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Objectives <p>This study aimed to assess the microtensile bond strength of a chlorhexidine-containing dentin bonding agent compared with a standard adhesive, and to investigate its clinical success in Class II cavities in primary teeth, with a 12-month follow-up.</p> Materials and methods <p>The study consisted of two parts: a prospective, single-blind, split-mouth randomized controlled clinical trial and an in vitro laboratory evaluation. Ethical approval were obtained for the both parts of the study. Forty pediatric patients (aged 5–9 years) with primary molars requiring Class II restorations were included in the clinical trial, where bulk-fill restorations bonded with a chlorhexidine-containing adhesive and a standard adhesive were evaluated based on FDI criteria at 3-month intervals for 12 months. he in vitro study examined the microtensile bond strength (µTBS) of immediate and thermally aged specimens prepared with bulk-fill composite materials and adhesives with or without chlorhexidine.The data were analyzed using Mann Whitney U test for in-vivo, ANOVA test followed by Tukey’s post hoc and Chi-square test for in-vitro study (<i>p</i> = 0.05).</p> Results <p>Clinically, both adhesives showed similar success rates (%100) across all FDI evaluation parameters after 12 months (<i>p</i> &gt; 0.05). The chlorhexidine-containing adhesive demonstrated significantly higher microtensile bond strength than the standard adhesive in both immediate and aged samples (<i>p</i> &lt; 0.05).</p> Conclusions <p>The chlorhexidine-containing adhesive showed promising clinical success and improved bond strength compared to the standard adhesive. Longer follow-ups are needed to confirm its long-term durability.“Incorporating chlorhexidine simplifies restorative procedures without compromising performance.</p> Clinical Relevance <p>Chlorhexidine-containing adhesives may improve bond durability and procedural efficiency in pediatric dentistry, offering a practical and effective alternative for restoring primary molars.</p> Trial registration <p>Invivo part of the study was registered in a public trial registry, www.clinicaltrials.gov (#NCT06257108). Registration Date 2nd. May 2024 (Retrospectively registered).</p>

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A prospective randomized clinical trial and an in vitro evaluation of the microtensile bond strength of a chlorhexidine-containing dentin bonding agent and a bulk fill composite material in primary teeth

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月13日

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  • Hülya Altıntop,
  • Hasibe Elif Kuru,
  • Fahinur Ertuğrul,
  • Murat Türkün,
  • Ebru Küçükyılmaz

摘要

Objectives

This study aimed to assess the microtensile bond strength of a chlorhexidine-containing dentin bonding agent compared with a standard adhesive, and to investigate its clinical success in Class II cavities in primary teeth, with a 12-month follow-up.

Materials and methods

The study consisted of two parts: a prospective, single-blind, split-mouth randomized controlled clinical trial and an in vitro laboratory evaluation. Ethical approval were obtained for the both parts of the study. Forty pediatric patients (aged 5–9 years) with primary molars requiring Class II restorations were included in the clinical trial, where bulk-fill restorations bonded with a chlorhexidine-containing adhesive and a standard adhesive were evaluated based on FDI criteria at 3-month intervals for 12 months. he in vitro study examined the microtensile bond strength (µTBS) of immediate and thermally aged specimens prepared with bulk-fill composite materials and adhesives with or without chlorhexidine.The data were analyzed using Mann Whitney U test for in-vivo, ANOVA test followed by Tukey’s post hoc and Chi-square test for in-vitro study (p = 0.05).

Results

Clinically, both adhesives showed similar success rates (%100) across all FDI evaluation parameters after 12 months (p > 0.05). The chlorhexidine-containing adhesive demonstrated significantly higher microtensile bond strength than the standard adhesive in both immediate and aged samples (p < 0.05).

Conclusions

The chlorhexidine-containing adhesive showed promising clinical success and improved bond strength compared to the standard adhesive. Longer follow-ups are needed to confirm its long-term durability.“Incorporating chlorhexidine simplifies restorative procedures without compromising performance.

Clinical Relevance

Chlorhexidine-containing adhesives may improve bond durability and procedural efficiency in pediatric dentistry, offering a practical and effective alternative for restoring primary molars.

Trial registration

Invivo part of the study was registered in a public trial registry, www.clinicaltrials.gov (#NCT06257108). Registration Date 2nd. May 2024 (Retrospectively registered).