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<p>This review aimed to investigate the potential of ultrasonic activation of sealers in improving the filling quality of single-cone obturation. A systematic search was conducted across 6 electronic databases. Data extraction and quality assessment were performed. Twenty studies were included, with 11 meeting the criteria for meta-analysis. Meta-analyses revealed lower porosity with ultrasonic activation (UA) compared to non-ultrasonic activation (NA), as demonstrated by micro-CT (MD = −1.21, 95% CI: −1.69 to 0.74, I<sup>2</sup> = 28%) and stereomicroscopy studies (coronal [MD = −0.05, 95% CI: −0.82 to −0.18, I<sup>2</sup> = 0%]; middle [MD = −0.44, 95% CI: −1.56 to 0.68, I<sup>2</sup> = 89%]; apical [MD = −0.50, 95% CI: −0.78 to −0.21, I<sup>2</sup>= 0%]. Confocal laser scanning microscopy analysis showed significantly higher sealer penetration (%) with UA at the apical [SMD = 2.28, 95% CI: 1.17 to 3.40, I<sup>2</sup> = 71%] and middle thirds [SMD = 2.69, 95% CI: 1.16 to 4.22, I<sup>2</sup> = 87%]. However, studies examining other penetration indicators and push-out bond strength yielded inconsistent results. These findings suggest that ultrasonic activation of sealers positively influences filling quality during single-cone obturation, evidenced by decreased porosity. Further research is required to explain the variations in sealer penetration and bond strength. Ultrasonic activation of root canal sealers has emerged as a promising adjunctive technique in root canal filling. This quantitative systematic evaluation study recognizes that ultrasound-activated root canal sealers have demonstrated significant potential to achieve complete obturation in single-cone obturation.</p>

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Effect of ultrasonic activation of endodontic sealers on root canal filling quality during the single-cone obturation procedure: a systematic review and meta-analysis of laboratory-based studies

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月7日

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  • Shuting Feng,
  • Weiqing Zhou,
  • Xiaojun Chu,
  • Shuaimei Xu,
  • Xiongqun Zeng

摘要

This review aimed to investigate the potential of ultrasonic activation of sealers in improving the filling quality of single-cone obturation. A systematic search was conducted across 6 electronic databases. Data extraction and quality assessment were performed. Twenty studies were included, with 11 meeting the criteria for meta-analysis. Meta-analyses revealed lower porosity with ultrasonic activation (UA) compared to non-ultrasonic activation (NA), as demonstrated by micro-CT (MD = −1.21, 95% CI: −1.69 to 0.74, I2 = 28%) and stereomicroscopy studies (coronal [MD = −0.05, 95% CI: −0.82 to −0.18, I2 = 0%]; middle [MD = −0.44, 95% CI: −1.56 to 0.68, I2 = 89%]; apical [MD = −0.50, 95% CI: −0.78 to −0.21, I2= 0%]. Confocal laser scanning microscopy analysis showed significantly higher sealer penetration (%) with UA at the apical [SMD = 2.28, 95% CI: 1.17 to 3.40, I2 = 71%] and middle thirds [SMD = 2.69, 95% CI: 1.16 to 4.22, I2 = 87%]. However, studies examining other penetration indicators and push-out bond strength yielded inconsistent results. These findings suggest that ultrasonic activation of sealers positively influences filling quality during single-cone obturation, evidenced by decreased porosity. Further research is required to explain the variations in sealer penetration and bond strength. Ultrasonic activation of root canal sealers has emerged as a promising adjunctive technique in root canal filling. This quantitative systematic evaluation study recognizes that ultrasound-activated root canal sealers have demonstrated significant potential to achieve complete obturation in single-cone obturation.