RDA Work Environment and Conditions 3 — Questions and Answers
Question 1: Under OSHA's Bloodborne Pathogens Standard, dental offices must offer the hepatitis B vaccine to employees:
- Only if requested by the employee after 90 days
- At no cost to employees with occupational exposure (Correct answer)
- After the employee has worked for 1 year
- Only for employees who handle extracted teeth
Correct answer: At no cost to employees with occupational exposure
OSHA requires employers to offer the hepatitis B vaccination series at no cost to all employees with occupational exposure to bloodborne pathogens.
Question 2: The recommended lighting level for a dental operatory during clinical procedures is approximately:
- 200–500 lux for general overhead lighting
- 8,000–12,000 lux at the operative field via the dental light (Correct answer)
- 500–800 lux using standard fluorescent ceiling fixtures only
- 1,000–2,000 lux using a combination of natural and artificial light
Correct answer: 8,000–12,000 lux at the operative field via the dental light
The dental operating light should provide 8,000–12,000 lux at the operative field to enable precise clinical work.
Question 3: Which type of injury is MOST commonly reported among dental assistants due to repetitive hand and wrist movements?
- Trigger finger
- Carpal tunnel syndrome (Correct answer)
- Tennis elbow (lateral epicondylitis)
- Dupuytren's contracture
Correct answer: Carpal tunnel syndrome
Carpal tunnel syndrome, caused by repetitive motions and sustained wrist flexion, is the most commonly reported upper-extremity disorder among dental assistants.
Question 4: An exposure control plan in a dental office must be reviewed and updated:
- Every 5 years or when new procedures are added
- At least annually and whenever tasks or procedures change (Correct answer)
- Only when a needlestick injury occurs
- Whenever a new employee is hired
Correct answer: At least annually and whenever tasks or procedures change
OSHA requires the exposure control plan to be reviewed and updated at least annually and whenever new tasks or procedures affect exposure risk.
Question 5: Which personal protective equipment (PPE) is specifically required when using chemical disinfectants to wipe down dental surfaces?
- Surgical mask and safety goggles only
- Utility gloves, mask, eye protection, and protective clothing (Correct answer)
- Nitrile examination gloves and a face shield only
- Cotton gloves and a respirator
Correct answer: Utility gloves, mask, eye protection, and protective clothing
Utility gloves (not exam gloves) along with mask, eye protection, and protective clothing are required when handling chemical disinfectants during surface decontamination.
Question 6: A sharps container in a dental operatory should be replaced when it is:
- Completely full to the top
- Three-quarters full or at the fill line indicated on the container (Correct answer)
- Used for 30 days regardless of how full it is
- Placed in the operatory for more than 1 week
Correct answer: Three-quarters full or at the fill line indicated on the container
Sharps containers should be replaced when they reach three-quarters full (or the marked fill line) to prevent overfilling and accidental needlestick injuries.
Question 7: The Americans with Disabilities Act (ADA) requires dental offices to:
- Hire a set percentage of employees with disabilities
- Provide reasonable accommodations for qualified employees with disabilities (Correct answer)
- Install specific equipment for patients with mobility impairments in every operatory
- Offer reduced fees to patients who are disabled
Correct answer: Provide reasonable accommodations for qualified employees with disabilities
The ADA requires employers to provide reasonable accommodations to qualified employees with disabilities unless doing so causes undue hardship.
RDA Work Environment and Conditions 3
Under OSHA's Bloodborne Pathogens Standard, dental offices must offer the hepatitis B vaccine to employees: