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Objectives <p>To investigate whether dentin pre-treatment with bioactive glass F18 suspensions modifies dentin surface characteristics and influences the bond strength of bioceramic and epoxy resin-based endodontic sealers.</p> Material and methods <p>Extracted human root canals were treated with distilled water, PBS or Bioglass F18 suspensions (2.5%, 5%, or 10%). Dentin surface morphology and elemental composition were analyzed by scanning electron microscopy and energy-dispersive X-ray spectroscopy. Bovine dentin specimens were treated with distilled water or 5% F18 and filled with a bioceramic (Bio-C Sealer) or epoxy resin–based sealer (AH Plus) for interfacial and mechanical analyses. The material–dentin interface was evaluated by micro–Fourier transform infrared spectroscopy after PBS immersion. Push-out and tensile bond strength tests were performed. Statistical analysis was performed using appropriate parametric or non-parametric tests according to data distribution. The level of significance was set at α = 0.05.</p> Results <p>Bioglass F18 promoted the deposition of bioactive material on the dentin surface, with comparable effects observed at 5% and 10% concentrations. All F18 concentrations significantly increased the bond strength of both sealers compared with controls (<i>p</i> &lt; 0.05). In tensile testing, dentin pre-treatment with 5% F18 resulted in significantly higher bond strength (<i>p</i> &lt; 0.05). AH Plus exhibited higher bond strength than Bio-C Sealer in both mechanical tests (<i>p</i> &lt; 0.05).</p> Conclusions <p>Dentin pre-treatment with Bioglass F18 enhanced dentin bioactivity and improved the sealer–dentin adhesion for both Bio-C Sealer and AH Plus. The effects were concentration-dependent across different outcomes, with 5% F18 showing favorable performance in tensile bond strength and comparable behavior to 10% F18 in push-out testing.</p> Clinical relevance <p>Dentin pre-treatment with Bioglass F18 may improve sealer–dentin interfacial performance under in vitro conditions and could represent a potential adjunctive approach in root canal sealing strategies, pending further long-term and in vivo investigations.</p>

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Effect of dentin pre-treatment with Bioglass F18 suspensions on surface characteristics and bond strength of endodontic sealers

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月24日

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  • Marcela de Come Ramos,
  • Pedro Henrique Fiorin de Souza,
  • Fernanda Ferrari Esteves Torres,
  • Marina Trevelin Souza,
  • Edgar Dutra Zanotto,
  • Airton Oliveira Santos-Junior,
  • Juliane Maria Guerreiro-Tanomaru,
  • Mario Tanomaru-Filho

摘要

Objectives

To investigate whether dentin pre-treatment with bioactive glass F18 suspensions modifies dentin surface characteristics and influences the bond strength of bioceramic and epoxy resin-based endodontic sealers.

Material and methods

Extracted human root canals were treated with distilled water, PBS or Bioglass F18 suspensions (2.5%, 5%, or 10%). Dentin surface morphology and elemental composition were analyzed by scanning electron microscopy and energy-dispersive X-ray spectroscopy. Bovine dentin specimens were treated with distilled water or 5% F18 and filled with a bioceramic (Bio-C Sealer) or epoxy resin–based sealer (AH Plus) for interfacial and mechanical analyses. The material–dentin interface was evaluated by micro–Fourier transform infrared spectroscopy after PBS immersion. Push-out and tensile bond strength tests were performed. Statistical analysis was performed using appropriate parametric or non-parametric tests according to data distribution. The level of significance was set at α = 0.05.

Results

Bioglass F18 promoted the deposition of bioactive material on the dentin surface, with comparable effects observed at 5% and 10% concentrations. All F18 concentrations significantly increased the bond strength of both sealers compared with controls (p < 0.05). In tensile testing, dentin pre-treatment with 5% F18 resulted in significantly higher bond strength (p < 0.05). AH Plus exhibited higher bond strength than Bio-C Sealer in both mechanical tests (p < 0.05).

Conclusions

Dentin pre-treatment with Bioglass F18 enhanced dentin bioactivity and improved the sealer–dentin adhesion for both Bio-C Sealer and AH Plus. The effects were concentration-dependent across different outcomes, with 5% F18 showing favorable performance in tensile bond strength and comparable behavior to 10% F18 in push-out testing.

Clinical relevance

Dentin pre-treatment with Bioglass F18 may improve sealer–dentin interfacial performance under in vitro conditions and could represent a potential adjunctive approach in root canal sealing strategies, pending further long-term and in vivo investigations.