Online ISSN: 2515-8260

Author : Geetha, R.V


Sree lakshmi S.B; Jayalakshmi Somasundram; R.V Geetha

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 1, Pages 978-985

Dental impressions are categorized under semi-critical objects in dental practice and require high level
disinfection or sterilization. Sterilization in an autoclave will compromise the dimensional accuracy of the
impression hence it is not feasible. Until 1991, the recommended procedure for disinfection of impression
was rinsing under running water with which only 40% of bacteria, viruses and fungi were removed and
potential for transmission of microorganisms remained there. In recent times, a pre wash of the impression
with running water is advocated first to cast off all particles, blood and saliva prior to active disinfection
procedure. Disinfection of dental impression should be a routine procedure in the dental office and dental
laboratory. However, most of the dental professionals in private clinics, hospitals, dental schools and
prosthetic laboratories are not following the required protocols for impression disinfection. Keeping in
view the above findings, it is of utmost importance to raise the level of awareness in dental professionals
involved in any process of handling, transportation, processing and storage of the dental impressions.
With this background ,the aim of this review is to generate an update on the various techniques of
impression disinfection along with their mechanism of action , dimensional stability ,cause of infection on
impression material and effects of disinfectant on impression materials.