Applied Science



Purpose: To understand the implications and purpose of the Bloodborne Pathogens standard, Waste Management, and how these apply to dentistry. To identify both biological and chemical hazards found in the dental office and how to implement the requirements and recommendations involving potential hazards exposed to dental team members.

Who is your Audience? Imagine you are the Infection Control Lead in a dental office. Your goal is to educate staff of OSHA, BPS, and CDC practices to protect yourself, the dental team and our community. Your classmates will also learn from you and your efforts to recognize safety concerns. Provide your readers with concrete facts, not your opinion. You are evolving to be a leader in dentistry!

Required Reading to Complete the Assignments: Chapter 19 and Internet Resources listed

below will assist you as you proceed to complete both Part One and Part Two. These resources

will also provide great insight as you move forward in your dental assisting education and

career. I highly recommend you save these sites as “Favorites” or Bookmark them.

Quick Reference Guide to the Bloodborne Pathogens Standard

Bloodborne Pathogens and Needlestick Prevention

Interim Infection Prevention and Control Guidance for Dental Settings During the COVID-19 Response

Hazard Communications

Hazard Communication Safety Data Sheets (Quick Card)

Hazard Communication Standard: Labels and Pictograms


Read the Case Study below. Identify any Hazard Communication violations/problems that contradict CDC recommendations and OSHA, and Bloodborne Pathogen Standard requirements. After you identify the concern, provide the correct procedures or protocols and support this correction with a rationale. Remember, the dental assistant is in a position of authority as a responsible team leader that manages Infection Control Prevention and Safety.


  1. Problem: With a contaminated gloved hand, the dental assistant (DA) scratched her eyebrow.

Correction: Remove contaminated gloves, perform hand hygiene then scratch her eyebrow.

Rationale: In a contaminated zone, DHCW should never touch any unprotected body part. To reduce transmission of any pathogen, removal of the contaminated glove and performing hand hygiene follows CDC and Bloodborne Pathogen standards.

Identify the errorprovide the correct procedure or standard, and provide the resource that supports your claim.

Here is the Case Study:

Current Time 2020.

The receptionist texted Mr. Hersh to come to the reception area because the clinical team is ready. Mr. Hersh arrived then the dental assistant (DA) brought him to treatment room B. The DA confirmed Mr. Hersh was getting a composite filling on his lower right 1st molar. (You should be asking your self – we are learning tooth numbering systems – using the universal numbering system this is tooth number ?)

Mr. Hersh indicated that he has not been feeling well for several days, “It’s hard to breathe sometimes”. The DA said we will keep you in an upright position and work quickly but safely to get you home.

Because the procedure will produce bio-aerosols, both the DA and dentist donned (placed) their personal protective equipment (PPE) in this order: nitrile examination gloves, face shield, surgical mask, and disposable gowns.

During the procedure, the patient required more local anesthetic to be comfortable. The dentist removed the cap from the needle/syringe, handed the cap to the assistant. The DA placed the cap on the counter. When done administering the anesthetic, the dentist handed the syringe to the DA. She carefully recapped the needle with two hands to avoid getting punctured. The DA disassembled the needle from the syringe then disposed of the needle in the contaminated wastebasket.

During the procedure, the DA’s face shield began to fog up and she could not see to assist the dentist. She slightly lifted the face shield to defog her shield and she was able to resume assisting. To keep the dentists’ instruments clean during the procedure, he asked that before he uses it again for the DA to wipe the instruments clean. She chose to saturate cotton/gauze with alcohol to remove smudges and or particles. The dentist appreciated her keeping the instruments clean.

The patient did very well without complications. While the DA removed the patient napkin from Mr. Hersh then disposed of it in the contaminated waste container, the dentist doffed (removed) his PPE in this order:  examination gloves, shield, mask, gloves, and gown. He then washed his hands for 5 seconds then escorted the patient to the reception area.

The DA began to clean and disinfect the treatment room. She was wearing all her PPE but replaced her face shield her prescription glasses. She collected all items that had visible blood and placed in the biohazardous waste container. She couldn’t remember if the container needed a red liner and a universal biohazardous waste symbol. It had been 3 years since the office had OSHA training. She continued to clean and disinfect the surfaces that were contaminated. With the disinfectant, she sprayed the counter that had blood on it. The disinfectant solution splashed into her right eye. She didn’t know what to do! The spray bottle used to disinfect did not have a label of any kind. Her eye wasn’t burning anymore, so she didn’t think much more about it.

Here is the DA. Can you identify any PPE concerns?

PPE Concerns?

The End of the Case Study.

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