DANB Dental Waste Management 1 — Questions and Answers
Question 1: How should extracted teeth containing amalgam restorations be disposed of?
- As regulated medical waste, not as hazardous waste, unless they will be sent to a recycler (Correct answer)
- In regular trash
- By incineration only
- By flushing down the drain
Correct answer: As regulated medical waste, not as hazardous waste, unless they will be sent to a recycler
Extracted teeth with amalgam should be disposed of as regulated medical waste (not incinerated due to mercury vapors) or sent to an amalgam recycler. They should not be placed in biohazard waste intended for incineration.
Question 2: What is the proper disposal method for used anesthetic cartridges?
- Place in sharps containers as they may contain residual medication and have needle penetration points (Correct answer)
- Dispose in regular trash after removing the needle
- Rinse and recycle with glass containers
- Return to the manufacturer for refilling
Correct answer: Place in sharps containers as they may contain residual medication and have needle penetration points
Used anesthetic cartridges should be disposed of in sharps containers because they may contain residual pharmaceutical waste and their rubber stoppers have been penetrated by needles, posing a potential sharps hazard.
Question 3: What dental materials are considered hazardous waste under EPA regulations?
- Amalgam waste, lead foils from old film packets, and certain disinfectants/chemicals (Correct answer)
- Only used cotton rolls and gauze
- Paper products from the operatory
- All plastic disposable items
Correct answer: Amalgam waste, lead foils from old film packets, and certain disinfectants/chemicals
EPA-regulated hazardous waste in dental offices includes scrap amalgam and amalgam captured by traps/filters, lead-containing waste, certain photographic chemicals (fixer solution), and some concentrated disinfectants.
Question 4: What is the purpose of amalgam separators in dental offices?
- To capture amalgam particles from wastewater before it enters the municipal sewer system (Correct answer)
- To separate different types of amalgam alloys for reuse
- To filter mercury from the office air supply
- To sort dental instruments made from different metals
Correct answer: To capture amalgam particles from wastewater before it enters the municipal sewer system
The EPA Dental Rule requires amalgam separators to capture amalgam particles from dental office wastewater, preventing mercury contamination of water treatment facilities and the environment.
Question 5: How should pharmaceutical waste (expired medications) be disposed of in a dental office?
- Through a reverse distributor or hazardous waste contractor, not through regular waste or the sewer system (Correct answer)
- By flushing down the drain
- By mixing with regular office trash
- By returning to the patient
Correct answer: Through a reverse distributor or hazardous waste contractor, not through regular waste or the sewer system
Pharmaceutical waste including expired local anesthetics, fluoride compounds, and controlled substances must be disposed of through authorized contractors or reverse distributors, never through regular waste streams or sewer systems.
Question 6: What color coding is used for biohazardous waste containers in dental offices?
- Red bags or containers marked with the biohazard symbol (Correct answer)
- Blue bags for all dental waste
- Clear bags with a green label
- No specific color coding is required
Correct answer: Red bags or containers marked with the biohazard symbol
OSHA requires that biohazardous/regulated medical waste be placed in red bags or containers clearly marked with the universal biohazard symbol, ensuring proper identification, handling, and disposal.
DANB Dental Waste Management 1
How should extracted teeth containing amalgam restorations be disposed of?