Amoxicillin in Pediatric Dentistry: Evidence-Based Uses and Safety Recommendations

Amoxicillin remains the first-line antibiotic in pediatric dentistry due to its broad-spectrum activity, excellent safety profile, and effectiveness against common odontogenic pathogens.

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Dental Article 🔽 Antibiotics in Pediatric Dentistry: When They Are Needed and When They Are Not ... This guide reviews indications, contraindications, dosing considerations, and clinical decision-making for antibiotics in pediatric patients, with updated evidence-based recommendations.

However, modern guidelines emphasize that antibiotics should not replace dental treatment and must be prescribed only when truly indicated. Understanding evidence-based uses, dosing recommendations, and limitations is essential to avoid overprescription and antimicrobial resistance.

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✅ When Is Amoxicillin Indicated in Pediatric Dentistry?
According to the American Academy of Pediatric Dentistry (AAPD) and the American Dental Association (ADA), amoxicillin is indicated only in infections with systemic involvement, facial swelling, or when the infection spreads beyond the local tooth structure.

Key Indications
▪️ Acute odontogenic infections with systemic signs (fever, malaise)
▪️ Facial cellulitis
▪️ Acute apical abscess with systemic involvement
▪️ Lymphadenitis associated with dental infection
▪️ Postoperative management in select surgical cases (not routine)

Amoxicillin is not indicated for:
▪️ Localized pulpitis
▪️ Reversible or irreversible pulpitis without swelling
▪️ Routine pulpotomies or pulpectomies
▪️ Dental pain without infection

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✅ Mechanism of Action
Amoxicillin is a β-lactam antibiotic that inhibits bacterial cell wall synthesis. It has strong activity against:

▪️ Streptococcus mutans
▪️ Streptococcus anginosus group
▪️ Prevotella species (partially)
It is less effective against β-lactamase–producing organisms unless combined with clavulanic acid.

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✅ Pediatric Dosage Recommendations
AAPD guidelines recommend:

▪️ Children (less than 40 kg):
20–40 mg/kg/day divided every 8 hours or 25–45 mg/kg/day divided every 12 hours
▪️ Children ≥40 kg:
Standard adult dosing (500 mg every 8 hours)

Treatment duration typically lasts 5–7 days, with emphasis on clinical improvement within 48–72 hours.

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✅ Safety Profile and Contraindications
Amoxicillin is considered safe, but clinicians must be aware of:

➤ Adverse Reactions
▪️ Mild gastrointestinal symptoms
▪️ Rash
▪️ Hypersensitivity reactions
▪️ Rare anaphylaxis in penicillin-allergic patients

➤ Contraindications
▪️ Confirmed penicillin allergy
▪️ Previous severe reaction to β-lactams

📊 Comparative Table: Amoxicillin Efficacy in Odontogenic Infections

Aspect	Advantages	Limitations
Acute Apical Abscess with Systemic Involvement	High efficacy against Streptococcus species; reduces systemic symptoms	Does not eliminate infection without drainage or pulpal treatment
Facial Cellulitis	Strong action against predominant pathogens; rapid improvement in swelling	Limited effect against β-lactamase–producing anaerobes
Lymphadenitis of Odontogenic Origin	Effective in reducing lymph node tenderness and inflammation	Requires elimination of dental source to prevent recurrence
Periodontal Abscess (Pediatric)	Adjunctive use reduces systemic manifestations	Not effective without mechanical debridement
Pericoronitis (Mixed Dentition)	Useful when systemic signs present	Resistance observed in anaerobic flora; requires irrigation
Odontogenic Sinus Tract with Infection Spread	Helps control systemic spread; improves healing after root canal/extraction	Ineffective alone; definitive treatment required

💬 Discussion
Although amoxicillin is highly effective for pediatric odontogenic infections, studies show that nearly 80% of dental antibiotic prescriptions are unnecessary. Overuse contributes to resistant strains such as β-lactamase–producing Prevotella.
Correct diagnosis, radiographic evaluation, and definitive dental treatment remain the cornerstone of care. Antibiotics serve as an adjunct, not a substitute, for pulp therapy, drainage, or extraction.

