five minutes, and Lysol was
applied by spraying for three minutes, both in line with the manufacturers'
recommendations.
Microbial analysis identified and compared microorganisms present before and after
the disinfection process. The results showed a significant reduction in microbial load
in both groups. However, MD 520 was more effective, achieving higher levels of
disinfection than Lysol.
These results underscore the importance of selecting an appropriate disinfectant to
ensure biosafety and reduce the risk of cross-contamination in dental clinical practice.