Fredrick Williams, Afiya Eram, Mohammad Zuber, G Srikanth, Anupam Singh, Rajendra Prasad, S M Abdul Khader, A B V Barboza
{"title":"用有限元方法评估单侧唇腭裂上颌复合体在模拟咬合载荷下的应力。","authors":"Fredrick Williams, Afiya Eram, Mohammad Zuber, G Srikanth, Anupam Singh, Rajendra Prasad, S M Abdul Khader, A B V Barboza","doi":"10.1007/s12663-025-02458-8","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>In individuals with a unilateral cleft lip and palate, there routinely exists an abnormality of the facial skeleton in all three planes <b>(</b>transverse, sagittal and coronal<b>)</b>. Skeletal and facial asymmetry is pronounced in the anterior part of the maxilla with a smaller maxillary width and height on the cleft side. As a mechanical stimulant, occlusal forces and the resulting stress and strain distribution within the skeletal components lead to strain-induced bone remodeling. This study was done to observe the stress distribution pattern and displacement within the maxillary complex in a complete unilateral cleft lip and palate individual when subjected to simulated occlusal forces, using a three-dimensional finite element analysis.</p><p><strong>Material and methods: </strong>A three-dimensional finite element model of the maxillary complex of a unilateral cleft lip and palate individual was developed from sequential computed tomography scan images processed at 1-mm intervals. ANSYS™ 14.0 and MIMICS™ software were used for the same. Masseter forces of 300 N were applied at the zygomatic arch bilaterally, and occlusal loads of 100 N were applied vertically onto the framework surface at different locations to simulate occlusal loading. The displacement and von Mises stresses in different planes were studied on different nodes at various anatomical points within the maxillary complex.</p><p><strong>Results: </strong>The unilateral cleft lip and palate led to a non-uniform, asymmetric stress distribution pattern within the maxillary complex: intensified on the non-cleft side and weakened on the cleft side. An asymmetric displacement pattern was noted between the cleft and non-cleft sides.</p><p><strong>Conclusions: </strong>The results implied that an individual born with a complete unilateral cleft lip and palate would be expected to have an asymmetric facial development between the non-cleft and cleft sides as a result of an asymmetric occlusal loading pattern.</p>","PeriodicalId":47495,"journal":{"name":"Journal of Maxillofacial & Oral Surgery","volume":"24 3","pages":"730-739"},"PeriodicalIF":0.6000,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12122405/pdf/","citationCount":"0","resultStr":"{\"title\":\"Evaluation of Stress in the Maxillary Complex of a Unilateral Cleft Lip and Palate on Simulated Occlusal Loading Using Finite Element Analysis.\",\"authors\":\"Fredrick Williams, Afiya Eram, Mohammad Zuber, G Srikanth, Anupam Singh, Rajendra Prasad, S M Abdul Khader, A B V Barboza\",\"doi\":\"10.1007/s12663-025-02458-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>In individuals with a unilateral cleft lip and palate, there routinely exists an abnormality of the facial skeleton in all three planes <b>(</b>transverse, sagittal and coronal<b>)</b>. Skeletal and facial asymmetry is pronounced in the anterior part of the maxilla with a smaller maxillary width and height on the cleft side. As a mechanical stimulant, occlusal forces and the resulting stress and strain distribution within the skeletal components lead to strain-induced bone remodeling. This study was done to observe the stress distribution pattern and displacement within the maxillary complex in a complete unilateral cleft lip and palate individual when subjected to simulated occlusal forces, using a three-dimensional finite element analysis.</p><p><strong>Material and methods: </strong>A three-dimensional finite element model of the maxillary complex of a unilateral cleft lip and palate individual was developed from sequential computed tomography scan images processed at 1-mm intervals. ANSYS™ 14.0 and MIMICS™ software were used for the same. Masseter forces of 300 N were applied at the zygomatic arch bilaterally, and occlusal loads of 100 N were applied vertically onto the framework surface at different locations to simulate occlusal loading. The displacement and von Mises stresses in different planes were studied on different nodes at various anatomical points within the maxillary complex.</p><p><strong>Results: </strong>The unilateral cleft lip and palate led to a non-uniform, asymmetric stress distribution pattern within the maxillary complex: intensified on the non-cleft side and weakened on the cleft side. An asymmetric displacement pattern was noted between the cleft and non-cleft sides.</p><p><strong>Conclusions: </strong>The results implied that an individual born with a complete unilateral cleft lip and palate would be expected to have an asymmetric facial development between the non-cleft and cleft sides as a result of an asymmetric occlusal loading pattern.</p>\",\"PeriodicalId\":47495,\"journal\":{\"name\":\"Journal of Maxillofacial & Oral Surgery\",\"volume\":\"24 3\",\"pages\":\"730-739\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2025-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12122405/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Maxillofacial & Oral Surgery\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1007/s12663-025-02458-8\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/2/12 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q4\",\"JCRName\":\"DENTISTRY, ORAL SURGERY & MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Maxillofacial & Oral Surgery","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s12663-025-02458-8","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/12 0:00:00","PubModel":"Epub","JCR":"Q4","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
Evaluation of Stress in the Maxillary Complex of a Unilateral Cleft Lip and Palate on Simulated Occlusal Loading Using Finite Element Analysis.
Background: In individuals with a unilateral cleft lip and palate, there routinely exists an abnormality of the facial skeleton in all three planes (transverse, sagittal and coronal). Skeletal and facial asymmetry is pronounced in the anterior part of the maxilla with a smaller maxillary width and height on the cleft side. As a mechanical stimulant, occlusal forces and the resulting stress and strain distribution within the skeletal components lead to strain-induced bone remodeling. This study was done to observe the stress distribution pattern and displacement within the maxillary complex in a complete unilateral cleft lip and palate individual when subjected to simulated occlusal forces, using a three-dimensional finite element analysis.
Material and methods: A three-dimensional finite element model of the maxillary complex of a unilateral cleft lip and palate individual was developed from sequential computed tomography scan images processed at 1-mm intervals. ANSYS™ 14.0 and MIMICS™ software were used for the same. Masseter forces of 300 N were applied at the zygomatic arch bilaterally, and occlusal loads of 100 N were applied vertically onto the framework surface at different locations to simulate occlusal loading. The displacement and von Mises stresses in different planes were studied on different nodes at various anatomical points within the maxillary complex.
Results: The unilateral cleft lip and palate led to a non-uniform, asymmetric stress distribution pattern within the maxillary complex: intensified on the non-cleft side and weakened on the cleft side. An asymmetric displacement pattern was noted between the cleft and non-cleft sides.
Conclusions: The results implied that an individual born with a complete unilateral cleft lip and palate would be expected to have an asymmetric facial development between the non-cleft and cleft sides as a result of an asymmetric occlusal loading pattern.
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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