Extra Positive Air Pressure to Prevent Microbial Contamination in Dental Handpieces: An Experimental Study.

ABSTRACT:

Objectives

This study aims to evaluate the effect of applying extra positive air pressure (AP) in dental handpieces (HPs) on preventing external bacterial penetration.

Materials and methods

To investigate the suck-back phenomenon during HP operation, we examined the correlation between AP variations and the occurrence of suck-back under controlled conditions. To assess the suck-back phenomenon during HP operation, AP changes were evaluated by monitoring water displacement using a glass tube or a manometer. An extra AP supplier (EAPS) was connected to the exhaust airlines of the HP and operated for 5 seconds to control AP. To evaluate whether AP control could prevent bacterial penetration into the HP, bioburden tests were conducted by immersing the HP in five bacterial cultur

SUBMITTER: Park D 

PROVIDER: S-EPMC12345249 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature