Microbial Communities and Infection Control in Dentistry

Colony-forming units

Separable cells creating visible colonies on agar.

Legionella

Bacteria causing Legionnaires' pneumonia.

Planktonic

Free-floating microbial communities in water.

Biofilm

Microbes forming protective layers on surfaces.

Biofilm composition

Contains bacteria, fungi, algae, and protozoa.

DWUWLs

Dental unit waterlines where biofilm can form.

Bacterial contamination reduction

Minimized by self-contained reservoirs and microfiltration.

Sterile water

Used for surgeries involving bone exposure.

Saliva ejectors

Devices that can cause backflow during use.

Backflow mechanism

Occurs when mouth pressure is lower than evacuator.

Microfiltration cartridges

Devices filtering out bacteria from water.

Chemical agents

Substances used to reduce microbial contamination.

Irrigant

Fluid used during surgical procedures.

Protective slime layer

Biofilm's barrier against environmental threats.

Human immunodeficiency virus

Virus unable to multiply in DWUWLs.