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Background <p>The additively manufactured definitive resins have been proposed for implant-supported restorations nowadays due to its shock absorbing capacity; however, there are limited studies evaluating the effects of different implant-supported crown and abutment materials on stress distribution in implant components and peri-implant bone. This finite element analysis (FEA) aimed to evaluate stress distribution in implant components and the peri-implant bone using different combinations of computer-aided design and computer-aided manufacturing (CAD/CAM) zirconia and three-dimensional (3D) printed ceramic filled hybrid materials for crown and CAD/CAM custom abutment.</p> Methods <p>3D models of a bone-level implant system and titanium base (Ti-base) abutments were created using standard tessellation language (STL) data. A mandibular first molar implant-supported crown was modelled with five different combinations of CAD/CAM zirconia and 3D printed ceramic filled hybrid materials for crown and CAD/CAM custom abutment. A vertical load of 600&#xa0;N and an oblique load of 225&#xa0;N at 45° were applied. Stress distribution in implant components and peri-implant bone were evaluated using von Mises stress (VMS) analysis.</p> Results <p>Under vertical and oblique loading, the overall von Mises stress values across all groups ranged from 102 to 214 MPa in the crown, 45–423 MPa in the CAD/CAM custom abutment, 158–225 MPa in the abutment screw, 242–580 MPa in the Ti-base abutment, 201–461 MPa in the fixture, and 122–204 MPa in the cortical bone. Under both loads, groups CAD/CAM zirconia crown paired with 3D printed ceramic filled hybrid material abutments notably demonstrated reduced stress at the CAD/CAM custom abutment (90% reduction) and Ti-base abutment (27% reduction). The stress distribution in the cortical and cancellous bones remained comparable across all groups under both loads.</p> Conclusions <p>Different combinations of CAD/CAM zirconia and 3D printed ceramic filled hybrid materials for crown and CAD/CAM custom abutment, positively influenced the stress distribution within the abutment complex (custom abutment and Ti-base abutment). However, the stresses in the implant fixture and peri-implant bone showed no notable change.</p>

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Comparative finite element analysis of stress distribution of different implant-supported crown and abutment materials

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月27日

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  • Wan Wan Chan,
  • Muaiyed Mahmoud Buzayan,
  • Eshamsul Sulaiman,
  • Nur Diyana Mohamed Radzi,
  • Mohammed Rafiq Abdul Kadir,
  • Mahmoud Z. Ibrahim

摘要

Background

The additively manufactured definitive resins have been proposed for implant-supported restorations nowadays due to its shock absorbing capacity; however, there are limited studies evaluating the effects of different implant-supported crown and abutment materials on stress distribution in implant components and peri-implant bone. This finite element analysis (FEA) aimed to evaluate stress distribution in implant components and the peri-implant bone using different combinations of computer-aided design and computer-aided manufacturing (CAD/CAM) zirconia and three-dimensional (3D) printed ceramic filled hybrid materials for crown and CAD/CAM custom abutment.

Methods

3D models of a bone-level implant system and titanium base (Ti-base) abutments were created using standard tessellation language (STL) data. A mandibular first molar implant-supported crown was modelled with five different combinations of CAD/CAM zirconia and 3D printed ceramic filled hybrid materials for crown and CAD/CAM custom abutment. A vertical load of 600 N and an oblique load of 225 N at 45° were applied. Stress distribution in implant components and peri-implant bone were evaluated using von Mises stress (VMS) analysis.

Results

Under vertical and oblique loading, the overall von Mises stress values across all groups ranged from 102 to 214 MPa in the crown, 45–423 MPa in the CAD/CAM custom abutment, 158–225 MPa in the abutment screw, 242–580 MPa in the Ti-base abutment, 201–461 MPa in the fixture, and 122–204 MPa in the cortical bone. Under both loads, groups CAD/CAM zirconia crown paired with 3D printed ceramic filled hybrid material abutments notably demonstrated reduced stress at the CAD/CAM custom abutment (90% reduction) and Ti-base abutment (27% reduction). The stress distribution in the cortical and cancellous bones remained comparable across all groups under both loads.

Conclusions

Different combinations of CAD/CAM zirconia and 3D printed ceramic filled hybrid materials for crown and CAD/CAM custom abutment, positively influenced the stress distribution within the abutment complex (custom abutment and Ti-base abutment). However, the stresses in the implant fixture and peri-implant bone showed no notable change.