Figure 2.
Schemes representing the topographic distribution and the tracer levels after the dental procedures using the following: air turbine (A), contra-angle (B), and ultrasonic scaler (C) handpieces. Each red dot represents a measurement site on the dental unit. The 3 sites on the dental light source were averaged. The dimension of the dot represents the tracer level. The spreading pattern of spatter and aerosols close to the tip of each handpiece is displayed under each corresponding scheme. Air turbine produced the finest and farthest-spreading microparticles. CFU: Colony-forming units. cm2: Square centimeter. X: Contamination value of each site.