The MiBöca Povidone-Iodine Protocol—Quick Summary

For selected patients at high risk for tooth decay, MiBöca Dentistry may recommend a small, carefully measured topical application of 10% povidone-iodine as one part of a personalized caries-management plan.

Our current protocol is:

1. A MiBöca dentist evaluates the patient’s cavity risk, medical history, current disease, medications, saliva, diet, home care, and restorability of affected teeth.
2. Exactly eight drops of 10% povidone-iodine are dispensed into a dappen dish.
3. The teeth are dried with gauze.
4. A cotton-tip applicator is saturated from the measured dose.
5. A thin layer is painted onto the prescribed tooth surfaces, beginning with the highest-risk areas and then treating the remaining indicated dentition.
6. The mouth remains open for approximately 30 seconds after application.
7. The patient then closes the mouth and may swallow the small residual amount once, but only when this has been specifically prescribed and demonstrated by the supervising MiBöca dentist. The product is painted onto the teeth; it is not used as a drink or conventional mouth rinse.
8. The dentist determines how often the application should be repeated and whether future applications should occur at home or in our office.

The first application is performed at MiBöca. If home treatment is appropriate, we teach the patient or caregiver the exact technique and dispense a kit containing the prescribed solution, a glass dropper, dappen dish, cotton-tip applicators, and gauze. Patients who would rather have every application completed by our team are welcome to return to the office.

Important medical disclaimer: Using povidone-iodine specifically to prevent, control, or arrest dental caries is an off-label clinical use. Some purpose-made products are labeled as oral antiseptics for topical use on oral tissues, but that does not mean every retail povidone-iodine product is suitable for the mouth or that any product is approved as a cavity cure. This protocol should not be attempted with store-bought iodine or without professional direction. It must be prescribed and supervised by a dentist—ideally the MiBöca team—so we can select an appropriate oral-use formulation, confirm candidacy, teach the exact dose and technique, monitor the teeth and oral tissues, evaluate medical considerations, and change the plan when needed. Povidone-iodine is not appropriate for everyone and is not a substitute for an examination, diagnostic imaging when indicated, restorative care, dietary changes, plaque control, or treatment of the cause of dry mouth. Please read this entire article before deciding whether to ask about the protocol.

Subscribe to the MiBöca Minute for practical education on airway health, ozone therapy, the oral microbiome, and other important topics in biological dentistry. Povidone-iodine can provide valuable antimicrobial support and help slow disease progression while we investigate and address the underlying causes of microbial imbalance. Each MiBöca Minute delivers a useful insight in less than one minute, with an optional link to explore that week’s topic in greater depth. Join us as we continue learning, evaluating emerging research, and sharing the latest developments in whole-health dentistry.

Dr. Jeremy Horst Pioneer Overview: Iodine for Caries Management

This article has been expanded using information presented by pediatric dentist and oral-health researcher Dr. Jeremy Horst Keeper in his pioneering use of povidone-iodine.

Several of his most important points are consistent with MiBöca’s approach:

• Povidone-iodine is painted onto tooth surfaces in a small amount rather than used as a conventional rinse.
• Saliva helps activate the povidone-iodine complex by releasing free iodine.
• A single treatment is unlikely to permanently change a high-risk mouth; repeated application and follow-up matter.
• Published protocols vary, and frequency should reflect disease severity, patient reliability, practicality, and professional judgment.
• Povidone-iodine is an adjunct to comprehensive caries care, not a substitute for diagnosis, necessary restorative treatment, nutrition changes, plaque control, or management of dry mouth.

Dr. Horst also discusses a more intensive schedule that he has explored clinically: He reports experience with 23 young patients, but also states that this protocol should be formally tested. MiBöca therefore does not treat that schedule as a universally proven prescription. Your MiBöca dentist will determine whether an induction phase, a more-frequent preventive schedule, in-office treatment, or home maintenance is appropriate for you.

Looking for an Alternative, Conservative Way to Manage Cavities?

If you or your child seems to develop one cavity after another, it is reasonable to ask a deeper question: Why is the mouth continuing to produce disease?