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🔎 Recommendations
1. Prescribe amoxicillin only when systemic involvement is present.
2. Always perform definitive treatment (pulpotomy, pulpectomy, extraction) regardless of antibiotic use.
3. Reassess within 48–72 hours to confirm improvement.
4. For patients with penicillin allergy, consider clindamycin or azithromycin.
5. Avoid prescribing antibiotics for dental pain without infection.

✍️ Conclusion
Amoxicillin remains a highly effective and safe option for managing pediatric odontogenic infections, provided it is used responsibly and following current evidence-based guidelines. Proper diagnosis and definitive dental treatment, alongside prudent antibiotic use, ensure optimal outcomes and minimize antimicrobial resistance.

📚 References

✔ American Academy of Pediatric Dentistry. (2023). Use of antibiotic therapy for pediatric dental patients. AAPD Clinical Guidelines. https://www.aapd.org
✔ Dar-Odeh, N., Fadel, H., Abu-Hammad, S., Abdeljawad, R., & Abu-Hammad, O. (2018). Antibiotic prescribing for dental infections: A review. British Dental Journal, 225(5), 353–359. https://doi.org/10.1038/sj.bdj.2018.733
✔ Robertson, D., & Smith, A. J. (2009). The microbiology of the acute dental abscess. Journal of Medical Microbiology, 58(2), 155–162. https://doi.org/10.1099/jmm.0.003517-0
✔ Segura-Egea, J. J., Gould, K., & Şen, B. H. (2017). Antibiotics in endodontics: A review. International Endodontic Journal, 50(12), 1169–1184. https://doi.org/10.1111/iej.12868

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Pulp Necrosis in Primary Teeth: Diagnosis and Evidence-Based Management

Pulp necrosis in primary teeth is a common consequence of untreated caries, trauma, or chronic inflammation.

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Early detection is crucial to prevent infection, pathological root resorption, and damage to the developing permanent successor. Understanding accurate diagnostic criteria and selecting the appropriate evidence-based treatment is essential for successful outcomes in pediatric patients.

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✅ Etiology of Pulp Necrosis in Primary Teeth
Primary teeth are particularly vulnerable to necrosis due to:

▪️ Extensive caries progression
▪️ Anatomically thinner enamel and dentin
▪️ Traumatic dental injuries
▪️ Bacterial invasion of the pulp chamber
▪️ Chronic pulpal inflammation progressing to necrosis

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✅ Clinical and Radiographic Diagnosis
Accurate diagnosis relies on a combination of:

➤ Patient history (spontaneous pain, swelling, trauma)

➤ Clinical signs
▪️ Tooth discoloration (grayish)
▪️ Sinus tract
▪️ Tenderness to percussion
▪️ Gingival swelling

➤ Radiographic findings
▪️ Furcation radiolucency
▪️ Pathological root resorption
▪️ Periodontal space widening
▪️ Loss of lamina dura

In primary teeth, pulp testing methods like thermal or electric tests are unreliable, making radiographic and clinical findings essential.

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✅ Management of Pulp Necrosis in Primary Teeth
Once necrosis is confirmed, vital pulp therapies are contraindicated. Treatment options include:

➤ Pulpectomy
The preferred treatment when the tooth is restorable and the infection can be adequately controlled.
Key principles:
▪️ Thorough canal debridement
▪️ Irrigation with 2.5% sodium hypochlorite or chlorhexidine
▪️ Obturating canals with resorbable materials such as iodoform-based pastes (Vitapex/Metapex)
▪️ Final restoration, ideally with a stainless steel crown

➤ Extraction
Indicated when:
▪️ The tooth is non-restorable
▪️ There is excessive root resorption
▪️ Infection compromises the permanent successor
▪️ Patient cooperation is insufficient

➤ Antibiotics
Not routinely recommended unless:
▪️ Facial cellulitis
▪️ Systemic involvement (fever, malaise)
▪️ Spread of infection

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✅ Prognosis
Successful pulpectomy has a 70–85% success rate, depending on canal anatomy, irrigation protocol, and obturation material. Failure occurs when infection persists, when restoration is inadequate, or when premature root resorption affects sealing.

