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viernes, 6 de marzo de 2026

Flowable Composite Resins in Dentistry: Advantages, Limitations, and Clinical Applications

Flowable Composite

Flowable composite resins are low-viscosity resin-based restorative materials widely used in modern restorative dentistry. Their improved handling characteristics and ability to adapt to complex cavity geometries have made them valuable in minimally invasive treatments.

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Originally introduced in the mid-1990s as modified composite resins with reduced filler content, flowable composites were designed to enhance adaptability, marginal sealing, and ease of placement. However, their mechanical limitations initially restricted their use to small restorations or as liner materials.

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Recent developments in next-generation flowable composites have improved filler technology and mechanical strength, expanding their clinical applications.

Characteristics of Flowable Composite Resins
Flowable composites differ from conventional hybrid or nanohybrid composites in several physical and chemical properties.

Reduced Viscosity
The primary characteristic of flowable composites is their low viscosity, which allows the material to flow easily into small or irregular cavity areas.

Lower Filler Content
Traditional flowable composites contain 37–53% filler by volume, compared with approximately 60–70% in conventional composites. This reduction improves flow but affects mechanical properties.

High Wettability and Adaptation
The low viscosity improves adaptation to cavity walls, potentially reducing void formation and microleakage.

Polymerization Characteristics
Flowable composites generally exhibit higher polymerization shrinkage due to increased resin matrix content.

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Clinical Indications
Flowable composites are indicated in several clinical situations due to their handling properties and adaptability.

Small Class I Restorations
They can be used in minimally invasive occlusal restorations where occlusal forces are limited.

Class V Cervical Lesions
Flowable composites are frequently used in non-carious cervical lesions because of their flexibility and stress absorption.

Pit and Fissure Sealants
Some clinicians use flowable composites as sealant materials due to their penetration ability.

Liner or Base Material
Flowable composites are commonly used as a liner beneath conventional composite restorations to improve adaptation.

Preventive Resin Restorations (PRR)
Their flow properties allow conservative treatment of early occlusal lesions.

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Advantages of Flowable Composite Resins
Several clinical advantages explain the popularity of flowable composites.

Excellent Adaptation
Their fluid consistency allows better penetration into micro-irregularities, improving marginal adaptation.

Ease of Placement
Flowable composites can be applied directly from a syringe, facilitating precise and controlled placement.

Reduced Risk of Air Entrapment
The material’s flow reduces the likelihood of void formation during placement.

Stress Absorption
The slightly lower modulus of elasticity may help absorb polymerization stress, particularly in cervical lesions.

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Limitations and Disadvantages
Despite their advantages, flowable composites present several limitations.

Lower Mechanical Strength
Because of their lower filler content, traditional flowable composites have reduced wear resistance and flexural strength compared with conventional composites.

Higher Polymerization Shrinkage
Increased resin matrix content leads to greater polymerization contraction, which may contribute to marginal gaps.

Limited Use in High-Stress Areas
Flowable composites should generally not be used alone in large posterior restorations subjected to heavy occlusal forces.

Increased Water Sorption
Higher resin content can lead to greater water absorption and potential discoloration over time.

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Next-Generation Flowable Composites
Recent technological developments have led to high-strength flowable composites, sometimes referred to as bulk-fill flowable or highly filled flowables.

Key improvements include:
▪️ Increased filler loading
▪️ Enhanced mechanical properties
▪️ Reduced polymerization shrinkage stress
▪️ Improved depth of cure

These materials may now be used as bulk-fill base layers in posterior restorations, followed by a conventional composite occlusal layer.
Examples of modern advancements include nanofilled and nanohybrid flowable composites that combine improved mechanical strength with superior handling.

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💬 Discussion
The role of flowable composite resins continues to evolve in restorative dentistry. While early formulations were limited to liner applications or small restorations, modern materials have significantly improved mechanical properties.
However, clinicians must still recognize that material selection should be based on biomechanical considerations. Flowable composites offer superior adaptation and handling but should not replace conventional restorative composites in high-load-bearing areas.
Current research supports their use as liners, sealants, and minimally invasive restorative materials, particularly when combined with layered restorative techniques.

✍️ Conclusion
Flowable composite resins represent versatile restorative materials with excellent handling and adaptation properties. While their mechanical limitations restrict their use in large stress-bearing restorations, advances in material science have expanded their indications in modern minimally invasive dentistry.
Appropriate case selection and correct layering techniques remain essential for long-term clinical success.

🎯 Clinical Recommendations
▪️ Use flowable composites as liners under conventional composite restorations.
▪️ Indicate them for small occlusal restorations and cervical lesions.
▪️ Avoid their exclusive use in large posterior load-bearing cavities.
▪️ Consider next-generation high-strength flowable composites when improved mechanical performance is required.
▪️ Apply proper adhesive protocols to ensure optimal marginal sealing.

📚 References

✔ Ilie, N., & Hickel, R. (2011). Resin composite restorative materials. Australian Dental Journal, 56(Suppl 1), 59–66. https://doi.org/10.1111/j.1834-7819.2010.01296.x
✔ Bayne, S. C., Thompson, J. Y., Swift, E. J., Stamatiades, P., & Wilkerson, M. (1998). A characterization of first-generation flowable composites. Journal of the American Dental Association, 129(5), 567–577. https://doi.org/10.14219/jada.archive.1998.0274
✔ Ilie, N., & Stark, K. (2014). Curing behavior of high-viscosity bulk-fill composites. Journal of Dentistry, 42(8), 977–985. https://doi.org/10.1016/j.jdent.2014.05.012
✔ Garoushi, S., Vallittu, P., & Lassila, L. (2013). Characterization of fluoride releasing restorative dental materials. Dental Materials Journal, 32(4), 542–549. https://doi.org/10.4012/dmj.2012-259

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jueves, 5 de marzo de 2026

Resin Infiltration in Dentistry: Indications, Clinical Procedure, and Role in Early Caries Management

Resin Infiltration

Resin infiltration is a micro-invasive dental technique designed to arrest the progression of non-cavitated enamel caries lesions.

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The procedure involves the penetration of a low-viscosity light-curing resin into the porous structure of demineralized enamel, effectively blocking diffusion pathways for acids and cariogenic substrates.

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This technique has gained clinical relevance in pediatric dentistry, orthodontic patients, and early caries management, as it allows clinicians to treat lesions without traditional mechanical removal of tooth structure.

What Is Resin Infiltration?
Resin infiltration is a micro-invasive treatment for early enamel caries that penetrates the lesion body with a highly fluid resin monomer. Once polymerized, the resin occludes enamel microporosities and stabilizes the lesion.
The technique is commonly associated with commercial systems based on triethylene glycol dimethacrylate (TEGDMA) resin matrices.

The primary objectives are:
▪️ Arrest progression of early carious lesions
▪️ Improve the aesthetic appearance of white spot lesions
▪️ Preserve healthy dental tissues following minimal intervention dentistry principles

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Is Resin Infiltration a Remineralization Technique?
Resin infiltration is not a remineralization therapy in the strict biochemical sense. Traditional remineralization methods aim to restore mineral content within enamel through the deposition of calcium and phosphate ions.

Instead, resin infiltration functions as a diffusion barrier:
▪️ It physically blocks the microporous enamel structure
▪️ Prevents acids and nutrients from reaching cariogenic bacteria
▪️ Stabilizes the lesion by reinforcing the weakened enamel matrix
Therefore, it is best classified as a micro-invasive caries arrest technique, rather than a chemical remineralization therapy.

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Clinical Indications
Resin infiltration is recommended in the following situations:

Early Enamel Caries (Non-Cavitated Lesions)
▪️ ICDAS 1 and 2 lesions
▪️ Smooth surface enamel lesions
▪️ Proximal early caries detected radiographically

Post-Orthodontic White Spot Lesions
White spot lesions commonly develop around orthodontic brackets due to plaque accumulation and demineralization.
Resin infiltration improves aesthetics by modifying the refractive index of the enamel, reducing the opacity of white spots.

Initial Interproximal Lesions
Radiographic lesions confined to the outer dentin or enamel layers can often be stabilized using infiltration without restorative drilling.

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Contraindications
Resin infiltration is not indicated when:

▪️ Cavitation is clinically present
▪️ Lesions extend deeply into dentin
▪️ There is active plaque accumulation with poor oral hygiene
▪️ Isolation cannot be achieved

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Step-by-Step Clinical Procedure
The clinical protocol for resin infiltration typically follows standardized steps:

1. Tooth Isolation
Isolation is achieved using rubber dam or appropriate moisture control to prevent contamination.

2. Enamel Surface Conditioning
The lesion surface is etched with 15% hydrochloric acid gel for approximately 120 seconds. This step removes the superficial pseudo-intact enamel layer that blocks resin penetration.

3. Rinsing and Drying
The acid is thoroughly rinsed, and the surface is dried. Ethanol drying agents may be applied to improve lesion visualization and resin penetration.

4. Resin Application
A low-viscosity infiltrant resin is applied and allowed to penetrate the lesion body through capillary action.

5. Light Polymerization
The resin is light-cured to harden and stabilize the infiltrated structure.

6. Second Application (Optional)
A second layer may be applied to maximize infiltration and seal residual microporosities.

7. Finishing and Polishing
Final polishing improves surface smoothness and aesthetics.

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Clinical Advantages of Resin Infiltration
Resin infiltration provides several clinical benefits:

▪️ Minimally invasive caries management
▪️ Preservation of sound enamel
▪️ Immediate aesthetic improvement in white spot lesions
▪️ Reduced need for restorative treatment
▪️ Effective arrest of early caries progression

📊 Comparative Table: Remineralization and Micro-Invasive Strategies for Early Caries Lesions

Treatment Method Mechanism of Action Clinical Limitations
Fluoride Varnish Enhances enamel remineralization by promoting fluorapatite formation and reducing enamel solubility Limited penetration into deeper subsurface lesions
CPP-ACP (Casein Phosphopeptide-Amorphous Calcium Phosphate) Provides bioavailable calcium and phosphate ions to promote enamel remineralization Requires frequent application and patient compliance
Silver Diamine Fluoride (SDF) Arrests caries through antibacterial effects and remineralization Causes black staining of carious lesions
Resin Infiltration Penetrates enamel microporosities and blocks diffusion pathways of acids and bacteria Not effective for cavitated or deep dentin lesions
Glass Ionomer Sealants Releases fluoride and provides mechanical sealing of pits and fissures Lower long-term retention compared with resin sealants
💬 Discussion
The concept of micro-invasive dentistry has reshaped the management of early caries lesions. Resin infiltration bridges the gap between preventive remineralization therapies and restorative intervention.
While remineralizing agents such as fluoride or calcium-phosphate compounds restore mineral content, they often have limited penetration into deeper lesion bodies. Resin infiltration overcomes this limitation by physically sealing the porous enamel network.
Clinical studies demonstrate that infiltration significantly reduces lesion progression compared with untreated lesions. However, long-term success depends heavily on patient oral hygiene and caries risk management.

✍️ Conclusion
Resin infiltration represents an effective micro-invasive strategy for managing early enamel caries and white spot lesions. Although it does not chemically remineralize enamel, it arrests lesion progression by sealing microporosities and reinforcing the enamel structure.
When combined with preventive strategies such as fluoride therapy and dietary control, resin infiltration contributes significantly to modern minimally invasive dentistry.

🎯 Clinical Recommendations
▪️ Use resin infiltration for non-cavitated enamel lesions (ICDAS 1–2).
▪️ Consider the technique in post-orthodontic white spot lesions.
▪️ Ensure strict moisture control during the procedure.
▪️ Combine infiltration with fluoride-based remineralization strategies.
▪️ Evaluate caries risk before selecting this treatment approach.

📚 References

✔ Ekstrand, K. R., Martignon, S., & Ricketts, D. J. (2010). Detection and activity assessment of primary coronal caries lesions: A methodologic study. Operative Dentistry, 35(4), 403–411. https://doi.org/10.2341/09-060-L
✔ Paris, S., Meyer-Lueckel, H., Kielbassa, A. M. (2007). Resin infiltration of natural caries lesions. Journal of Dental Research, 86(7), 662–666. https://doi.org/10.1177/154405910708600715
✔ Paris, S., Bitter, K., Renz, H., Hopfenmüller, W., Meyer-Lueckel, H. (2010). Progression of proximal caries lesions after infiltration: A randomized clinical trial. Journal of Dental Research, 89(8), 823–826. https://doi.org/10.1177/0022034510369289
✔ Featherstone, J. D. B. (2004). The continuum of dental caries—Evidence for a dynamic disease process. Journal of Dental Research, 83(Spec Iss C), C39–C42. https://doi.org/10.1177/154405910408301S08

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miércoles, 4 de marzo de 2026

Contraindicated Medications in Children: A Clinical Guide for Pediatric Dentists

Contraindicated Medications

The prescription of systemic and local pharmacological agents in pediatric dentistry requires rigorous evaluation of age-related pharmacokinetics, organ maturation, and potential adverse effects.

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Contraindicated medications in children represent a critical safety concern due to differences in hepatic metabolism, renal clearance, blood–brain barrier permeability, and developing dental tissues.

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Inappropriate drug selection may result in tooth discoloration, respiratory depression, Reye syndrome, cartilage toxicity, or fatal cardiotoxic events. This clinical guide provides evidence-based recommendations for dental practitioners to identify and avoid medications that are unsafe in pediatric populations.

Pharmacological Considerations in Pediatric Patients
Children are not “small adults.” Drug distribution, metabolism, and excretion vary according to age and developmental stage:

▪️ Reduced hepatic enzymatic activity in neonates
▪️ Immature renal filtration
▪️ Increased body water percentage
▪️ Higher susceptibility to central nervous system depression
These physiological variables explain why several medications routinely used in adults are contraindicated or restricted in children.

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Major Contraindicated or Restricted Medications in Pediatric Dentistry

1. Tetracyclines
Tetracycline and doxycycline (in young children) are contraindicated in children under 8 years due to permanent tooth discoloration and enamel hypoplasia. These drugs chelate calcium ions and become incorporated into developing dentin and enamel.

2. Aspirin (Acetylsalicylic Acid)
Aspirin is contraindicated in children and adolescents with viral infections because of its association with Reye syndrome, a rare but potentially fatal condition characterized by acute encephalopathy and hepatic dysfunction.

3. Codeine and Tramadol
The U.S. Food and Drug Administration (FDA) contraindicates codeine and tramadol in children under 12 years due to the risk of respiratory depression and death, particularly in ultra-rapid CYP2D6 metabolizers.

4. Fluoroquinolones
Fluoroquinolones (e.g., ciprofloxacin) are generally avoided in children due to concerns about cartilage toxicity and musculoskeletal adverse effects, except in specific medically justified situations.

5. Benzocaine (Topical Use in Infants)
Topical benzocaine has been associated with methemoglobinemia, especially in children under 2 years of age.

6. Chloramphenicol
Chloramphenicol is linked to gray baby syndrome, caused by immature hepatic glucuronidation pathways in neonates.

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Clinical Implications in Dental Practice
In pediatric dental care, the most frequently prescribed drugs include analgesics, antibiotics, and local anesthetics. The clinician must:

▪️ Verify age-appropriate dosing
▪️ Avoid contraindicated agents
▪️ Evaluate systemic health status
▪️ Consider drug interactions
▪️ Educate caregivers about correct administration
Evidence-based pediatric dosing charts and updated clinical guidelines should be consulted prior to prescribing.

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💬 Discussion
Safe prescribing in pediatric dentistry requires integration of pharmacological knowledge with individualized risk assessment. While certain medications such as tetracyclines and codeine are clearly contraindicated, others require careful consideration based on age, weight, and systemic conditions.
The trend toward minimizing opioid prescriptions and favoring weight-adjusted non-opioid analgesics aligns with current safety recommendations. Furthermore, antibiotic stewardship remains essential to reduce antimicrobial resistance and prevent adverse drug reactions.
Continuous professional education and adherence to updated regulatory guidelines significantly reduce medication-related morbidity in children.

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✍️ Conclusion
Contraindicated medications in children must be carefully identified and avoided in dental practice to prevent serious systemic and dental complications. Evidence-based prescribing, age-appropriate dosing, and caregiver education are fundamental pillars of pediatric pharmacological safety.

🎯 Clinical Recommendations
▪️ Avoid tetracyclines in children under 8 years.
▪️ Do not prescribe codeine or tramadol in children under 12 years.
▪️ Avoid aspirin due to Reye syndrome risk.
▪️ Use benzocaine cautiously and avoid in infants.
▪️ Follow weight-based dosing for all systemic medications.
▪️ Consult updated pediatric pharmacology references before prescribing.

