BACKGROUND The high numbers of heterotrophic microorganisms that have been cultured from dental unit waterlines (DUWs) have raised concern that this water may exceed suggested limits for heterotrophic plate counts (HPCs). The main purpose of this investigation was to examine HPC variability in DUWs and to examine in detail the effect of laboratory processing of water samples on HPC values. ME...

This case report highlights the risks that may be associated with amoebae in the water of a dental unit. A woman with contact lenses visited her dentist for replacement of a bridge. During the treatment, a stream of water was directed from the handpiece into her right eye. Because of subsequent pain in the eye, the patient consulted several ophthalmologists, who discovered abrasive lesions of t...

Bacterial invasion of dental unit water lines is a global issue, which if left untreated, leads to formation bacterial biofilm within the lines. The aim this study was determine number colony forming units (CFU) in waterlines Rehman college dentistry. Samples from air-water syringes 44 different various departments hospital were collected. Tip each syringe heated using direct flaming eliminate ...