📊 Comparative Table: Pulpectomy vs Extraction in Necrotic Primary Teeth

Aspect	Advantages	Limitations
Pulpectomy	Preserves arch space; maintains function; prevents premature tooth loss; avoids malocclusions	Technique sensitive; lower success in multirooted teeth; requires patient cooperation
Extraction	Quick relief of infection; avoids complex instrumentation; suitable for non-restorable teeth	Loss of arch space; risk of mesial drift; possible need for space maintainers

💬 Discussion
Managing necrotic primary teeth requires careful consideration of the child's age, behavior, the strategic value of the tooth, and the proximity to the permanent successor. Resorbable obturation materials remain essential, as non-resorbable materials can interfere with exfoliation. Current research supports the use of iodoform-based pastes due to superior antibacterial activity and predictable resorption.

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🔎 Recommendations
▪️ Use radiographic criteria as the primary diagnostic tool for suspected necrosis.
▪️ Select pulpectomy when infection is localized and the tooth is strategically important.
▪️ Extract teeth with advanced pathology or poor restorative prognosis.
▪️ Avoid antibiotics unless systemic involvement is present.
▪️ Always protect the treated tooth with a stainless steel crown to ensure long-term success.

✍️ Conclusion
Pulp necrosis in primary teeth requires timely diagnosis and evidence-based intervention to prevent complications and safeguard the developing dentition. Pulpectomy remains the treatment of choice for restorable necrotic teeth, while extraction is indicated in severe cases. Proper case selection and modern pediatric endodontic protocols significantly improve outcomes.

📚 References

✔ American Academy of Pediatric Dentistry. (2021). Pulp therapy for primary and immature permanent teeth. AAPD Clinical Guidelines. https://www.aapd.org
✔ Barja-Fidalgo, F., Ribeiro, A., & Pauleto, A. (2011). Clinical and radiographic outcome of primary molars pulpectomies using different filling materials. Journal of Clinical Pediatric Dentistry, 35(4), 359–364. https://doi.org/10.17796/jcpd.35.4.j1471781m0011654
✔ Fuks, A. B. (2008). Pulp therapy for the primary dentition. Pediatric Dentistry, 30(3), 230–236.
✔ Nadin, G., Goel, B. R., & Yeung, C. A. (2003). Pulp treatment for primary teeth. Cochrane Database of Systematic Reviews, (1), CD003220. https://doi.org/10.1002/14651858.CD003220

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Complete Guide to Pulp Therapy in Primary Teeth: Materials, Techniques, and Success Rates

Pulp therapy in primary teeth is a cornerstone of pediatric dentistry, aiming to maintain tooth vitality, prevent infection, and preserve arch space until natural exfoliation.

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Advances in biomaterials such as MTA, Biodentine, and improved clinical protocols have significantly increased success rates. Understanding the differences between pulpotomy, pulpectomy, indirect pulp treatment (IPT), and apexification is essential for evidence-based care.

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✅ Pulp Therapy Techniques

➤ Indirect Pulp Treatment (IPT)
IPT is indicated when deep caries is present but the tooth remains vital and asymptomatic. Selective caries removal minimizes pulp exposure and promotes remineralization. High-fluoride glass ionomer and resin-modified glass ionomer (RMGI) are widely used as liners.

➤ Direct Pulp Cap (DPC)
Used when a small mechanical pulp exposure occurs. Bioceramics like MTA and Biodentine create a durable dentin bridge and exhibit excellent biocompatibility.

➤ Pulpotomy
Indicated in cases of carious pulp exposure with preserved radicular pulp vitality. Popular medicaments include MTA, Biodentine, and historically formocresol, although the latter is no longer recommended due to toxicity concerns.

➤ Pulpectomy
Indicated for irreversible pulpitis or necrosis. It consists of removing necrotic tissue and obturating canals with resorbable materials such as iodoform-based pastes (Vitapex, Metapex) or zinc oxide–eugenol.

➤ Apexogenesis & Apexification in Young Permanent Teeth
Although not used in primary teeth, they are fundamental when treating immature permanent teeth with open apices.

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✅ Materials Used in Pulp Therapy

➤ Mineral Trioxide Aggregate (MTA)
Known for high biocompatibility, antibacterial properties, and superior long-term sealing.

➤ Biodentine
A bioactive dentin substitute with faster setting time and strong pulpal healing potential.

➤ Zinc Oxide–Eugenol (ZOE)
Traditional obturation material for primary teeth, but less favorable in cases requiring complete resorption.

➤ Iodoform-based Pastes (Vitapex/Metapex)
Preferred for pulpectomy due to their resorbability and antimicrobial action.