📚 References

✔ American Academy of Pediatric Dentistry. (2023). Use of antibiotic therapy for pediatric dental patients. The Reference Manual of Pediatric Dentistry. Chicago, IL: American Academy of Pediatric Dentistry.
✔ Food and Drug Administration. (2017). FDA Drug Safety Communication: FDA restricts use of codeine and tramadol medicines in children. U.S. Department of Health and Human Services.
✔ Nahata, M. C., & Allen, L. V. (2008). Extemporaneous drug formulations. Clinical Therapeutics, 30(11), 2112–2119. https://doi.org/10.1016/j.clinthera.2008.11.020
✔ World Health Organization. (2012). WHO guidelines on the pharmacological treatment of persisting pain in children with medical illnesses. Geneva: WHO Press.

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martes, 3 de marzo de 2026

Dislocated Mandible Treatment: Nelaton Maneuver Step-by-Step and Prevention

Dislocated Mandible - Nelaton Maneuver

Mandibular dislocation, commonly known as a “dislocated” or “out-of-place jaw", is an acute condition characterized by anterior displacement of the mandibular condyle beyond the articular eminence.

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The expression “dislocated mandible” is intentionally used here to facilitate general understanding, although the precise clinical term is mandibular luxation.

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This condition primarily affects the temporomandibular joint (TMJ) and requires prompt management to prevent persistent muscular spasm, pain, and recurrent instability. A clear understanding of etiology, reduction techniques, and preventive strategies is essential in dental and medical practice.

Why Does the Mandible Dislocate?
Mandibular dislocation occurs when the condyle translates excessively anterior to the articular eminence and becomes mechanically locked. Sustained contraction of the lateral pterygoid muscle maintains the mandible in the displaced position.

Etiological Factors
1. Excessive mouth opening
▪️ Yawning
▪️ Prolonged dental procedures
▪️ Endotracheal intubation
2. Trauma
▪️ Direct impact to the chin
▪️ Iatrogenic manipulation
3. Temporomandibular joint hypermobility
▪️ Ligamentous laxity
▪️ Connective tissue disorders
4. Neuromuscular disorders
▪️ Dystonia
▪️ Seizures
5. History of recurrent dislocation
Bilateral anterior dislocation is the most common presentation.

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Clinical Features

▪️ Persistent open-mouth posture
▪️ Inability to achieve occlusion
▪️ Preauricular pain
▪️ Drooling
▪️ Speech impairment
▪️ Anxiety and muscle spasm

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Dislocated Mandible Treatment
The first-line management for acute anterior luxation is manual reduction, most commonly performed using the Nelaton maneuver (classical intraoral reduction technique).
Early intervention increases success rates and reduces the need for sedation or surgical intervention.

Nelaton Maneuver: Step-by-Step Technique
The Nelaton maneuver is a conservative intraoral method indicated for acute anterior mandibular dislocation.

Preparation
1. Seat the patient upright with adequate head support.
2. Explain the procedure to minimize anxiety-induced muscle contraction.
3. Wear gloves and protect thumbs with gauze to prevent bite injury.

Reduction Procedure
1. Thumb Placement
Place both thumbs intraorally on the occlusal surfaces of the mandibular molars.
2. External Finger Support
Wrap the remaining fingers around the inferior border of the mandible.
3. Downward Pressure
Apply steady inferior pressure to disengage the condyles from the articular eminence.
4. Posterior Guidance
While maintaining downward pressure, guide the mandible posteriorly.
5. Repositioning
Allow the condyles to return into the glenoid fossae.
6. Immediate Thumb Withdrawal
Quickly remove thumbs once reduction occurs to avoid bite injury.
A palpable or audible click often confirms successful repositioning.

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Post-Reduction Care

▪️ Soft diet for 1–2 weeks
▪️ Avoid excessive mouth opening
▪️ Short-term nonsteroidal anti-inflammatory medication
▪️ Temporary chin support if indicated
Recurrent cases require referral to an oral and maxillofacial specialist.

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Preventive Measures
Prevention is essential in patients with prior episodes or joint hypermobility.

