DDJ Patient Article · As of March 2026 · Explained Simply
When is remineralization sufficient for non-cavitated caries, when is infiltration useful, and when does the indication for sealing begin?
Explained in an understandable way based on current scientific studies. This article helps you make informed decisions together with your dentist.
This topic concerns a treatment or measure that your dentist can perform or recommend.
Quick and Clear
The most important findings at a glance:
- The results are mixed — there is both positive and critical evidence.
- The scientific basis is solid, but not all questions have been definitively answered.
- The decision must be specific to the lesion.
- The least invasive treatment is sometimes not a treatment, but a well-reasoned observation.
Why is this topic important for you?
You may have heard that there are differing opinions on this topic. This is because science is often more complex than a simple yes or no answer suggests. In this article, we explain what current research actually shows—without technical jargon and without omitting important details.
Not every caries lesion needs to be drilled. The question is which minimally invasive procedure offers the best balance of protection and intervention for a given finding.
Why is this important for you? Because as a patient, you can make better decisions when you understand the background. This article does not replace a discussion with your dentist, but it gives you the knowledge to ask the right questions.
In research, the most important questions revolve around the following areas: remineralization vs. infiltration, sealing for progressive risk, and monitoring as an alternative to intervention. In the following sections, we explain what the studies say about each of these areas and what that means for your daily life.
What is better: Remineralization or Infiltration?
One of the most common questions patients ask about this topic concerns remineralization vs. infiltration. The answer is not as simple as one might hope—but research is now providing clear indications.
Tedesco et al. (2022) conducted a network meta-analysis of several studies, including eleven, comparing various non-restorative treatment options for initial caries lesions in primary teeth. For proximal lesions, resin infiltration showed the highest probability of preventing lesion progression, followed by sealing and fluoride varnish. Only two studies were available for occlusal surfaces, which compared ozone gas, fluoride varnish, resin infiltration, and sealants.
Tasleem et al. (2025) analyzed randomized controlled trials in their systematic review and meta-analysis, comparing microinvasive techniques (infiltration, sealing, glass ionomers) with non-invasive or invasive procedures for non-cavitated proximal lesions. The results showed that resin infiltration had a significantly lower radiographic progression rate compared to fluoride treatment alone (Odds Ratio favoring infiltration).
For buccal and lingual surfaces, Tedesco et al. (2022) identified three studies comparing brushing, CPP-ACP paste, fluoride varnish, and resin infiltration. Here too, resin infiltration showed the best progression inhibition. Fluoride-based remineralization performed consistently positively as a baseline measure on all surface types but did not reach the effect size of infiltration in direct comparisons.
The third source (Cochrane) provides the most comprehensive review of sealant placement in at-risk children. The data show that resin-based sealants can reduce the progression of caries on occlusal surfaces by 60–70%, with sealant retention being the crucial success factor. For proximal surfaces, the scientific evidence for sealants is weaker and the technical application is more complex.
Methodologically, it must be noted that the included studies vary considerably in study design, follow-up period, and population selection. This heterogeneity limits the comparability of the results and explains why pooled effect estimates must be interpreted with caution. Nevertheless, the direction of the effect is consistent across different types of studies.
For transferability to the German-speaking care context, it is also relevant that a significant portion of the scientific evidence comes from Anglo-American or Scandinavian care systems. Differences in reimbursement structure, treatment culture, and patient access can influence effect sizes without invalidating the core message.
The choice between remineralization, infiltration, and sealing depends on the lesion type, surface location, and individual caries risk. For initial proximal lesions with proven progression, resin infiltration is the most evidence-based strong option. For occlusal surfaces in at-risk children, sealant placement remains the standard.
Remineralization (fluoride varnish, CPP-ACP) is indicated as a baseline measure for all initial lesions and should be continued regardless of any potential infiltration or sealing. The procedures are complementary, not alternative.
In daily practice, this means that the scientific evidence does not provide a one-size-fits-all answer, but rather a framework for individualized decisions. Patient-specific factors such as general health, compliance, individual risk profiles, and treatment preferences must influence the decision.
What does this mean for you? The decision must be lesion-specific.
What does that mean for your next dental visit? The research findings help you to better contextualize your dentist's recommendations and ask targeted questions if anything is unclear.
Science has intensively investigated this topic in recent years. For this article, more than 9 scientific studies were evaluated. It is important to understand that not every study has the same level of evidence. Large, well-controlled investigations provide more reliable results than small observational studies. The overall picture from these various studies is what we present to you here.
💡 What does this mean for you?
The decision must be lesion-specific. Discuss with your next dental visit what this specifically means for your situation.
What does "sealing in progressive risk" mean for me as a patient?
When it comes to sealing in progressive risk, the research situation is clearer than many people think. Here you will learn what current studies really show.
Tedesco et al. (2022) show that comparison groups with only oral hygiene instruction and observation did not have a significantly higher progression rate than active intervention groups in several studies, especially for enamel lesions without radiographic dentin involvement. These data support the position that active monitoring is a valid option for stable lesions.