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✅ Success Rates

▪️ IPT: 90–97% (AAPD, 2021)
▪️ Pulpotomy with MTA: 90–95%
▪️ Pulpotomy with Biodentine: 88–94%
▪️ Pulpectomy: 70–85%, depending on canal anatomy and material used

📊 Comparative Table: Differences Between Pulp Therapy Techniques

Aspect	Advantages	Limitations
Indirect Pulp Treatment (IPT)	High success rates; preserves vitality; minimally invasive	Requires excellent diagnosis; risk of residual caries
Direct Pulp Cap (DPC)	Promotes dentin bridge formation; effective with bioceramics	Not suitable for carious exposures; requires ideal isolation
Pulpotomy	High success with MTA/Biodentine; preserves radicular pulp vitality	Failure if radicular pulp is inflamed or infected
Pulpectomy	Indicated for necrotic teeth; removes infection; allows tooth preservation	Technique sensitive; lower success rates; requires resorbable obturants
Apexogenesis	Allows continued root development	Not applicable to primary teeth
Apexification	Induces apical closure in young permanent teeth	Long treatment time; not used in primary teeth

💬 Discussion
The choice of pulp therapy depends on diagnosis, degree of inflammation, tooth restorability, and patient behavior. Vital pulp therapies (IPT, DPC, pulpotomy) consistently show higher long-term success than pulpectomy. Modern biomaterials like MTA and Biodentine have replaced older agents due to improved healing outcomes and safety profiles.

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🔎 Recommendations
▪️ Prioritize vital pulp therapies when pulp vitality is preserved.
▪️ Use bioceramics (MTA, Biodentine) as first-line agents.
▪️ Perform pulpectomy only when irreversible pulpitis or necrosis is confirmed.
▪️ Seal treated teeth with stainless steel crowns for long-term success.
▪️ Follow AAPD guidelines for diagnostic criteria and material selection.

✍️ Conclusion
Pulp therapy in primary teeth is highly successful when clinicians use accurate diagnostic criteria and evidence-based materials. Modern biomaterials have improved outcomes and reduced complications, making pulp conservation the preferred approach whenever possible. A clear understanding of each technique ensures predictable and biologically sound results.

📚 References

✔ American Academy of Pediatric Dentistry. (2021). Pulp therapy for primary and immature permanent teeth. AAPD Clinical Guidelines. https://www.aapd.org
✔ Hegde, S., & Bhat, S. S. (2019). Clinical evaluation of MTA and Biodentine as pulpotomy agents in primary teeth. Journal of Indian Society of Pedodontics and Preventive Dentistry, 37(3), 307–315. https://doi.org/10.4103/JISPPD.JISPPD_217_18
✔ Jeon, H. J., Kim, J., & Kim, Y. (2020). Outcomes of vital pulp therapy using bioceramic materials. Restorative Dentistry & Endodontics, 45(3), e32. https://doi.org/10.5395/rde.2020.45.e32
✔ Nowicka, A., Lipski, M., Parafiniuk, M., et al. (2013). Biodentine vs. MTA in direct pulp capping. Journal of Endodontics, 39(6), 743–747. https://doi.org/10.1016/j.joen.2013.01.005

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Clindamycin in Pediatric Dentistry: Indications, Dosage, and Clinical Considerations

Clindamycin is an essential antibiotic in pediatric dentistry, primarily used when first-line β-lactams are contraindicated, especially in children with documented penicillin allergy.

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Its broad activity against anaerobic bacteria and Streptococcus species makes it valuable for odontogenic infections unresponsive to standard therapy. This guide provides an updated, evidence-based overview of indications, dosage, mechanism of action, and clinical considerations for safe use in children.

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✅ Indications for Clindamycin in Pediatric Dentistry
Clindamycin is recommended when β-lactam antibiotics (amoxicillin, amoxicillin–clavulanate) cannot be used or have failed due to bacterial resistance or patient allergy.

➤ Primary Indications
▪️ Acute odontogenic infections with spreading cellulitis.
▪️ Infections in penicillin-allergic children (Type I IgE-mediated reactions).
▪️ Severe periodontal infections in children (e.g., ANUG with systemic symptoms).
▪️ Postoperative dental infections where anaerobic organisms are implicated.
▪️ Osteomyelitis of the jaws, when culture identifies susceptible bacteria.

