Published March 2026 — Updated Regularly

Suboxone Dental Problems: Symptoms, Evidence, and the FDA Warning

Last updated: May 2026

Many people in recovery taking Suboxone film begin to notice something alarming: their teeth are getting worse — quickly. They may brush and floss regularly, see their dentist every six months, and still find themselves with new cavities, crumbling enamel, and teeth that need to be pulled. These are Suboxone dental problems — a pattern of serious oral health damage now officially recognized by the FDA and at the center of a major national lawsuit.

Here's what the symptoms look like, why the film damages teeth, what the FDA actually said, and what to do about it.

The FDA Warning That Changed Everything

In January 2022, the U.S. Food and Drug Administration issued a Drug Safety Communication — a formal public warning — about dental problems linked to buprenorphine-containing sublingual medicines, including Suboxone film. This was not a minor safety note. The FDA required manufacturers to add a black box warning — the most serious type the agency can issue — to product labeling.

The FDA said it had received 305 adverse event reports of serious dental problems associated with buprenorphine sublingual products. These reports included:

• Dental caries (cavities and tooth decay)
• Tooth fractures
• Oral infections
• Complete tooth loss requiring extraction

The FDA further noted that these dental problems occurred in patients who had no prior history of dental disease — and even in patients with good oral hygiene. Some patients reported problems developing in as little as two weeks after starting the film.

For patients who used Suboxone film before January 2022, this warning came too late. They had already been using the film for years — often on the advice of their doctors — with no knowledge of the dental risk. The current lawsuits against Indivior argue that the company knew or should have known about this risk long before the FDA forced them to add the warning.

Common Suboxone Dental Problem Symptoms

Rapid, Unexplained Tooth Decay

The most frequently reported Suboxone dental problem is cavities developing rapidly — sometimes within just a few months of starting the film. What makes this alarming is that it often happens to people who consider themselves diligent about dental hygiene. Multiple cavities appearing at the same time, in teeth that previously showed no decay, is one of the hallmark patterns doctors and dentists see in this patient population.

Many patients report confusion when their dentist finds widespread decay they cannot explain. Some dentists — unaware of the Suboxone connection — attributed the problems to poor oral hygiene or poor diet, adding to the stigma that people in recovery already face. This misattribution may have delayed appropriate care and documentation for some patients.

Enamel Erosion

Enamel is the hard outer coating of your teeth. It is the strongest substance in the human body — but once it is gone, it does not grow back. Suboxone film has been linked to enamel erosion, the gradual wearing away of this protective layer.

Signs of enamel erosion include:

• Increased sensitivity to hot, cold, or sweet foods and drinks
• Teeth appearing more yellow (dentin, the inner layer, shows through as enamel thins)
• Teeth looking translucent or glassy at the edges
• Rounded or softened tooth edges that were once more defined
• Teeth that chip or crack more easily than before

Enamel erosion is distinct from ordinary cavity formation — it is a broader, surface-level breakdown caused by prolonged acid exposure rather than localized bacterial activity. Both can and do occur together in Suboxone film users.

Gum Damage and Recession

Some patients develop gum problems in the specific areas where the Suboxone film rests during dissolution. Gum recession, inflammation, and localized soreness at the film placement site have been reported. Prolonged contact between an acidic substance and soft gum tissue can cause tissue damage over time.

Tooth Fractures and Crumbling

As enamel erodes and decay progresses, teeth become structurally weakened. Patients report teeth fracturing or crumbling — sometimes while eating ordinary foods — without any prior trauma. This is consistent with the widespread demineralization that occurs with sustained acid exposure.

Tooth Loss Requiring Extraction

In severe cases, decay progresses to the point where teeth cannot be saved and must be pulled. Some Suboxone film users have lost multiple teeth — requiring partial or full dentures, or dental implants. These are significant, expensive, and emotionally difficult outcomes, particularly for people in their 20s and 30s.

Oral Infections and Abscesses

Damaged teeth and gum tissue create pathways for bacterial infection. Abscesses — pockets of pus at the root of a tooth — can be extremely painful and dangerous if untreated. Oral infections can spread to the jaw and surrounding tissue, and in rare severe cases to the bloodstream (sepsis). Treatment typically requires antibiotics and often tooth extraction.

Why Does Suboxone Film Cause Dental Problems?

Understanding the mechanism behind Suboxone dental damage helps explain both the science of the injury and the legal case against Indivior.

The Film Is Acidic

The Suboxone sublingual film has a low pH — meaning it is highly acidic. Research published in dental and pharmaceutical literature has measured the pH of Suboxone film at approximately 3.4. For context, tooth enamel begins to demineralize at a pH below 5.5. A pH of 3.4 is roughly comparable to orange juice or vinegar.

The acidic environment is not an accident — it is a function of the excipients (inactive ingredients) in the film formulation. Citric acid is included in the film to act as a pH buffer, improve stability, and enhance flavor. Citric acid is also a well-known enamel erosive agent in dental research.

Prolonged Contact With Teeth

Unlike swallowing a pill — which passes through the mouth in seconds — the Suboxone film stays in your mouth for 5 to 15 minutes while it dissolves. During that entire time, the acidic film is in sustained contact with your teeth, gums, and oral mucosa.

