Yemenoglu Hatice, Beder Melek, Yaylacı Murat, Dizdar Ayberk, Alkurt Murat, Naralan Muhammed Enes, Yaylacı Ecren Uzun, Özdemir Mehmet Emin, Öztürk Şevval, Yeşil Zeynep
Department of Periodontology, Faculty of Dentistry, Recep Tayyip Erdoğan University, Rize, 53020, Turkey.
Faculty of Fisheries, Recep Tayyip Erdoğan University, Rize, 53100, Turkey.
BMC Oral Health. 2025 Jan 19;25(1):99. doi: 10.1186/s12903-025-05468-7.
Zygomatic implants are becoming an ideal treatment approach for implant-supported prosthesis treatment developed for the atrophic maxilla. This study aims to evaluate the amount and distribution of stress in implants and peri-implant bone using different implant-supported prosthesis configurations in Aramany Class I maxillary defects through 3-dimensional finite element analysis.
A 3-dimensional finite element model of the Aramany class I defect was created. Three different implant-supported prostheses were modelled: model 1: 1 zygomatic implant and 3 dental implants, model 2: 1 zygomatic implant and 2 dental implants, and model 3: 2 zygomatic implants. Vertical and horizontal loads of 150 N were applied in 6 different ways to the defected and non-defective areas. Maximum principal stress and von mises stresses in the bone surrounding the implants were evaluated.
When all loading conditions were evaluated with both porcelain layer on Co-Cr framework and acrylic layer on acrylic framework, the highest maximum principal stress value was observed in Model 3. In contrast, the lowest value was observed in Model 1. The highest maximum principal stress occurred when a horizontal load was applied simultaneously to both the defective and non-defective areas. In contrast, the lowest value was observed when a vertical load was applied to the non-defective area. The von Mises stress values were found to be similar across all models when both restoration materials were used.
Based on the results of this study, it can be concluded that increasing the number of implants in the non-defective area reduces the highest stress value while using acrylic as a restoration material slightly increases the stress value.
颧骨种植体正成为为萎缩性上颌骨开发的种植体支持修复治疗的理想方法。本研究旨在通过三维有限元分析，评估在阿拉马尼I类上颌骨缺损中使用不同种植体支持修复体配置时，种植体和种植体周围骨中的应力大小和分布。
创建了阿拉马尼I类缺损的三维有限元模型。模拟了三种不同的种植体支持修复体：模型1：1颗颧骨种植体和3颗牙种植体；模型2：1颗颧骨种植体和2颗牙种植体；模型3：2颗颧骨种植体。以6种不同方式对缺损区和非缺损区施加150N的垂直和水平载荷。评估种植体周围骨中的最大主应力和冯·米塞斯应力。
当对钴铬框架上的瓷层和丙烯酸框架上的丙烯酸层进行所有加载条件评估时，模型3中观察到最高的最大主应力值。相比之下，模型1中观察到最低值。当同时对缺损区和非缺损区施加水平载荷时，出现最高的最大主应力。相比之下，当对非缺损区施加垂直载荷时，观察到最低值。当使用两种修复材料时，所有模型中的冯·米塞斯应力值相似。
基于本研究结果，可以得出结论，在非缺损区增加种植体数量可降低最高应力值，而使用丙烯酸作为修复材料会略微增加应力值。