Ceramic restorative dentistry is often necessary. A tooth with a cavitated lesion, structural weakness, pain, infection, or pulpal involvement may still require a filling, crown, ozone therapy, nerve treatment, or extraction. But repairing damaged teeth without changing the conditions that produced the damage can leave a patient trapped in a cycle of recurrent decay and repeated dental work.

At MiBöca Dentistry, our goal is to preserve as much healthy tooth structure as reasonably possible while addressing the biological drivers of disease. Povidone-iodine may be useful as an adjunctive antimicrobial step for carefully selected high-risk patients. It is not a magic cure, and it does not “heal” a hole in a tooth. Instead, it may help temporarily reduce parts of the cariogenic microbial burden while we work on the larger system: diet, saliva, plaque ecology, breathing patterns, mineral balance, existing restorations, and sustainable home care.

That distinction matters. Conservative dentistry does not mean ignoring disease. It means intervening thoughtfully, using the least invasive effective option that is appropriate for the tooth and the patient.

What Is Dental Caries?

Dental caries—the disease process that produces cavities—is not simply a matter of “bad teeth” or a single bad bacterium. It is a biofilm-mediated, diet-modulated process. Microorganisms living in dental plaque metabolize fermentable carbohydrates and produce acids. When the mouth experiences repeated or prolonged acidic conditions, minerals leave the enamel faster than they can return. Over time, early mineral loss can progress into an irreversible cavity.

This process is dynamic. Teeth move through cycles of demineralization and remineralization every day. Whether disease progresses depends on the balance between risk factors and protective factors.

Common risk factors include:

• Frequent exposure to sugar, sweetened beverages, juice, crackers, gummies, or other fermentable carbohydrates
• Eating or sipping repeatedly throughout the day
• Visible plaque or inadequate plaque removal
• Reduced saliva or xerostomia
• Medications that dry the mouth
• Mouth breathing and sleep-related airway problems
• Existing cavities or a recent history of new decay
• Deep grooves, difficult-to-clean anatomy, orthodontic appliances, or partial dentures
• Physical, cognitive, or developmental barriers to effective home care
• Exposed root surfaces in older adults
• Acidic beverages, gastric reflux, or other sources of erosion
• Restorations with open margins or areas that retain plaque

A filling repairs the damage created by caries. A comprehensive caries-management plan also tries to change the environment that allowed the damage to occur.

What Is Povidone-Iodine?

Povidone-iodine, also called PVP-I, is a broad-spectrum antiseptic made by combining iodine with the carrier molecule povidone. It has been used for decades in medicine and dentistry to reduce microorganisms on skin and mucosal surfaces.

In dentistry, researchers have investigated topical povidone-iodine because it can rapidly reduce or suppress organisms associated with cariogenic biofilms, including mutans streptococci. The rationale is straightforward: if a high-risk mouth carries a heavy acid-producing microbial burden, a controlled antimicrobial intervention may create a temporary opportunity to shift the environment in a healthier direction.

The word temporary is important. Biofilm returns. There are studies in which mutans streptococci remained suppressed in some sampled sites for weeks or months, while organisms on chewing surfaces recovered sooner. This helps explain why repeated application has been explored. It does not prove that every person needs the same schedule or that bacterial suppression automatically prevents a cavity. Povidone-iodine should not be used as a stand-alone solution. Any benefit is more likely to be meaningful when the patient also changes the conditions that select for acid-producing, acid-tolerant organisms.

How Povidone-Iodine May Work in the Mouth

Povidone acts as a carrier or reservoir for iodine. When the solution contacts saliva and becomes diluted, free iodine is released from the complex. According to the research, this active iodine can disrupt microbial membranes and interact with proteins and genetic material. Laboratory work suggests rapid antiseptic activity at the sites where it is applied—on the order of seconds—but a laboratory kill time is not the same thing as a guaranteed clinical result.

