A 3-Dimensional finite element analysis of patient-specific implant (with strut abutments) interface on stress concentration on the implant and surrounding bone in bilateral maxillary deformities.

National journal of maxillofacial surgery Pub Date : 2024-05-01 Epub Date: 2024-07-24 DOI:10.4103/njms.njms_155_23
Abhay N Datarkar, Arwa F Pardiwala, Priyanka Relan, Surendra Daware, Vandana Gadve, Archana Deshpande, Ashlesha Ghormade
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Abstract

Purpose: To determine the efficacy and longevity of patient-specific implants (PSIs) with strut abutment design to rehabilitate bilateral maxillectomy defect.

Materials and methods: Finite Element Analysis was performed on a PSI with strut abutments to repair a patient's bilateral maxillectomy defect due to COVID associated mucormycosis.

Results: The von Mises stress recorded was maximum in the zygomaticomaxillary buttress region, and displacement values were noted to be highest in the posterior-most strut, although both parameters were within acceptable limits, which is favorable.

Conclusion: The authors draw the conclusion that a PSI with strut abutments is a workable therapeutic modality for patients with these kinds of abnormalities based on this information.

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对患者特定种植体(带支撑基台)界面进行三维有限元分析,分析双侧上颌畸形患者种植体和周围骨质的应力集中情况。
目的:确定患者特异性种植体(PSI)与支台基设计在修复双侧上颌骨缺损方面的功效和寿命:对带有支撑基台的PSI进行有限元分析,以修复一名患者因COVID相关粘液瘤病导致的双侧上颌骨切除缺损:结果:记录的冯米塞斯应力在颧颌面基台区域最大,位移值在最后部的支杆最大,尽管这两个参数都在可接受的范围内,但这是有利的:作者根据这些信息得出结论,对于这类异常的患者来说,带有支撑基台的 PSI 是一种可行的治疗方式。
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