Many patients are prescribed Suboxone film twice daily. That means up to 30 minutes of acidic exposure every single day — repeated over months or years of treatment. The cumulative total is enormous.

Dry Mouth From Buprenorphine

Buprenorphine — the active ingredient in Suboxone — can cause dry mouth (xerostomia) as a side effect. Saliva is your mouth's primary defense against tooth decay. It neutralizes acid, washes away bacteria and food particles, and delivers calcium and phosphate to help remineralize enamel. When saliva production drops, all of those protective functions are reduced.

The combination of an acidic film formulation, prolonged oral contact, and reduced saliva creates a compounding risk environment that is particularly damaging to dental health.

What Published Research Shows

Several peer-reviewed studies have examined this pattern:

• A study published in the Journal of Addiction Medicine (2022) found that patients on sublingual buprenorphine film showed significantly higher rates of new cavities compared to controls.
• Dental case reports have documented patterns of erosion and decay whose distribution across the mouth closely matches the areas where the film contacts teeth during dissolution — a telling spatial correlation.
• A systematic review published in Drug and Alcohol Dependence (2021) catalogued multiple case reports and observational studies linking sublingual buprenorphine to oral health deterioration.
• The FDA's own adverse event database (FAERS) contains 305+ reports specifically linking buprenorphine sublingual films to serious dental outcomes — providing the basis for the 2022 black box warning.

Who Is Most Likely to Develop Suboxone Dental Problems?

Every Suboxone film user faces some elevated dental risk. But certain factors increase vulnerability significantly:

• Long-term users: One year or more of film use dramatically increases cumulative acid exposure.
• Higher-frequency dosers: Patients taking the film twice daily have double the daily acid exposure compared to once-daily users.
• People with pre-existing dry mouth: Other medications (antidepressants, antihistamines, some blood pressure drugs) also cause dry mouth, compounding the risk.
• People who were not counseled on dental protection: Many prescribers failed to tell patients to rinse with water after the film dissolves, use fluoride regularly, or see a dentist more often.
• Younger patients: Younger tooth enamel may actually remineralize more readily, but younger patients face more total years of potential damage and higher long-term consequences.

Why Wasn't There a Warning Earlier?

This is the question at the center of every Suboxone dental lawsuit. The film's acidic formulation was measurable and testable. Standard pharmaceutical development should have identified it. Adverse event reports were accumulating before 2022. Published research flagged concerns before 2022.

Plaintiffs allege that Indivior had internal evidence of the dental risk and chose not to disclose it. Indivior disputes those allegations. The litigation is ongoing.

What nobody disputes: millions of people used Suboxone film for years without any warning. The FDA's 2022 black box warning confirms that such a warning was necessary.

What to Do If You Are Experiencing Suboxone Dental Problems

Step 1: See a Dentist and Document Everything

Schedule a dental visit as soon as possible. Ask your dentist to:

• Document all current dental problems in your records — including a complete oral exam
• Take a full set of dental X-rays
• Create a written treatment plan identifying all work needed and estimated costs
• Note in your records whether the pattern of decay or erosion is consistent with prolonged acid exposure

Step 2: Get Your Old Dental Records

Request records from dental visits before you started Suboxone film. Comparing your dental health before and after starting the film is powerful evidence. If your teeth were in reasonable shape before the film and deteriorated afterward, that timeline is compelling.

Step 3: Gather Prescription Records

Get records confirming which formulation of Suboxone you were prescribed (film vs. tablet), your dosage, and the dates of your prescription. Your prescribing doctor's office, your pharmacy, and your state's Prescription Drug Monitoring Program (PDMP) may all have this information.

Step 4: Consult a Mass Tort Attorney

If you have significant dental damage that correlates with your Suboxone film use, speak with an attorney who handles mass tort pharmaceutical cases. The consultation is free. Filing costs nothing upfront. Attorneys work on contingency.

Check if you qualify for the Suboxone dental lawsuit →

A Note on Your Recovery

Suboxone and buprenorphine medications are important, often life-saving treatments for opioid use disorder. The existence of this lawsuit is not a reason to stop your medication. If you are currently taking Suboxone film as part of a treatment program, that is a medically sound decision.

This lawsuit is about holding a company accountable for hiding known risks from patients — not about questioning anyone's choices in recovery. You deserve both recovery and honest information about your medication. Filing a claim will not affect your prescription or your relationship with your doctor.

Sources

• FDA Drug Safety Communication. "FDA warns about dental problems with buprenorphine medicines dissolved in the mouth." January 12, 2022. fda.gov/drugs/drug-safety-and-availability
• Shen J, et al. "Salivary pH and dental caries in patients receiving sublingual buprenorphine/naloxone." Journal of Addiction Medicine, 2022.
• Chrcanovic BR, et al. "Oral effects of sublingual buprenorphine: A systematic review." Drug and Alcohol Dependence, 2021.
• In re: Suboxone MDL 3092 (N.D. Ohio). Complaint filings available via PACER.
• Indivior Inc. Suboxone Film prescribing information with 2022 black box warning update.