The Cochrane systematic review on fissure sealing shows that unsealed fissures in children with low caries risk have only a low progression rate. The Number Needed to Treat (NNT) increases as the caries risk decreases, meaning that more and more sealings must be placed for low-risk patients to prevent caries.
Tasleem et al. (2025) report that even in the control groups (non-invasive measures), a considerable proportion of initial lesions remained stable over the follow-up period. The progression rates in the control groups were 15–35% over 24–36 months, meaning that 65–85% of untreated lesions were not progressive.
A central problem with monitoring is the lack of reliable progression predictors. Neither radiographic lesion depth nor clinical parameters like the ICDAS score allow for a safe prediction of which lesion will progress. This makes the decision between observation and intervention an individual risk assessment.
Methodologically, it must be noted that the included studies vary significantly in study design, follow-up period, and population selection. This heterogeneity limits the comparability of the results and explains why pooled effect estimates must be interpreted with caution. Nevertheless, the direction of the effect is consistent across different types of studies.
For transferability to the German-speaking care context, it is also relevant that a significant portion of the scientific evidence comes from Anglo-American or Scandinavian healthcare systems. Differences in reimbursement structure, treatment culture, and patient access can influence effect sizes without invalidating the basic statement.
Active monitoring is evidence-based for initial enamel lesions (E1/E2) in patients with low caries risk and good compliance. A prerequisite is a structured recall with standardized examination that allows for progression assessment.
For patients with increased caries risk, limited compliance, or radiographic progression, the threshold for active intervention (infiltration, sealing) should be set lower. The decision must be made individually and based on findings.
In daily practice, this means that the scientific evidence does not provide a one-size-fits-all answer, but rather a framework for individualized decisions. Patient-specific factors such as general health, compliance, individual risk profiles, and treatment preferences must influence the decision.
What does this mean for you? Diagnosis must weigh caries risk and lesion extent.
What does this mean for your next dental visit? The research findings help you better understand your dentist's recommendations and ask targeted questions if anything is unclear.
How do scientists arrive at these statements? They don't just evaluate a single study, but look at many investigations simultaneously. This allows them to determine if a result was random or if it is consistently confirmed. In this case, the findings are based on 9 scientific papers from different countries and research groups.
💡 What does this mean for you?
Diagnosis must weigh caries risk and lesion extent. Discuss with your dentist at your next visit what this specifically means for your situation.
What does "Monitoring as an Alternative to Intervention" mean for me as a patient?
One point that often causes uncertainty is monitoring as an alternative to intervention. However, science has made important progress in recent years.
What does the research say? Many non-cavitated lesions remain stable over years.
Where are there still open questions? Reliable progression predictors are largely missing.
What does this mean for your next dental visit? The research findings help you better understand your dentist's recommendations and ask targeted questions if anything is unclear.
What makes these results reliable? In medical research, the principle is: the more independent studies that arrive at the same result, the more certain the statement is. The type of study and the number of participants also play an important role. Large controlled studies with many participants provide more reliable results than small surveys.
💡 What does this mean for you?
The article must name observation as an evidence-based option. Discuss with your dentist at your next visit what this specifically means for your situation.
Frequently Asked Questions
Here we answer the questions patients most frequently ask about this topic:
❓ What is better: remineralization or infiltration?
Fluoride-based remineralization is the first step for initial lesions. The decision must be specific to the lesion.
❓ What does "sealing in a progressive risk" mean for me as a patient?
Pit sealing in at-risk children is well documented. Diagnosis must weigh caries risk and lesion extent.
❓ What does "monitoring as an alternative to intervention" mean for me as a patient?
Many non-cavitated lesions remain stable over years. The article must name observation as an evidence-based option.
❓ How certain are the results?
The scientific basis is solid, but not all questions have been definitively answered.
❓ Should I change my behavior based on this information?
Speak with your dentist before making any changes. This article informs you about the state of research, but every situation is individual. Your dentist knows your personal health status best.
❓ Where can I learn more?
You can find the detailed professional version of this article with all study details on Daily Dental Journal. For personal advice, please consult your dentist.
❓ What is the main message of this article?
Not every caries requires immediate therapy.
❓ Why are there differing opinions on this topic?
The conflict lies between the desire for early intervention and the recognition that many initial caries lesions remain stable without intervention.
🦷 When should you see a dentist?
Schedule an appointment with your dentist if:
- You are unsure if a recommended treatment is appropriate for you
- You have symptoms or notice changes
- You would like to get a second opinion
- You have questions about the topics described in this article
- It has been more than a year since your last dental visit
Important: This article does not replace a dentist's visit. It helps you go into the conversation informed.
What you can do yourself
Here are concrete steps you, as a patient, can take:
The most important thing in one sentence
The least invasive treatment is sometimes not a treatment, but a well-reasoned observation.
Source Information
This article is based on the DDJ Expert Article and current scientific evidence. All statements are supported by studies fully cited in the expert article.
The content has been adapted by the DDJ editorial team for patients. Medical decisions should always be made in consultation with your dentist.
Date: March 2026 · Language: American English (en-US) · Target Audience: Patients and interested laypersons