The potential anticaries effect may involve more than indiscriminately “sterilizing” the mouth:

• Older laboratory research suggests that mutans streptococci may be affected at lower concentrations and more quickly than certain less-cariogenic oral organisms.
• Povidone-iodine has been reported to interfere with glucosyltransferase, an enzyme used by Streptococcus mutans to convert sugars into sticky glucans that help build dental plaque.
• Clinical studies have reported temporary suppression of mutans streptococci and lactobacilli—organisms associated with a cariogenic environment.
• One microbiome study discussed in the presentation suggested a shift from a caries-active pattern toward a more caries-free pattern after treatment. This finding is encouraging, but oral microbiome measurements are complex, site-specific, and variable over time.

Povidone-iodine is a broad-spectrum antiseptic, so it should not be described as a probiotic or a perfectly selective treatment. The more responsible interpretation is that available oral studies suggest suppression of important disease-associated organisms without clear evidence that a properly supervised topical protocol permanently damages the oral microbiome. The effect on the gut microbiome from this type of dental application has not been adequately established.

Another practical concern is antimicrobial resistance. Certain laboratory studies in which researchers repeatedly exposed bacteria to povidone-iodine but were unable to generate acquired resistance under the conditions tested. A classic study examined serial passage of multiple bacterial strains, and later research tested a much larger collection of laboratory and clinical isolates. This is reassuring, but it should not be simplified into a claim that no organism can ever tolerate or survive povidone-iodine. Read the classic resistance study.

Why MiBöca Uses a Measured, Dentist-Supervised Protocol

More is not automatically better. MiBöca begins with one standardized, carefully measured dose for both children and adults: eight drops of 10% povidone-iodine. This helps keep the application consistent and avoids the uncontrolled use of an unmeasured swab or rinse.

Supervision also allows us to answer questions that an online protocol cannot:

• Is this truly active caries, staining, erosion, abrasion, or a developmental defect?
• Is the lesion early enough to monitor, or does it need restorative treatment now?
• Is the patient’s dry mouth medication-related, airway-related, autoimmune, age-related, or caused by another condition?
• Are there medical reasons to avoid or modify iodine exposure?
• Is the patient or caregiver able to perform the technique accurately?
• Is the protocol actually reducing new disease over time?

At follow-up visits, we can compare clinical findings, photographs, radiographs when indicated, salivary conditions, plaque levels, symptoms, and the appearance or activity of existing lesions. A conservative plan is only responsible when it includes monitoring and clear thresholds for additional treatment.

Who May Benefit From This Approach?

Povidone-iodine may be considered for patients with a high or extreme risk of new cavities, particularly when conventional home care has not been enough.

Children with early or rampant caries

Children can move from early demineralization to extensive disease quickly. Frequent snacks, bedtime feeding, enamel defects, limited cooperation with brushing, and early colonization by cariogenic organisms may all contribute. A brief topical protocol may be easier for some children than a rinse, but it must be selected and administered with careful attention to age, medical history, cooperation, dose, and the ability to follow instructions.

Older adults

Older patients may experience exposed root surfaces, reduced dexterity, complex restorations, partial dentures, dietary changes, and polypharmacy. Many commonly prescribed medications reduce salivary flow. Root-surface caries can progress rapidly because root structure is less mineralized than enamel.

Patients with xerostomia or dry mouth

Saliva dilutes acids, clears food, buffers pH, lubricates tissues, and carries minerals and protective proteins. When salivary quantity or quality declines, cavity risk can rise dramatically. Antimicrobial treatment may be useful, but the plan must also investigate and manage the reason for the dry mouth.

Patients with special healthcare needs

Some patients face physical, sensory, cognitive, or behavioral barriers that make thorough daily plaque removal difficult. A caregiver-assisted protocol may provide another layer of support, provided it is prescribed and monitored by the dental team.

Patients with repeated decay around dental work

New decay at the edges of fillings, crowns, bridges, or other restorations can indicate that the underlying disease environment remains active. Povidone-iodine may be considered as one part of a broader strategy, but defective or leaking restorations still need to be evaluated and treated appropriately.

Who Should Not Use Povidone-Iodine Without Specific Medical Clearance?

