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.

IF 0.6 Q4 DENTISTRY, ORAL SURGERY & MEDICINE
Journal of Maxillofacial & Oral Surgery Pub Date : 2025-08-01 Epub Date: 2025-05-17 DOI:10.1007/s12663-025-02565-6
Ankita K Pasad, Jyoti B Nadgere, Janani V Iyer
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引用次数: 0

Abstract

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.

螺钉、骨水泥和骨水泥-螺钉保留冠三种冠材修复种植体种植周骨的应力分布:三维有限元分析。
目的:建立三维有限元模型,比较评价不同冠体金属陶瓷、氧化锆、聚醚醚酮(PEEK)三种固定方法(螺钉、水泥、水泥-螺钉)的钛种植体在功能载荷下种植体周围骨的应力分布。设置和设计:种植体冠可通过螺钉、骨水泥或双骨水泥螺钉组合固定。制造种植体修复体的材料各不相同,这使得种植体周围骨的应力分布不同。材料与方法:采用CAD Solidworks软件建立下颌前磨牙区修复体-种植体-骨复合体的9个三维有限元模型。采用Altair预处理器对模型进行网格划分。杨氏模量和泊松比分配给每种材料。在三维有限元模型上进行垂直和倾斜(30°)方向100N的咬合加载,并将种植体周围骨产生的von Mises应力可视化,根据颜色编码进行评估,并进行数字记录、评估和比较。结果:对于垂直力模型和倾斜力模型,所有螺钉保留模型种植体周围骨的应力分布都较高,所有水泥保留模型和水泥-螺钉保留模型的应力分布都较低。骨水泥保留和骨水泥螺钉保留假体的种植体周围骨应力相当。结论:9种冠材组合(金属陶瓷、氧化锆、聚醚醚酮、螺钉保留、水泥保留、水泥-螺钉保留)均可用于临床,在所有模型中应力变化小于10%。
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来源期刊
Journal of Maxillofacial & Oral Surgery
Journal of Maxillofacial & Oral Surgery DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
1.90
自引率
0.00%
发文量
138
期刊介绍: This journal offers comprehensive coverage of new techniques, important developments and innovative ideas in Oral and Maxillofacial Surgery. Practice-applicable articles help develop the methods used to handle dentoalveolar surgery, facial injuries and deformities, TMJ disorders, oral cancer, jaw reconstruction, anesthesia and analgesia. The journal also includes specifics on new instruments, diagnostic equipment’s and modern therapeutic drugs and devices. Journal of Oral and Maxillofacial Surgery is recommended for first or priority subscription by the Dental Section of the Medical Library Association. Specific topics covered recently have included: ? distraction osteogenesis ? synthetic bone substitutes ? fibroblast growth factors ? fetal wound healing ? skull base surgery ? computer-assisted surgery ? vascularized bone grafts Benefits to authorsWe also provide many author benefits, such as free PDFs, a liberal copyright policy, special discounts on Elsevier publications and much more. Please click here for more information on our author services.
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