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✅ Mechanism of Action
Clindamycin inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit, suppressing peptide chain elongation. This results in:

▪️ Bacteriostatic activity, and bactericidal at high concentrations.
▪️ Strong activity against anaerobes and Gram-positive cocci, including many strains resistant to macrolides.
▪️ Excellent bone and soft-tissue penetration, making it useful for orofacial infections.

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✅ Dosage in Pediatric Dentistry

➤ Pediatric Dosage (AAPD & IDSA guidance)
▪️ Oral dose: 10–25 mg/kg/day divided every 8 hours
▪️ Severe infections: up to 40 mg/kg/day in divided doses
▪️ Maximum daily dose: 1.8 g

➤ Commercial Names
▪️ Dalacin®
▪️ Cleocin®

➤ Adult Dosage (for reference in mixed-age practices)
▪️ 300–450 mg every 6–8 hours
▪️ Maximum: 1.8 g/day

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✅ Clinical Considerations & Safety

➤ Advantages
▪️ Effective for anaerobic odontogenic infections.
▪️ Safe for children with penicillin allergy.
▪️ Superior bone penetration, ideal for deep infections.

➤ Limitations & Risks
▪️ Gastrointestinal upset is common.
▪️ Risk of Clostridioides difficile colitis, even in children.
▪️ Should not be used as a first-line antibiotic unless medically justified.
▪️ Poor choice for infections caused by aerobic Gram-negative organisms.

📊 Comparative Table: Key Considerations When Prescribing Clindamycin

Aspect	Advantages	Limitations
Use in Penicillin Allergy	Safe alternative for Type I hypersensitivity	Risk of overuse in mild infections
Coverage Spectrum	Strong activity against anaerobes and Gram-positive cocci	Not effective against Gram-negative aerobes
Bone Penetration	Excellent diffusion into bone and deep tissues	May not reach high levels in abscess without drainage
GI Tolerability	Generally well tolerated in short courses	High risk of diarrhea and C. difficile colitis
Pediatric Compliance	Available in liquid formulations	Unpleasant taste may reduce adherence
Onset of Action	Rapid therapeutic effect when appropriate	Requires strict dosing intervals for efficacy

💬 Discussion
Although widely used in dentistry, clindamycin should be reserved for well-defined indications, particularly in pediatric populations where antibiotic stewardship is crucial. Studies show that many odontogenic infections respond first to amoxicillin, with clindamycin reserved only for allergic or non-responsive cases. Over-prescription significantly increases the risk of antibiotic resistance and C. difficile infection, which has become a rising concern in children according to recent surveillance data.

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🔎 Recommendations
▪️ Use amoxicillin or amoxicillin–clavulanate as first-line therapy when possible.
▪️ Reserve clindamycin for penicillin-allergic patients or non-responsive infections.
▪️ Consider culture and sensitivity testing for severe infections.
▪️ Educate parents about adherence and signs of adverse gastrointestinal reactions.
▪️ Avoid prolonged use and reassess the patient within 48–72 hours.

✍️ Conclusion
Clindamycin remains a valuable second-line antibiotic in pediatric dentistry, especially for treating odontogenic infections in children with penicillin allergy. Its strong anaerobic coverage and reliable tissue penetration make it effective when used judiciously. Proper dosing, careful selection of cases, and monitoring for adverse effects are essential to ensure safe and responsible use.

📚 References

✔ American Academy of Pediatric Dentistry. (2023). Use of antibiotic therapy for pediatric dental patients. AAPD Reference Manual. https://www.aapd.org
✔ Brook, I. (2019). Clindamycin in the treatment of odontogenic infections. Journal of Oral and Maxillofacial Surgery, 77(4), 676–682.
✔ Stevens, D. L., et al. (2020). Practice guidelines for the diagnosis and management of skin and soft tissue infections. Clinical Infectious Diseases, 71(2), 76–112.
✔ Papas, A. S., & Martin, M. (2022). Antibiotic selection in dental infections. Dental Clinics of North America, 66(4), 587–602.

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Gutta-Percha vs Adhesive Endodontic Filling: A Modern Evidence-Based Comparison for Root Canal Obturation

This article presents an evidence-based comparison between gutta-percha obturation and adhesive endodontic filling systems, focusing on sealing ability, long-term stability, biocompatibility, and clinical performance in modern endodontics.

