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Purpose <p>To characterize hardness and fracture toughness of ceramic CAD/CAM materials with different composition (IPS e.max CAD and MAZIC Duro) and thicknesses (1mm and 1.5mm).</p> Materials and methods <p>Blocks of CAD/CAM esthetic restorative materials (IPS e. max CAD "EC" and MAZIC Duro "MD"), forty discs were fabricated with dimensions of 10&#xa0;mm × 1&#xa0;mm and 10&#xa0;mm × 1.5&#xa0;mm. All discs were prepared using a precision cutting machine. Discs were then subjected to hardness, fracture toughness tests.</p> Results <p>Data were analyzed using independent t-tests and Two-way ANOVA (p &lt; 0.05). For hardness test, at 1 mm and 1.5mm thicknesses, MAZIC Duro (MD) recorded a not statistically significant higher mean value of hardness (459.836 ± 20.549 HV) (468.818 ± 17.574 HV) compared to IPS e.max CAD (EC) (456.596 ± 38.102 HV) (463.346 ± 11.399 HV) (p = 0.816 and p = 0.420, respectively). For fracture toughness test, at 1 mm thickness, MAZIC Duro (MD) recorded a highly statistically significant higher mean value of fracture toughness (5.360 ± 0.133 MPa) compared to IPS e.max CAD (EC) (4.744 ± 0.151 MPa) (p &lt; 0.001). While at 1.5 mm thickness, MAZIC Duro (MD) recorded a not statistically significant higher mean value of fracture toughness (5.291 ± .089 MPa) compared to IPS e.max CAD (EC) (5.285 ± 0.330 MPa) (p = 0.956).</p> Conclusion <p>MAZIC Duro (MD) showed slightly higher hardness than IPS e.max CAD (EC) at both 1 mm and 1.5 mm thicknesses, but the difference was not statistically significant. For fracture toughness, MD was highly significant at 1 mm thickness, while at 1.5 mm, both materials performed similarly with no significant difference.</p>

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Surface and fracture properties of lithium disilicate and resin-Matrix CAD/CAM ceramics

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月25日

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  • Ayat G. Montaser,
  • Sara Tamimi,
  • Shimaa A. El Saeed,
  • Ahmed D. Abogabal,
  • Ahmed Y. Allam,
  • Suad M. Hassan,
  • Sally N. El Adawy

摘要

Purpose

To characterize hardness and fracture toughness of ceramic CAD/CAM materials with different composition (IPS e.max CAD and MAZIC Duro) and thicknesses (1mm and 1.5mm).

Materials and methods

Blocks of CAD/CAM esthetic restorative materials (IPS e. max CAD "EC" and MAZIC Duro "MD"), forty discs were fabricated with dimensions of 10 mm × 1 mm and 10 mm × 1.5 mm. All discs were prepared using a precision cutting machine. Discs were then subjected to hardness, fracture toughness tests.

Results

Data were analyzed using independent t-tests and Two-way ANOVA (p < 0.05). For hardness test, at 1 mm and 1.5mm thicknesses, MAZIC Duro (MD) recorded a not statistically significant higher mean value of hardness (459.836 ± 20.549 HV) (468.818 ± 17.574 HV) compared to IPS e.max CAD (EC) (456.596 ± 38.102 HV) (463.346 ± 11.399 HV) (p = 0.816 and p = 0.420, respectively). For fracture toughness test, at 1 mm thickness, MAZIC Duro (MD) recorded a highly statistically significant higher mean value of fracture toughness (5.360 ± 0.133 MPa) compared to IPS e.max CAD (EC) (4.744 ± 0.151 MPa) (p < 0.001). While at 1.5 mm thickness, MAZIC Duro (MD) recorded a not statistically significant higher mean value of fracture toughness (5.291 ± .089 MPa) compared to IPS e.max CAD (EC) (5.285 ± 0.330 MPa) (p = 0.956).

Conclusion

MAZIC Duro (MD) showed slightly higher hardness than IPS e.max CAD (EC) at both 1 mm and 1.5 mm thicknesses, but the difference was not statistically significant. For fracture toughness, MD was highly significant at 1 mm thickness, while at 1.5 mm, both materials performed similarly with no significant difference.