Recommended Actions
▪️ Avoid extreme mouth opening
▪️ Use bite blocks during prolonged dental procedures
▪️ Educate patients about controlled yawning
▪️ Manage underlying TMJ instability
▪️ Consider botulinum toxin injections in selected recurrent cases

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💬 Discussion
Management of mandibular dislocation requires early diagnosis and appropriate manual reduction. The Nelaton maneuver remains the first-line conservative treatment due to its simplicity and high effectiveness in acute anterior cases.
Delayed intervention may lead to increased muscle spasm, complicating reduction and sometimes necessitating sedation or general anesthesia. Chronic recurrent dislocation may require minimally invasive techniques such as autologous blood injection or surgical approaches including eminectomy.
Current evidence supports conservative management as the initial therapeutic approach, reserving surgical intervention for refractory or recurrent instability.

✍️ Conclusion
Dislocated mandible treatment with the Nelaton maneuver is a safe and evidence-based first-line approach for acute anterior luxation. Prompt reduction, appropriate technique, and preventive counseling significantly reduce recurrence and long-term complications.

🎯 Clinical Recommendations
▪️ Perform manual reduction as early as possible.
▪️ Protect thumbs during the Nelaton maneuver.
▪️ Provide post-reduction dietary and behavioral instructions.
▪️ Refer recurrent cases for specialist evaluation.
▪️ Implement preventive strategies during dental procedures.

📚 References

✔ Bouloux, G. F., & Steed, M. B. (2017). Complications of temporomandibular joint dislocation. Oral and Maxillofacial Surgery Clinics of North America, 29(2), 147–158. https://doi.org/10.1016/j.coms.2016.12.003
✔ Shah, K., & McGurk, M. (2007). Recurrent dislocation of the temporomandibular joint: Review of the literature and report of a new technique. British Journal of Oral and Maxillofacial Surgery, 45(7), 564–567. https://doi.org/10.1016/j.bjoms.2006.10.012
✔ Adekeye, E. O., & Shamia, R. I. (1976). Recurrent dislocation of the temporomandibular joint: Treatment by autologous blood injection. International Journal of Oral Surgery, 5(4), 164–168. https://doi.org/10.1016/S0300-9785(76)80064-0
✔ Kim, Y. K., Yun, P. Y., Kim, S. G., & Kim, J. D. (2008). Treatment of recurrent temporomandibular joint dislocation. Journal of Oral and Maxillofacial Surgery, 66(10), 2174–2179. https://doi.org/10.1016/j.joms.2008.06.033

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Dental Sealants in Children: Types, Benefits, and Evidence-Based Application Technique

Dental Sealants

Dental sealants in children are a cornerstone of preventive pediatric dentistry and play a critical role in reducing occlusal caries in permanent molars.

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Although fluoride exposure significantly decreases smooth-surface caries, pits and fissures remain highly susceptible due to anatomical complexity and biofilm retention.

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Sealant placement during the early eruption phase of first and second permanent molars is strongly supported by contemporary caries management protocols and public health policies.

Types of Dental Sealants

1. Resin-Based Sealants
Resin-based materials are the most widely used sealants and may be unfilled or filled.

▪️ Light-cured systems are the most common.
▪️ High retention rates when proper isolation is achieved.
▪️ Superior mechanical properties compared to glass ionomer.

Advantages: excellent long-term retention and durability.
Limitations: moisture-sensitive and technique-dependent.

2. Glass Ionomer Sealants
Glass ionomer cement (GIC) sealants are indicated in partially erupted molars or situations where isolation is difficult.

▪️ Chemical adhesion to enamel.
▪️ Fluoride release capability.
▪️ Lower retention compared to resin-based materials.

Advantages: fluoride release and tolerance to moisture.
Limitations: lower mechanical strength and retention.

3. Resin-Modified Glass Ionomer Sealants (RMGI)
These materials combine properties of resin and glass ionomer.

▪️ Improved retention compared to conventional GIC.
▪️ Sustained fluoride release.
▪️ Moderate moisture tolerance.

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Benefits of Dental Sealants in Children
Numerous clinical trials demonstrate that pit-and-fissure sealants significantly reduce caries incidence in permanent molars.