Povidone-iodine is not appropriate for every patient. Before prescribing it, the dentist should review the patient’s complete health history, medications, previous reactions, and anticipated frequency of exposure.

Tell us before treatment if the patient:

• Has previously reacted to povidone-iodine or an iodine-containing antiseptic
• Has known thyroid disease, thyroid nodules, or a history of thyroid surgery
• Is taking lithium or medication that affects thyroid function
• Is pregnant, trying to become pregnant, or breastfeeding
• Is preparing for radioactive iodine testing or treatment
• Has significant kidney disease
• Has open, ulcerated, severely inflamed, or injured oral tissues
• Has experienced unexplained swelling, rash, wheezing, or other symptoms after antiseptic exposure
• Is unable to cooperate with the prescribed technique

This list is not exhaustive. Product formulations and labeling vary, and a product intended for skin preparation should never be assumed to be interchangeable with a dentist-dispensed oral protocol. Do not improvise the concentration, amount, frequency, applicator, or route of use.

A note about shellfish and “iodine allergy”

Shellfish allergy is caused by proteins in shellfish—not by elemental iodine—and it does not automatically mean that a person will react to povidone-iodine. Likewise, a previous reaction to iodinated contrast does not by itself identify povidone as the cause. However, a patient who reports any prior reaction involving povidone-iodine, iodine-containing products, contrast media, or antiseptics should still tell the dentist exactly what happened. MiBöca will review the history, avoid treatment when appropriate, and seek medical input when the risk is unclear. We do not dismiss a reported reaction simply because true povidone-iodine hypersensitivity appears uncommon.

Povidone-iodine should also be applied to the prescribed tooth and intact oral surfaces—not packed into a deep surgical wound or sealed beneath tissue.

What Does the Research Say?

The research is encouraging, but it must be interpreted honestly. Studies differ in concentration, formulation, frequency, population, co-treatments, and outcome measures. Several important studies involved children with severe early childhood caries, and some combined povidone-iodine with fluoride. Evidence supporting the exact MiBöca protocol as a stand-alone intervention is not yet definitive.

A randomized clinical trial found fewer new lesions on initially sound primary teeth

A double-blind randomized clinical trial followed 284 children between 49 and 84 months of age. Researchers compared a varnish containing 10% povidone-iodine plus 5% sodium fluoride with a varnish containing sodium fluoride alone. Applications occurred every three months for two years.

Among primary molars that were sound at the beginning of the trial, the povidone-iodine-plus-fluoride group developed fewer new carious surfaces at one year. The adjusted rate ratio was 0.50, meaning the rate observed in that analysis was approximately half that of the fluoride-only comparison group. At two years, the primary-molar result did not reach conventional statistical significance, although analysis of all initially sound primary teeth continued to favor the combination. Teeth already cavitated at baseline did not show a preventive effect. The investigators reported no treatment-related harms in the trial.

This study supports a possible preventive role for povidone-iodine in high-risk children, but it evaluated a combined varnish—not povidone-iodine alone—and therefore cannot prove that every iodine protocol will produce the same outcome. Read the randomized clinical trial.

A systematic review found a possible benefit, but rated the evidence very low quality

A 2020 systematic review and meta-analysis evaluated topical fluoride plus povidone-iodine compared with topical fluoride alone in children ages 1 through 12. Seven studies met the review criteria, and four were included in the meta-analysis. The pooled analysis suggested a statistically significant reduction in caries incidence with the combined treatment, but it did not find a significant difference in post-treatment Streptococcus mutans counts.

Most importantly, the authors characterized the certainty of the evidence as very low and called for stronger clinical trials. That does not mean the intervention has no value. It means families should hear a balanced explanation: the approach is promising, but the existing literature does not justify guarantees. Read the systematic review and meta-analysis.

Prevented Fraction anaylsis

Dr. Horst presents another pooled view of earlier trials using prevented fraction—the proportional reduction in new caries compared with a control group. In his presentation, the combined estimate across the trials is approximately 33% fewer participants developing new cavities. Studies lasting longer than six months in which both groups received fluoride varnish suggested an estimated 28% additional preventive fraction when povidone-iodine was added.

