Chapter 23 and 24 Key Terms Flashcards
acute exposure
high levels of exposure over a short period
chemical
any substance or mixture of substances having a chemical composition and characteristic
chemical inventory
list of all substances used in the office that contain chemicals
chronic exposure
continuous or repeated contact with a substance over a long period
contaminated waste
waste that is contaminated from a potentially infectious body fluid of a patient
flammable
materials that are readily capable of catching fire
globally harmonized system of classification and labeling of chemicals (GHS)
organization that defines and classifies the hazards of chemical products and communicates thealth and safety information on labels and SDS
hazard class
classification that provides a number or name of hazardous properties that present a potential hazard to human health and safety
hazard classification
systematic standardized statement that divides health and physical hazards into separate classifications
hazard statement
statement assigned to a hazard class and category that describes the nature of the hazards of a chemical, including, where appropriate, the degree of the hazard
hazardous waste
waste that poses a risk to humans or to the environment if discarded into landfill or poured down the drain
health hazard
chemical, physical or biological exposure that can affect an employee’s short of long term health
infectious waste
waste that includes biologic materials capable of transmitting an infectious disease
label elements
the pictogram, hazard statement, signal word, and precautionary statement for each hazard class and category
oxidizers
type of chemical that will react or cause a chemical to react with oxygen causing a severe fire hazard
physical hazard
chemical that can be combustible liquid, a compressed gas, an explosive material, flammable-reactive, or water-reactive and is a health hazard
pictograms
graphic elements used on a hazard label to identify the specific hazard class and category
product identifier
name or number used for a hazardous chemical on a label or in the SDS
precautionary statement
phrase that describes recommended measures to take to minimize or prevent adverse effects from exposure to a hazardous chemical or the improper storage or handling of a hazardous chemical
regulated waste
items that have been deemed to pose a risk to humans or the environment and for which disposal is regulated by the state for medical waste and the environmental protection agency (EPA) for chemical waste
signal word
two words used on the SDS “warming” for less severe hazard categories and “danger” for more severe hazard categories
toxic chemicals
chemicals that can have a fatal or toxic effect to humans
toxic waste
waste that can have a toxic effect to humans
antiretraction device
mechanism that prevents entry of fluids and microorganisms into waterlines as a result of negative water pressure; also called “suck back”
biofilm
slime-producing bacterial communities that can harbor fungi, algae, and protozoa
colony-forming units (CFUs)
number of separable cells on the surface of a semisolid agar medium that create a visible colony
dental unit waterline (DUWL)
small-bore tubing usually made of plastic, used to deliver water through a dental unit during dental treatment
heterotrophic bacteria
bacteria that use organic carbon as food; protozoa fungi, and most bacterial fall into this category
immunocompromised
having a weakened immune system
legionella
bacteria that can cause a certain type of pneumonia called legionnaires’ pneumonia
microfiltration
process by which contaminated fluid is passed through a pore-sized membrane to separate microorganisms
planktonic
describes small organisms that float or drift in bodies of salt water or fresh water
self-contained water reservoir
container attached to a dental unit that is used to hold and supply water or other solutions to handpieces and air-water syringes