Key benefits include:
▪️ Up to 80% reduction in occlusal caries within the first two years
▪️ Non-invasive and painless procedure
▪️ Cost-effective preventive strategy
▪️ Protection during the highest caries-risk period

According to the American Dental Association and the Centers for Disease Control and Prevention, sealants are safe, effective, and recommended for school-aged children at increased caries risk.

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Indications and Patient Selection
Sealants are recommended for:

▪️ Newly erupted permanent molars
▪️ Deep pits and fissures
▪️ High caries-risk patients
▪️ Children with limited manual dexterity
They are not indicated on cavitated lesions requiring restorative treatment.

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Application Technique (Step-by-Step Protocol)
Proper technique is essential for long-term retention.

1. Tooth Cleaning
Remove debris using a non-fluoridated pumice slurry.
2. Isolation
Achieve effective moisture control using rubber dam or cotton rolls with suction.
3. Acid Etching
Apply 35–37% phosphoric acid for 15–20 seconds.
4. Rinse and Dry
Thorough rinsing followed by air drying until a chalky enamel surface is observed.
5. Sealant Placement
Apply material into pits and fissures, avoiding air bubbles.
6. Light Curing (if applicable)
Cure according to manufacturer instructions.
7. Occlusal Check and Evaluation
Verify retention and occlusion.
Periodic recall visits are mandatory to evaluate sealant integrity.

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💬 Discussion
The effectiveness of dental sealants in children is strongly supported by systematic reviews and long-term cohort studies. Retention remains the most critical determinant of clinical success. Moisture contamination is the primary cause of failure, highlighting the importance of adequate isolation.
Glass ionomer sealants may be preferred in partially erupted molars, although resin-based materials demonstrate superior retention rates. Evidence suggests that even partially lost sealants may retain residual material within fissures, continuing to provide protection.
Public health programs incorporating sealants have demonstrated significant reductions in caries prevalence, particularly in underserved populations.

✍️ Conclusion
Dental sealants in children are a highly effective, evidence-based preventive measure against occlusal caries. When applied using proper technique and patient selection criteria, sealants significantly reduce caries risk during vulnerable developmental periods. Integration into routine pediatric dental care is strongly recommended.

🎯 Clinical Recommendations
▪️ Apply sealants to all high-risk newly erupted permanent molars.
▪️ Ensure strict moisture control during placement.
▪️ Prefer resin-based sealants when adequate isolation is possible.
▪️ Schedule regular follow-up for retention assessment.
▪️ Combine sealants with fluoride therapy and oral hygiene education.

📊 Comparative Table: Additional Preventive Measures in the Dental Office

Preventive Measure Clinical Benefits Clinical Considerations
Topical Fluoride Varnish Enhances enamel remineralization and reduces caries incidence Requires periodic reapplication
Professional Prophylaxis Removes plaque and calculus; improves gingival health Does not provide long-term caries protection alone
Silver Diamine Fluoride (SDF) Arrests active caries lesions non-invasively May cause black staining of carious lesions
Oral Hygiene Instruction Improves patient self-care and plaque control Dependent on patient compliance
📚 References

✔ Ahovuo-Saloranta, A., Forss, H., Walsh, T., Nordblad, A., Mäkelä, M., & Worthington, H. V. (2017). Sealants for preventing dental decay in the permanent teeth. Cochrane Database of Systematic Reviews, 7(7), CD001830. https://doi.org/10.1002/14651858.CD001830.pub5
✔ Wright, J. T., Tampi, M. P., Graham, L., Estrich, C., Crall, J. J., Fontana, M., … Carrasco-Labra, A. (2016). Sealants for preventing and arresting pit-and-fissure occlusal caries in primary and permanent molars. Journal of the American Dental Association, 147(8), 672–682.e12. https://doi.org/10.1016/j.adaj.2016.06.003
✔ Centers for Disease Control and Prevention. (2022). School sealant programs: An evidence-based approach. Atlanta, GA: U.S. Department of Health and Human Services.
✔ American Dental Association Council on Scientific Affairs. (2008). Evidence-based clinical recommendations for the use of pit-and-fissure sealants. Journal of the American Dental Association, 139(3), 257–268. https://doi.org/10.14219/jada.archive.2008.0155

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