When do you actually need prescription-strength fluoride toothpaste?

Ever wonder why you keep getting cavities when you're brushing and flossing like you're supposed to? It's a frustrating pattern, and it doesn't necessarily mean you're doing something wrong.  

Regular fluoride toothpaste gives most people the protection they need, but if you keep getting cavities, have severe dry mouth or face another factor that raises your cavity risk, your dental provider may recommend prescription-strength fluoride toothpaste. It contains more fluoride than toothpaste sold in stores and should be used only as directed. 

What you will learn in this article: 

• Most people do not need prescription-strength fluoride toothpaste. 

• Frequent cavities, severe dry mouth and other factors may mean you need added protection. 

• Prescription-strength toothpaste contains more fluoride than regular toothpaste. 

• Your dental provider can decide whether a stronger fluoride product is right for you. 

If you are concerned about cavities or unsure which toothpaste to use, schedule an appointment with an Aspen Dental provider. Your care team can review your cavity risk and recommend the right option. 

What makes toothpaste “prescription strength”? 

Regular fluoride toothpaste sold in stores usually contains 1,000 to 1,500 parts per million, or ppm, of fluoride. The American Dental Association notes that prescription-strength fluoride toothpaste contains 5,000 ppm. Ppm is simply a way to show how much fluoride is in the paste.¹ 

A home-use product with this much fluoride requires a prescription. It is meant for people whose cavity risk may call for added protection. 

Who needs prescription-strength fluoride toothpaste? 

Your dental provider looks at your overall cavity risk, not just one detail. Recent decay, severe dry mouth, frequent sugary snacks or drinks, certain cancer treatments and trouble caring for your teeth can all raise that risk.² 

You have had several cavities recently 

For people older than 6, having three or more areas of decay or fillings within the past three years is one sign of high cavity risk.² Your dental provider will also consider how quickly new decay is forming and whether your current dental care is controlling it. 

You have severe dry mouth 

Saliva helps protect your teeth. If your mouth stays very dry, your dental provider may recommend extra fluoride. Tell your dental provider about your medicines, health conditions and treatments so they can consider what may be causing the dryness. 

You may not get enough fluoride 

Your dental provider may ask what toothpaste and mouth rinse you use and whether your main drinking water contains fluoride. Low fluoride exposure does not always mean you need prescription toothpaste, but it can be one part of your overall risk.¹ 

Your child has a high cavity risk 

Age matters. Prescription fluoride gel or toothpaste for home use may be considered for children age 6 and older who have a higher cavity risk. For children younger than 6, a dental provider may use fluoride varnish instead.¹ A parent or caregiver should help young children use the right amount of toothpaste and spit it out. 

Your diet or oral health raises your risk 

Frequent sugary snacks or drinks can raise your cavity risk. So can having trouble brushing and flossing well. Receding gums may also expose tooth roots, making them easier to damage. Your dental provider can decide whether stronger toothpaste or another fluoride treatment is the better choice. 

Is prescription-strength fluoride safe? 

For the right patient, prescription-strength fluoride toothpaste can be used safely when the directions are followed. Because it contains more fluoride, use only the amount your dental provider recommends.¹ 

Dental fluorosis is mainly a concern while a child’s permanent teeth are still forming, usually until about age 8. Mild fluorosis may look like faint white marks. More serious cases can cause pits or changes in tooth color. Once the enamel has finished forming, new fluorosis cannot develop.³ 

Your dental provider will consider your age, cavity risk and other sources of fluoride before recommending a prescription product. 

What happens at the dental provider before a prescription? 

Your dental provider will review your cavity history, dry mouth, diet, current fluoride products and main source of drinking water. They will also examine your teeth and gums for decay, exposed roots and other areas that may need added protection. 

After looking at your overall risk, your dental provider may recommend regular toothpaste, prescription-strength toothpaste or another fluoride treatment. If you receive a prescription, ask how much to use, how often to use it and how long you may need it. 

If you are concerned about cavities or dry mouth, get in touch with your local dental provider to get it checked out.  

When do you actually need prescription-strength fluoride toothpaste? FAQs 

Here are quick answers to common questions about using a stronger fluoride toothpaste. 

Can I buy 5,000 ppm fluoride toothpaste over the counter? 

No. Toothpaste with 5,000 ppm fluoride requires a prescription from a dental provider or doctor. 

How long will I need to use it? 

It depends on your cavity risk. Your dental provider may recommend it for a set period or for as long as you continue to need added protection. 

What should I do if my child swallows some? 

Have your child spit out any toothpaste still in their mouth. If you think they swallowed more than the amount normally used for brushing, call Poison Help at 1-800-222-1222 for advice.⁴ Keep the toothpaste tube nearby so you can explain which product was swallowed. 

What if I already use a fluoride mouth rinse? 

Tell your dental provider about every fluoride product you use. They can determine whether you need both products and explain how to use them safely. 

Sources 

¹ American Dental Association, Library and Archives: “Fluoride: Topical and Systemic Supplements.” https://www.ada.org/resources/ada-library/oral-health-topics/fluoride-topical-and-systemic-supplements 

² American Dental Association, Library and Archives: “Caries Risk Assessment and Management.” https://www.ada.org/resources/ada-library/oral-health-topics/caries-risk-assessment-and-management 

³ National Institute of Dental and Craniofacial Research, Ask the Expert: “Why is fluoride good for dental health?” https://www.nidcr.nih.gov/health-info/fluoride/ask-expert-why-fluoride-good-dental-health 

⁴ U.S. Department of Health and Human Services, Health Resources and Services Administration, Poison Help: “Household and Chemical Products.” https://poisonhelp.hrsa.gov/faq/household-chemical-products