By: Lee Ann Brady, DMD
This topic originally appeared on PankeyGram.org. Dr. Brady granted permission for igniteDDS to share with our readers.
Fluoride varnish is one of the most effective ways to prevent caries, yet many dental professionals and patients underestimate its power. If youโre still using fluoride gel or foam, itโs time for an upgrade. Those methods are like listening to eight-track tapes in a world of streaming music.
Fluoride varnish is the gold standard for in-office fluoride application, offering superior efficacy and longer-lasting benefits.
Why Fluoride Varnish is More Effective
One of the biggest advantages of fluoride varnish over traditional foam or gel is its ability to maintain a high fluoride ion concentration for 4โ6 hours after application, compared to less than 30 minutes with foam or gel.
The longer fluoride remains in contact with the teeth, the more effective it is for enamel remineralization and protection against decay.
Types of Fluoride Varnish
There are two main types of fluoride varnish:
- Hydrophilic varnish (creeping varnish):
Applied only to the facial surfaces, it naturally spreads into occlusal grooves and interproximal spaces, ensuring full coverage with minimal application. - Hydrophobic varnish (non-creeping varnish):
Requires drying the teeth before application and must be manually applied to all surfaces.
Patient-Friendly Advantage:
Hydrophilic fluoride varnishes tend to be more comfortable for patients, as they donโt leave the teeth feeling coated or sticky. This is particularly helpful for patients who resist varnish due to the sensation on their teeth after a hygiene visit.
Overcoming Patient Resistance to Fluoride Varnish
Many patients hesitate to get fluoride varnish because it changes the sensation of freshly cleaned teeth. A helpful analogy to share with patients is:
โImagine going to the hairdresser, getting a perfect blowout, and then right before you leave, your stylist tousles your hair into a mess. That would be annoyingโunless she told you that messing it up would prevent hair loss. Youโd let her do it every time.โ
Fluoride varnish isnโt about how your teeth feel in the momentโitโs about long-term protection against dental caries.
Increasing Fluoride Varnish Acceptance in Adult Patients
While pediatric fluoride varnish applications are standard, many practices struggle with adult acceptance. In my practice:
- Over 80% of adult patients receive fluoride varnish at hygiene visits.
- This uptake took 6 to 18 months of consistent patient education.
- Many adults initially decline, but after returning with a new cavity, they often request varnish themselves.
Key Tip: Consistently recommend varnish and reinforce its value to gradually increase patient acceptance.
Chlorhexidine Varnish: Another Powerful Tool
For patients already using prescription-strength fluoride toothpaste (like Clinproโข 5000 or MI Pasteยฎ), I use chlorhexidine varnish instead of fluoride varnish.
Benefits of Chlorhexidine Varnish:
- Suppresses Streptococcus mutans levels for up to four months
- No staining (unlike chlorhexidine rinses)
- No bad taste
- Same easy application as fluoride varnish
By alternating between fluoride varnish and chlorhexidine varnish based on patient needs, we address caries risk from multiple angles.
Fluoride Varnish vs. Silver Diamine Fluoride (SDF)
Many clinicians ask if they should apply both fluoride varnish and SDF at the same visit.
The answer: No.
- SDF provides high levels of free fluoride ions in saliva.
- Layering fluoride varnish on top does not add additional benefit.
How to Make Fluoride Varnish Standard in Your Practice
- Educate patients on long-term benefits rather than short-term feelings.
- Integrate fluoride varnish into hygiene visits so it becomes routine.
- Offer chlorhexidine varnish for high-risk patients who already use fluoride at home.
- Be patientโconsistent conversations lead to long-term acceptance.
Fluoride varnish is one of the simplest, most effective ways to protect enamel and prevent caries. Making it a routine part of hygiene care helps patients maintain healthier smiles for years to come.
Continuing Education Recommendation
To gain a fresh perspective on the dental hygiene-restorative partnership, consider The Pankey Hygienist courseโa 3-day hands-on advanced continuing education program for dental professionals.
