“I don’t want that sticky stuff again.”
Most of us have heard some version of this from a patient. They may remember the taste, the rough feeling on their teeth, or the moment they looked in the mirror and wondered what had been left behind.
Sometimes the refusal comes before we have even finished explaining why we are recommending fluoride. That moment creates an important clinical question: What good is a fluoride product that is effective if the patient refuses to let us apply it?
First-generation, traditional fluoride varnishes are designed to remain on the tooth, and that contact time is intentional. The varnish holds fluoride against enamel and exposed dentin while the fluoride becomes available at the tooth surface.
Kelly Tanner, PhD, RDH.
Research and clinical recommendations support the role of fluoride varnish in caries prevention, particularly for patients at increased risk. Still, effectiveness is not only about what happens after a product is applied. It also includes whether the patient accepts the treatment in the first place.
For some patients, the decision may not be between an effective traditional varnish and another product that works in the same way. The real choice may be between a different fluoride delivery system and no professional fluoride application at all. That is where the conversation becomes more complicated.
The product should not be the starting point
Before deciding which fluoride product to recommend, we first need to understand why we are recommending it. Caries management by risk assessment, better known as CAMBRA, gives us a framework for doing that.
CAMBRA asks us to evaluate disease indicators, risk factors, and protective factors instead of giving every patient the same prevention plan. A patient with active caries, recent restorations, orthodontic appliances, frequent carbohydrate exposure, xerostomia, or exposed root surfaces may benefit from additional fluoride protection. Another patient may have adequate salivary flow, consistent fluoride exposure, no active disease, and very different preventive needs.
Risk also changes over time.
I remember after I had my first child, I was so consumed with taking care of a newborn that I forgot to brush my teeth for two days. Two days. And, yes, I was a dental hygienist.
That is how quickly life can disrupt even the habits we think are automatic. It was a short season, but it is a good reminder that our patients’ routines can change overnight.
A new baby, a new medication, an illness, caregiving responsibilities, or a change in mobility can all influence caries risk. What worked for a patient a year ago may not be enough for them now. A child who once needed frequent fluoride applications may become more stable as habits and protective factors improve. An adult who has never had significant caries may become high risk after beginning medications that reduce salivary flow, while an older adult who has maintained good oral health for decades may suddenly face root exposure, limited dexterity, dietary changes, and dry mouth.
That is why the fluoride conversation should not begin with, “Would you like fluoride today?” It should begin with, “Here is what I am seeing, and here is why I believe you would benefit from additional protection.”
When the recommendation is connected to the patient’s individual risk, fluoride becomes part of a health conversation instead of feeling like a routine add-on. It also gives the patient a reason to consider the recommendation rather than simply answering yes or no to a product.
When the patient still says no
Once we have identified the need, we still have to consider whether the patient is willing to receive the treatment. Traditional resin- or rosin-based varnishes have been extensively tested and used clinically.
The sticky rosin supports mechanical retention and is an important part of the fluoride delivery system. Still, that lingering texture does not always win the popular vote with clinicians or patients, particularly when taste, appearance, and comfort influence whether the treatment is accepted.
Newer options have created more choices. Water-based fluoride treatments use water as the delivery medium, allowing fluoride to become available quickly without leaving a persistent coating on the teeth.
Dimethicone-based fluoride varnishes take a different approach by using a smooth, silicone-based vehicle, commonly used in food and pharmaceutical applications, to form a thin layer over the tooth surface. This coating allows the formulation to remain in contact with the tooth and continue releasing fluoride over time without relying on sticky rosin for mechanical retention. Although both formulations are rosin-free, they should not be placed in the same category.
One emphasizes rapid fluoride availability with minimal residue, while the other provides a coating-based delivery system designed for continued fluoride delivery and a smoother patient experience. These products do not all behave in the same way.
Fluoride release, enamel fluoride uptake, remineralization, dentinal tubule occlusion, and clinical caries reduction are related outcomes, but they are not interchangeable. Peer-reviewed studies help us understand how different delivery systems perform, but they do not necessarily establish that one formulation is clinically superior for every patient.
At the same time, we should not ignore patient acceptance. A product can have strong evidence behind it and still provide no benefit to the patient who refuses it. For that patient, an alternative fluoride application may provide more preventive value than receiving no professional fluoride at all. That does not mean every formulation is equal. Better than none and equivalent effectiveness are two different conversations.
The conversation may change the answer
Before changing products, we should also examine how we explain fluoride varnish. Many patients are told only that fluoride is being applied. They are not prepared for how it may feel, why the coating remains on the teeth, or how long the sensation may last. When that experience surprises them, it may shape how they respond the next time fluoride is recommended.
Use the following script when advising a patient that you recommend a fluoride varnish and the side effects they can expect to experience:
“Your caries risk assessment shows that your dry mouth and exposed root surfaces are increasing your risk for decay. This fluoride coating is designed to remain on your teeth for several hours. It may feel sticky at first, but that contact time is intentional. I will apply a thin layer, and the feeling will gradually go away.”
Now the patient understands that the sensation has a purpose. The recommendation is also connected to something specific about their health rather than presented as a routine procedure.
For another patient, that explanation may not be enough. They may still decline because of taste, texture, sensory sensitivity, cost, or a previous unpleasant experience. That is when the clinician can discuss other evidence-supported options and incorporate them into the larger CAMBRA plan.
The goal is not simply to complete the fluoride application. The goal is to reduce the patient’s caries risk. That may require a different formulation, stronger home fluoride exposure, changes in diet, salivary support, or a shorter reassessment interval. The product matters, but the larger plan matters more.
Choosing what the patient will actually accept
Patient preference should not replace clinical evidence, but it is part of clinical decision-making. The most appropriate fluoride product is one that has evidence supporting its intended use, addresses the patient’s current risk, and is acceptable enough for the patient to receive consistently. For some patients, that will be a traditional adhesive varnish. For others, it may be a water-based or dimethicone-based option combined with prescription fluoride, dietary changes, salivary support, and closer reassessment.
CAMBRA reminds us that there is no single fluoride plan for every patient at every stage of life. The question is not only, “Which product has been clinically tested and shown to be effective?” The question is also whether the patient will accept that option and whether it fits within the larger strategy for reducing disease risk.
In the end, the best plan is the one supported by evidence, matched to the patient, and realistic enough to be followed.
Editor's note: References are available upon request.
Kelly Tanner, PhD, RDH, is a contributing author to DrBicuspid, where she shares insights and strategies to empower dental hygienists in their careers. As a leader in clinical training, professional development, and team dynamics, Tanner provides resources to help hygienists elevate their practice and personal growth. For further support, join her free Facebook group, Next Level Dental Hygiene Career and Personal Development, and explore group training and on-demand courses at www.nextleveldentalhygiene.com.
The comments and observations expressed herein do not necessarily reflect the opinions of DrBicuspid.com, nor should they be construed as an endorsement or admonishment of any particular idea, vendor, or organization. Some content may be AI-generated.
