This is a continuation of the column from last week with regards to the issues involving the water used in a dental office. The information was obtained from the ADA website.
Is the water in my dentist’s office safe?
Scientific reports have not linked illness with water passing through dental waterlines. However, patients should feel free to ask their dentist about the quality of their dental treatment water or any other aspect of their practice. To help reduce the number of microorganisms in treatment water, the Association recommends that dentists follow the infection control guidelines of the CDC and ADA. This is in addition to other precautions that your dentist may have in place.
How soon will dentists have devices meeting this new (200 CFU/mL) goal in their offices?
The current trend is toward dental units with features to enhance water quality. The FDA has recently cleared a number of new products to improve water quality and time is needed to evaluate their effectiveness. That’s why the ADA is continuing its leadership in education and research in this area. The ADA strongly urges manufacturers to submit their devices for dental unit waterline use to the ADA Seal of Acceptance Program for scientific evaluation, which allows dentists to choose products with even greater confidence.
The product I currently use is specially formulated to be continuously present in the dental water lines and keeps lines clean. An effervescing tablet is added to a self contained water bottle each time it is refilled. Achieving clean water can really be that easy.
Does the ADA oppose government regulations on this issue–even if legislators adopt the ADA’s own goal?
Yes. The ADA favors a voluntary goal and strongly opposes any effort to turn a scientific goal into a legal dictate. The dental profession has an excellent, proactive record on this and other safety issues. In fact, the dental profession has led the way when it comes to improving water quality. Because of the ADA statement issued in 1995, the research and dental industries have responded very positively to this issue. The number of products (approximately 25) cleared by the FDA for improving water quality reflects this response.
What should patients know about waterlines?
Patients should always feel free to ask their dentist about water quality or any other aspect of their practice. Patients also should inform their dentist of any health problems and medications they might be taking so the patient and dentist can make the right treatment decisions.
This may be a small aspect that you never considered when going to the dentist. I am sure that most patients are concerned about proper sterilization of instruments and receiving treatment in a clean office. Wouldn’t it be nice to know that the water being sprayed into your mouth is clean?

This column and the one to follow discuss the issues involved with the water used in the dental office. Water that is used in the dental office is usually the same town water that people drink, use to cook and bathe in. However, in the dental office, the water sits around in plastic tubing and “things” can grow in plastic tubing. Wouldn’t you like to know that the water being squirt into your mouth is clean?
I am bringing this up because it is an often overlooked part of the dental office and is important to consider. The information was obtained from the ADA website.
What are biofilms?
Biofilms are microscopic communities that consist primarily of naturally occurring water bacteria and fungi. They form thin layers on virtually all surfaces, including dental water delivery systems. These common microbes or germs accumulate inside things like showerheads, faucets and fountains, and in the thin tubes used to deliver water in dental treatment.
Will biofilms harm me?
Scientific reports have not linked illness to water passing through dental waterlines. In our environment, we are exposed to countless germs or bacteria. Yet, exposure to these common microbes does not mean that an individual will get an infection or a disease. However, when a person’s immune system is compromised because of age, smoking, heavy drinking, being a transplant or cancer patient or because of HIV infection, he or she may have more difficulty fighting off the invading germs. This is why the ADA encourages patients who may have weakened immune systems to inform their dentist at the beginning of any treatment. That way, the patient and dentist together can make the right treatment decisions.
What has been done to prevent me from being exposed to someone else’s saliva during dental treatment?
The ADA recommends that dentists follow the infection control guidelines of the ADA and CDC. These recommendations include the sterilization of dental instruments and the flushing of waterlines between patients. Additionally, the recommendations call for the installation and maintenance of anti-retraction devices, where appropriate. All these measures should help prevent exposure to someone else’s saliva.
What is the ADA goal for dental unit water?
In 1995, the ADA set a goal for water quality. It called for equipment to be available by the year 2000 that can provide unfiltered water with no more than 200 CFU/ml (colony-forming units per milliliter). That’s the same standard as for kidney dialysis machines, and it’s a goal that manufacturers are working toward. The Food and Drug Administration has recently cleared a number of new products to improve water quality and time is needed to evaluate their effectiveness. The Association encourages manufacturers of new products to submit those products to the ADA Seal of Acceptance program for evaluation.
I will continue next week with some more information.