He also displays a much larger estimate—approximately 76%—from smaller studies in younger children without background fluoride. That number should not be quoted without its uncertainty. The studies were small, their confidence intervals were wide, and their populations and methods differed. They suggest that an effect may be possible without fluoride, but they do not establish that povidone-iodine alone is superior to established prevention or that every patient can expect a 76% reduction.

The presentation also shows an apparent relationship between more frequent application and greater preventive effect. Because patients were not randomized to several different application frequencies within one definitive dose-frequency trial, this pattern is hypothesis-generating, not proof of an ideal schedule. A registered clinical trial is continuing to study povidone-iodine for caries prevention, underscoring that important questions remain open. We are excited about and encourage the more studies that explore the benefits Povidone-Iodine by itself.

Earlier studies reported bacterial suppression and fewer recurrent lesions

Earlier pediatric studies helped establish the biological rationale for topical povidone-iodine:

• In children ages 2 to 6 who underwent treatment for severe early childhood caries, a study reported that mutans streptococci and lactobacilli were reduced after antibacterial treatment, with effects measured at one hour, three weeks, and three months. View the Zhan et al. study in PubMed.
• A randomized study by Amin and colleagues examined children with extensive caries and reported reduced recurrent decay during short-term follow-up with bimonthly povidone-iodine applications after comprehensive dental treatment. View the Amin et al. study in PubMed.
• Lopez and colleagues studied high-risk infants and reported a preventive effect from repeated topical antimicrobial therapy. The study was small and should be interpreted as early evidence rather than a final answer. View the Lopez et al. study in PubMed.
• An exploratory study found suppression of mutans streptococci for up to 90 days after a regimen that included povidone-iodine, fluoride foam, and operative treatment. Because several interventions were delivered together, the result cannot be attributed to iodine alone. Read the exploratory study.

Taken together, these studies suggest that povidone-iodine can affect cariogenic microorganisms and may help reduce new or recurrent disease in some high-risk patients. They do not show that iodine can rebuild missing tooth structure, eliminate the need for necessary dental treatment, or compensate for frequent sugar exposure and persistent plaque.

Povidone-Iodine Is an Adjunct—not a Replacement for Comprehensive Care

At MiBöca, the protocol fits inside a larger, individualized plan.

1. Diagnose the disease accurately

We begin with a clinical examination and appropriate diagnostic information. Early enamel demineralization, an active cavitated lesion, a stained groove, and a structurally compromised tooth are not the same problem. Each requires a different response.

2. Identify the drivers

We look at meal and snack frequency, beverage habits, plaque, salivary flow, medications, airway and mouth-breathing patterns, home-care ability, enamel quality, existing dental work, and medical factors.

3. Reduce the destructive pressure

This may include changing the frequency and form of fermentable carbohydrates, improving plaque removal, addressing dry mouth, supporting nasal breathing when appropriate, and using professionally selected antimicrobial or remineralization strategies.

4. Preserve healthy tooth structure

When a lesion requires restorative care, conservative caries removal may allow the dentist to preserve more sound or repairable tooth structure.

5. Reevaluate

The true measure of a caries plan is not whether the patient completed one application. It is whether lesions become less active, new lesions decrease, symptoms remain controlled, and the mouth becomes more stable over time.

What Patients Can Expect at MiBöca

Your first visit is not simply an iodine application. We determine whether the protocol makes sense for your circumstances.

If it is appropriate, the process may include:

• A review of medical conditions, medications, supplements, and previous reactions
• A clinical and radiographic evaluation when indicated
• A personalized caries-risk assessment
• Identification of the teeth and surfaces that need treatment or monitoring
• The first measured application in the office
• A demonstration for the patient, parent, or caregiver
• A written schedule determined by the dentist
• A home kit when home application is appropriate
• Follow-up monitoring to determine whether the plan is working

The application itself is brief. Povidone-iodine has a noticeable brown color and a characteristic taste. Temporary surface staining of soft tissues or contact materials may occur, and irritation or sensitivity is possible. Contact the office if the patient develops persistent burning, swelling, rash, breathing difficulty, or another unexpected reaction. Breathing difficulty, facial swelling, or signs of a severe reaction require urgent medical attention.

