CHAPTER 23- CHEMICAL AND WASTE MANAGEMENT

Question 1

Hazardous chemical

Answer 1

any chemical that can cause physical hazard or a health hazard

Question 2

how do you know if a chemical is hazardous

Answer 2

it ignites
can react or explode when mixed with other substances
corrosive
is toxic

Question 3

three primary methods of chemical exposure

Answer 3

inhalation
skin contact
ingestion

Question 4

What is acute chemical toxicity?

Answer 4

high levels of exposure over a short period of time

Question 5

what is chronic chemical toxicity?

Answer 5

low levels of expore over a long period of time

Question 6

MSDS/SDS

Answer 6

Material safety data sheet

Question 7

what is the MSDS/SDS

Answer 7

The MSDS is a sheet of information with information regarding that specific chemical

Question 8

What kind of hand protection shoud you use when handling chemicals?

Answer 8

utiity gloves.

gloves made from chemical resistant material

Question 9

what kind of gloves should you NOT use when handling chemicals?

Answer 9

examination gloves. doesnt provide adequate protection against chemicals

Question 10

what kind of PPE should you wear when handling chemicals

Answer 10

eye protection
utility gloves
protective clothing

Question 11

Amalgam

Answer 11

silver and mercury tooth filling

Question 12

what should you do if mercury spills?

Answer 12

you MUST always use a spill kit to dispose of the spilled mercury and call someone to pick it up

Question 13

what does the mercury spill kit include?

Answer 13

mercury-absorbing powder
mercury-absorbing sponge
disposable bag

Question 14

hazardous waste

Answer 14

a chemical with certain properties that could pose a danger to human health and the environment

Question 15

two types of waste in the dental office

Answer 15

regulated waste

unregulated waste

Question 16

difference between regulated waste and non regulated waste

Answer 16

regulated waste : cannot be disposed in regular waste/garbage. must be disposed in a special waste container to be picked up

unregulated waste : can be disposed in regular garbage/waste.

Question 17

is scrap amalgam regulated or non regulated waste. why?

Answer 17

it is regulated waste because it contains mercury which is harmful.

Question 18

what kind of waste is lead?

Answer 18

regulated waste

Question 19

what does the lead in the xray film look like. Is this regulated or non regulated waste?

Answer 19

looks like aluminum foil and this is regulated waste

Question 20

what is the Hazard communication standard (HCS)

Answer 20

“employee right to know” law.

employers must inform employees about hazards of chemicals and exposure in the workplace

Question 21

who regulates HCS

Answer 21

OSHA

Question 22

WHMIS

Answer 22

workplace hazardous material information system

Question 23

Chemical inventory

Answer 23

list of all products used in the office that contains chemicals

Question 24

what should chemicals not in their orginal container have?

Answer 24

label to indicate that this is a chemical

Question 25

what is NFPA

Answer 25

National fire protection association

Question 26

what is the NFPA system?

Answer 26

numeric rating from 0-4 and colour coding of chemicals and its hazards

Question 27

what does blue indicate in the NFPA system

Answer 27

health hazard

Question 28

what does red indicate in the NFPA system?

Answer 28

flammability

Question 29

what does yellow indicate in the NFPA system?

Answer 29

reactivity

Question 30

what does white indicate in the NFPA system?

Answer 30

special hazard

Question 31

dental materials that may be regulated

Answer 31

mercury and dental amalgam lead foil and shields (xray) xray fixer solution xray developer solution

Question 32

what does non regulated waste include?

Answer 32

contaminated waste materials saliva soaked gauze used patient bibs surface barriers

Question 33

what type of waste is extracted teeth?

Answer 33

unregulated waste in canada | regulated waste in the usa

Question 34

how should you not sterilize extracted teeth with amalgam

Answer 34

heat sterilization because the heat may create toxic mercury vapours

Question 35

how should you sterilize extracted teeth with amalgam

Answer 35

cold soak

Question 36

where should scrap dental amalgam be stored?

Answer 36

in a dry airtight container

Question 37

where can lead foil from xray be recycled?

Answer 37

licensed recovery facility

Question 38

can you pour down solutions with glutaraldehyde of more than 2% down the drain?

Answer 38

no. you cannot

Question 39

contaminated waste

Answer 39

waste that is contaminated from a potentially infectious body fluid of a patient