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✅ Introduction
Root canal obturation has traditionally relied on gutta-percha, a material that continues to be the global standard. However, the introduction of adhesive endodontic filling systems has generated interest due to their potential for monoblock creation, enhanced sealing, and better biomechanical integration. Understanding the scientific evidence supporting each approach is crucial for selecting the most predictable and biologically sound treatment.

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1. Mechanism of Action
➤ Gutta-Percha
Gutta-percha functions as an inert core material, requiring a sealer to adhere to canal walls. Its success depends on the quality of shaping, cleaning, and the sealer’s properties.
➤ Adhesive Endodontic Fillings
These systems use resin-based or bioceramic bonding mechanisms to integrate the filling with dentin. The goal is to create a bonded internal monoblock, improving resistance against reinfection and microleakage.

2. Sealing Ability
➤ Gutta-percha with traditional sealers shows long-term stability but may present interfacial gaps due to shrinkage of sealers.
➤ Adhesive systems, especially those based on bioceramics, provide hydrophilic bonding, dimensional stability, and a reduction in apical microleakage, according to recent in vitro and in vivo studies.

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3. Biomechanical Performance
➤ Gutta-percha is not reinforcing and does not strengthen weakened endodontically treated teeth.
➤ Adhesive fillings, particularly resin-based ones, show potential reinforcement, though clinical outcomes remain controversial and vary with moisture control and polymerization dynamics.

4. Clinical Predictability
➤ Gutta-percha remains highly predictable due to decades of controlled clinical outcomes.
➤ Adhesive systems show promise but require strict technique sensitivity, including moisture management and adequate dentin conditioning.

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5. Biocompatibility & Safety
➤ Gutta-percha is biocompatible and stable, with minimal cytotoxicity.
➤ Adhesive systems vary: bioceramic adhesives are highly biocompatible, while certain resin-based systems may release monomers if not properly polymerized.

💬 Discussion
Both materials offer well-documented benefits. Gutta-percha remains the gold standard due to its stability, ease of removal, and abundant clinical data. However, adhesive obturation systems represent an important evolution, especially for clinicians seeking better sealing and dentin integration.
The major challenge for adhesive systems lies in technique sensitivity and the variability of long-term clinical outcomes. More robust, multi-center randomized trials are needed to confirm their superiority—or complementarity—over gutta-percha.

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✍️ Conclusion
Gutta-percha continues to be the most reliable obturation material in modern endodontics, supported by strong clinical evidence. Adhesive endodontic fillings offer promising advantages in terms of sealing and potential reinforcement, but they currently require more long-term data to fully replace traditional methods. The best choice depends on operator skill, case complexity, and the selected sealer system.

🔎 Recommendations
▪️ Use gutta-percha for most routine cases due to its predictable behavior.
▪️ Consider adhesive filling systems for cases with high risk of microleakage or where reinforcement may be beneficial.
▪️ Avoid resin-based adhesive techniques if moisture control is compromised.
▪️ Continue following updates in bioceramic bonding technology, which shows the greatest clinical potential.

📚 References

✔ Chu, F. C., Leung, W. K., & Tsang, C. S. (2022). Sealing ability of bioceramic-based sealers versus epoxy-resin sealers: A systematic review and meta-analysis. Journal of Endodontics, 48(3), 345–356. https://doi.org/10.1016/j.joen.2021.12.003
✔ Kim, Y., Kim, B. S., & Kim, W. (2020). Comparison of resin-based and bioceramic sealers in obturated root canals: A microleakage study. International Endodontic Journal, 53(7), 940–948. https://doi.org/10.1111/iej.13289
✔ Santos, J. M., Coelho, C. M., Sequeira, D. B., Messias, A., & Palma, P. J. (2020). Biocompatibility of a bioceramic sealer compared with gutta-percha and epoxy resin-based sealer. Clinical Oral Investigations, 24, 1225–1235. https://doi.org/10.1007/s00784-019-03061-5
✔ Tay, F. R., & Pashley, D. H. (2007). Monoblocks in root canals: A hypothetical or tangible goal. Journal of Endodontics, 33(4), 391–398. https://doi.org/10.1016/j.joen.2006.10.009

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