Scholarlink

Aim <p>To comparatively evaluate stress distribution in the peri-implant bone in three-dimensional finite element (3D FE) models of titanium implants with different crowns—Metal Ceramic, Zirconia, Poly Ether Ether Ketone (PEEK) retained by three methods—screw, cement, cement-screw under functional load.</p> Settings and Design <p>An implant crown can be retained by screw, cement or a combination of the two—cement-screw. Materials for fabricating implant restorations vary which distribute stress differently in the peri-implant bone.</p> Materials and Methods <p>Nine 3D FE models depicting the restoration-implant-bone complex in the mandibular premolar region were constructed using CAD Solidworks software. The Altair pre-processor was used for model meshing. Young’s modulus and Poisson’s ratio were allotted to each material. Occlusal loading (100N) in vertical and oblique (30°) directions was performed on the 3D FE models and von Mises stresses generated in the peri-implant bone were visualised, evaluated according to colour code, numerically recorded, assessed and compared.</p> Results <p>For the vertical and inclined force models, stress distribution in peri-implant bone was higher in all screw retained models and lower for all cement retained and cement-screw retained models. Peri-implant bone stresses were comparable for cement retained and cement-screw retained prosthesis.</p> Conclusion <p>Any of the nine combinations of crown materials—Metal Ceramic, Zirconia, PEEK and retention methods—screw retained, cement retained, cement-screw retained can be used clinically as they have stress varying for less than 10% across all models.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Stress Distribution in Peri-implant Bone of Implants Restored with Screw, Cement, and Cement-Screw Retained Crowns Using Three Crown Materials: a Three-dimensional Finite Element Analysis

  • 期刊论文

  • 发表日期：

    2025年5月17日

查看全文
  • Ankita K. Pasad,
  • Jyoti B. Nadgere,
  • Janani V. Iyer

摘要

Aim

To comparatively evaluate stress distribution in the peri-implant bone in three-dimensional finite element (3D FE) models of titanium implants with different crowns—Metal Ceramic, Zirconia, Poly Ether Ether Ketone (PEEK) retained by three methods—screw, cement, cement-screw under functional load.

Settings and Design

An implant crown can be retained by screw, cement or a combination of the two—cement-screw. Materials for fabricating implant restorations vary which distribute stress differently in the peri-implant bone.

Materials and Methods

Nine 3D FE models depicting the restoration-implant-bone complex in the mandibular premolar region were constructed using CAD Solidworks software. The Altair pre-processor was used for model meshing. Young’s modulus and Poisson’s ratio were allotted to each material. Occlusal loading (100N) in vertical and oblique (30°) directions was performed on the 3D FE models and von Mises stresses generated in the peri-implant bone were visualised, evaluated according to colour code, numerically recorded, assessed and compared.

Results

For the vertical and inclined force models, stress distribution in peri-implant bone was higher in all screw retained models and lower for all cement retained and cement-screw retained models. Peri-implant bone stresses were comparable for cement retained and cement-screw retained prosthesis.

Conclusion

Any of the nine combinations of crown materials—Metal Ceramic, Zirconia, PEEK and retention methods—screw retained, cement retained, cement-screw retained can be used clinically as they have stress varying for less than 10% across all models.