How-to · Fundamentals
Infection control basics every Texas dental assistant learns first
Before you learn to pass instruments or chart a single tooth, you learn this. Infection control is the foundation of the whole job — and the one skill where "close enough" is never allowed. Here are the fundamentals, in plain English.
The golden rule: standard precautions
Standard precautions mean you assume any patient's blood and saliva could be infectious — every patient, every visit, no exceptions and no guessing. It protects patients, protects you, and removes judgment calls from safety.
PPE: your daily uniform
Gloves, mask, eye protection, and a protective gown or clinic jacket — donned before patient care and changed between patients. The habit that matters most: gloves are single-use and task-specific. Touch a drawer handle with a contaminated glove and that handle is now contaminated too. Great assistants develop an almost physical sense of what is "clean" and what is "dirty" at every moment.
Surfaces: barriers or disinfection — always one or the other
Anything touched during treatment — light handles, chair buttons, the air/water syringe — either gets a disposable barrier that is swapped between patients, or gets cleaned with an appropriate disinfectant. Between every single patient. That is what a proper "room turnover" includes, and it is a skill offices absolutely notice.
Instruments: the one-way flow
Every office has a sterilization area with the same logic: contaminated things move in one direction and never double back.
Autoclaves are checked with indicators and routine spore testing to prove they are actually sterilizing — you do not assume a machine works, you verify it. You will run this whole cycle so many times in training that it becomes muscle memory.
Sharps: respect the pointy end
Used sharps go directly into the puncture-resistant sharps container — never recapped by hand with two hands, never left on a tray for someone else to find. Most needlestick injuries are preventable with technique, which is why technique is drilled from week one.
What Texas expects of you
Infection control is not just good practice in Texas — it is part of the required coursework on the path to becoming a Registered Dental Assistant, alongside radiology and jurisprudence. The Texas State Board of Dental Examiners sets the official requirements, and our program is built to align with them (the full path is laid out in our RDA registration guide).
How to start practicing this today
Quiz yourself with the free RDA practice exam — infection control questions included, with instant explanations. Then poke around the Skills Lab to see how PDA students drill these routines until they are automatic.
Learn it right the first time.
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