The brown color seen immediately after placement is generally temporary rather than the permanent black staining associated with silver nitrate on active carious tooth structure. The taste is usually subtle when a small amount is painted directly onto the teeth. Individual experiences can differ, and surrounding materials should still be protected from spills.

Frequently Asked Questions

Can povidone-iodine reverse a cavity?

It cannot replace tooth structure that has already been physically lost. Very early, noncavitated lesions may sometimes be stabilized through comprehensive management, while cavitated, weakened, painful, or infected teeth may require restorative or surgical care. The dentist must determine the stage and activity of each lesion.

Is this the same as putting Betadine from the pharmacy on my teeth?

No. Do not substitute a retail skin-preparation product or copy this protocol independently. Concentrations, inactive ingredients, labeling, applicators, dosing, and suitability can vary. MiBöca’s protocol uses a specifically selected product, a measured amount, individualized instructions, and professional monitoring.

Is povidone-iodine FDA-approved to prevent cavities?

Some purpose-made dental formulations are marketed and labeled as topical oral antiseptics. However, the specific claim that povidone-iodine prevents, treats, or arrests dental caries is not the same as the general oral-antiseptic indication. MiBöca’s caries-management use is therefore presented as off-label and based on professional judgment and available evidence. Off-label use does not mean the treatment is proven for every patient or free from risk.

Is it safe for children?

Research has included young children, and MiBöca uses a carefully measured pediatric-oriented dose. Safety still depends on the individual child, product, frequency, health history, supervision, and correct technique. A dentist must approve the protocol for each child.

Why use the same eight-drop dose for adults and children?

Our current objective is to use the smallest standardized dose that adequately coats the prescribed surfaces. We begin with the child-conscious dose rather than automatically increasing exposure for adults. MiBöca may develop a separate adult protocol as additional clinical and scientific information becomes available.

How often is it applied?

There is no universal online schedule that is appropriate for everyone. Published clinical trials have commonly repeated applications four to six times per year, although protocols vary. MiBöca determines frequency according to the patient’s risk, response, medical history, ability to apply it correctly, and overall treatment plan.

Does the mouth become resistant to povidone-iodine?

Laboratory studies have not demonstrated the type of acquired resistance commonly associated with antibiotics, even after repeated attempts to induce it. That is reassuring, but povidone-iodine should still be used purposefully rather than casually. It does not eliminate every organism forever, and recolonization is expected.

Will povidone-iodine permanently stain the teeth?

The solution is brown when applied, but the visible color generally fades quickly. Unlike silver nitrate, povidone-iodine is not expected to permanently blacken active carious tooth structure. Spills can stain fabrics and some surrounding materials, so careful application still matters.

Can povidone-iodine be used immediately with hydrogen peroxide?

Do not combine or sequence oral antiseptics on your own. If another product is part of your plan, ask the MiBöca team about timing and compatibility.

Can I do every treatment at the office?

Yes. Patients who are not comfortable performing the protocol at home—or whose clinical situation makes home use less appropriate—may schedule applications with a MiBöca dentist or hygienist.

Does this replace fillings?

No. Povidone-iodine may help manage the disease environment, but it does not restore a tooth that has lost structure. MiBöca recommends restorative treatment when the condition of the tooth requires it.

Does it replace brushing, flossing, or dietary changes?

No. The intervention is most rational when combined with effective daily plaque control, fewer frequent carbohydrate exposures, attention to saliva and airway factors, and ongoing professional monitoring.

Will dental insurance cover it?

Coverage varies by plan and clinical circumstance. MiBöca can document and submit the appropriate procedure when indicated, but insurance reimbursement is never guaranteed.

