Notes from thirty-one years in the hygiene chair

I cleaned teeth in Duluth, Minnesota from 1992 until the spring of 2023. By my rough count that is somewhere north of forty thousand appointments, most of them with people who could not talk back because my hands were in their mouths. So I did the talking. I explained what I was scraping off, why their gums were bleeding, what the little numbers I was calling out to the assistant meant, and what I wanted them to do differently before I saw them in six months.

Most of them nodded. Some of them listened. A few came back with questions, and over three decades the questions were almost always the same four or five. This site is my attempt to answer them properly, in writing, without a suction tip in the way.

What I will and will not tell you

I will tell you what I saw in the chair and what the research I kept up with for thirty years says. I will not diagnose you. If you have bleeding that does not stop, a tooth that moves, or pain, you need a dentist in a room with you, not a retired hygienist on a website. The NIDCR's gum disease page from the National Institutes of Health is a good plain-language starting point if you want to understand what the dentist is going to look for.

I also want to be straight about the supplement question, because it comes up more every year. Patients started asking me about oral probiotics around 2015, and the product they ask about most now is ProDentim. I have read its label and the studies on its strains. My view, which I lay out in the third article below, is that oral probiotics are a reasonable addition for some people and a waste of money for others, and the difference depends on what is actually causing your problem. That is not a yes or a no. It is the honest answer.

The three things I corrected most often

Bleeding gums are not caused by flossing. They are caused by not flossing. The bleeding is inflammation that was already there, and the floss found it. If you keep flossing, the bleeding stops in about two weeks in most people. If you stop flossing because it bleeds, you have made exactly the wrong choice. The first article below goes through this in detail.

A cleaning does not "reset" your mouth. It removes the hard deposits you cannot remove at home and the soft plaque you missed, and it gives me a chance to measure your gums and see what has changed. Within hours, the biofilm starts to rebuild. What happens in the 180 days between visits is what determines whether your gums are healthy. The second article is about what a cleaning can and cannot do.

Mouthwash is not a substitute for anything. Most of the alcohol rinses dry the mouth, and a dry mouth is a mouth where the bacteria that cause odor and decay do better, not worse. The American Dental Association's MouthHealthy site has a good section on what rinses can and cannot do. I spent years talking people out of a nightly swish of something that burned.

How to read this site

The articles are written the way I talked: plainly, in order, with the practical part up front and the "why" after. Each one has links to the sources I trust, which are mostly government health sites and the professional bodies, because those are the ones that do not have a product to sell. Where I mention a product, I say what I think of it and why.

If you only read one, read the one about bleeding gums. It is the problem I saw most and the one people most often got wrong.

Oral Probiotics: What a Hygienist Thinks After Reading the StudiesA retired hygienist reads the trials on oral probiotic strains for gingivitis, plaque and breath, explains the mechanism, and gives her honest take on ProDentim.What a Dental Cleaning Actually Removes, and What It CannotPlaque versus tartar, what the scaler does, why polishing is cosmetic, what the pocket numbers mean, and what happens in the 180 days between visits.Why Your Gums Bleed When You Floss, and When to WorryWhy gums bleed when you floss, why it usually stops in two weeks if you keep going, the signs that mean see a dentist, and where probiotics fit.

Carol Lindqvist worked as a registered dental hygienist in Duluth, Minnesota from 1992 until she retired in 2023. She writes the things she used to say chairside, when the patient could not answer back.