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Purpose <p>White spot lesions (WSLs) are popular downsides of orthodontic treatment that could negatively impact oral health and aesthetics. This study aimed to estimate the efficiency of various treatment modalities in enhancing enamel remineralization and improving the surface characteristics of WSLs.</p> Methods <p>Forty sound premolars were divided into five groups; Icon resin, Casein Phosphopeptide-Amorphous Calcium Phosphate (CPP-ACP), Er: YAG laser, Er: YAG &amp; CPP-ACP and Er: YAG &amp; Icon. Artificial WSLs were created by demineralizing agent before treatment. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, microhardness testing and surface roughness analysis were investigated.</p> Results <p>The combination of Er: YAG laser with either Icon resin or CPP-ACP resulted in significantly improved surface morphology characterized by smoother and more homogeneous surfaces compared to individual treatments, while Er: YAG laser alone led to a rough surface. Er: YAG &amp; CPP-ACP had the highest calcium and phosphorus content. The highest mean hardness value was in Er: YAG &amp; CPP-ACP (273.44 ± 0.805) while the lowest was in Er: YAG group (251.76 ± 1.10) (<i>P</i> &lt; 0.05). The highest roughness value was recorded in Er: YAG (0.28881 ± 0.00637), while the lowest was in Icon group (0.23068 ± 0.00248) (<i>P</i> &lt; 0.05).</p> Conclusion <p>The synergistic effect of Er: YAG laser with either Icon resin or CPP-ACP offers a promising approach for the effective management of WSLs.</p>

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Evaluation of icon resin infiltration and CPP-ACP alone or with Er: YAG laser (2940 nm) on surface morphology and hardness of enamel white spot lesions (in vitro study)

  • 期刊论文

  • 发表日期：

    2025年6月19日

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  • Amira Farghal,
  • Mostafa Gheith,
  • Maryam Elmansy,
  • Sara El Moshy

摘要

Purpose

White spot lesions (WSLs) are popular downsides of orthodontic treatment that could negatively impact oral health and aesthetics. This study aimed to estimate the efficiency of various treatment modalities in enhancing enamel remineralization and improving the surface characteristics of WSLs.

Methods

Forty sound premolars were divided into five groups; Icon resin, Casein Phosphopeptide-Amorphous Calcium Phosphate (CPP-ACP), Er: YAG laser, Er: YAG & CPP-ACP and Er: YAG & Icon. Artificial WSLs were created by demineralizing agent before treatment. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, microhardness testing and surface roughness analysis were investigated.

Results

The combination of Er: YAG laser with either Icon resin or CPP-ACP resulted in significantly improved surface morphology characterized by smoother and more homogeneous surfaces compared to individual treatments, while Er: YAG laser alone led to a rough surface. Er: YAG & CPP-ACP had the highest calcium and phosphorus content. The highest mean hardness value was in Er: YAG & CPP-ACP (273.44 ± 0.805) while the lowest was in Er: YAG group (251.76 ± 1.10) (P < 0.05). The highest roughness value was recorded in Er: YAG (0.28881 ± 0.00637), while the lowest was in Icon group (0.23068 ± 0.00248) (P < 0.05).

Conclusion

The synergistic effect of Er: YAG laser with either Icon resin or CPP-ACP offers a promising approach for the effective management of WSLs.