A More Thoughtful Way to Manage High Cavity Risk

Patients deserve more than a cycle of finding cavities, repairing them, and waiting for the next ones to appear. They also deserve honesty: no single product can overcome every biological, behavioral, structural, and medical factor involved in dental caries.

Dentist-supervised povidone-iodine gives MiBöca another conservative tool for selected high-risk patients—especially children with aggressive disease, older adults, people with xerostomia, and patients who continue to develop decay despite their efforts. Its purpose is to reduce microbial pressure while we identify causes, preserve tooth structure, complete necessary care, and monitor whether the mouth is becoming healthier.

If you are searching for an alternative or conservative approach to cavity management in Omaha, we invite you to schedule a comprehensive evaluation with MiBöca Dentistry. We will help you understand what is happening, what can reasonably be preserved, which treatment is necessary, and whether our povidone-iodine protocol belongs in your personalized plan.

Schedule an evaluation with MiBöca Dentistry before beginning this protocol. Bring a current medication and supplement list, and tell us about thyroid conditions, pregnancy or breastfeeding, kidney disease, planned radioactive iodine procedures, and any previous reaction to povidone-iodine or other antiseptics.

Research and Professional Resources

1. Milgrom P, Tut O, Rothen M, et al. Addition of Povidone-Iodine to Fluoride Varnish for Dental Caries: A Randomized Clinical Trial. JDR Clinical & Translational Research. 2021;6(2):195-204. Full text
2. Gupta A, Nishant, Sharda S, et al. Comparing the Effectiveness of Topical Fluoride and Povidone Iodine with Topical Fluoride Alone for the Prevention of Dental Caries among Children: A Systematic Review and Meta-analysis. International Journal of Clinical Pediatric Dentistry. 2020;13(5):559-565. PubMed record
3. Zhan L, Featherstone JDB, Gansky SA, et al. Antibacterial treatment needed for severe early childhood caries. Journal of Public Health Dentistry. 2006;66(3):174-179. PubMed search
4. Amin MS, Harrison RL, Benton TS, et al. Effect of povidone-iodine on Streptococcus mutans in children with extensive dental caries. Pediatric Dentistry. 2004;26(1):5-10. PubMed search
5. Lopez L, Berkowitz R, Spiekerman C, Weinstein P. Topical antimicrobial therapy in the prevention of early childhood caries: a follow-up report. Pediatric Dentistry. 2002;24(3):204-206. PubMed search
6. Berkowitz RJ, Koo H, McDermott MP, et al. Adjunctive chemotherapeutic suppression of mutans streptococci in the setting of severe early childhood caries: an exploratory study. Journal of Public Health Dentistry. 2009;69(3):163-167. Full text
7. American Dental Association. New clinical practice guideline on restorative treatments for caries lesions. ADA overview
8. Horst Keeper J. Iodine for Caries Management. Continuing-education presentation. Watch the presentation
9. Houang ET, Gilmore OJA, Reid C, Shaw EJ. Absence of bacterial resistance to povidone iodine. Journal of Clinical Pathology. 1976;29(8):752-755. Full text
10. ClinicalTrials.gov. Povidone Iodine for Caries Prevention. NCT07741409. Study record

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Medical and Editorial Disclaimer

This page is educational and does not establish a dentist-patient relationship or provide a diagnosis. Povidone-iodine use for caries management is off-label. Evidence is evolving, and results cannot be guaranteed. The studies discussed do not all evaluate the same formulation, dose, frequency, population, or accompanying treatments as the MiBöca protocol; several evaluated povidone-iodine together with fluoride. Never drink, rinse with, intentionally ingest, or apply povidone-iodine based solely on online instructions. Under MiBöca’s measured protocol, a dentist may determine that swallowing the small residual amount after topical application is appropriate; that instruction must not be generalized to other products, quantities, patients, or schedules. Treatment must be prescribed, demonstrated, and monitored by a qualified dentist after reviewing the patient’s dental and medical history. Seek urgent medical care for difficulty breathing, facial or throat swelling, or signs of a severe allergic reaction.

Last reviewed: September 2026