{"title":"应用三维有限元分析比较四对四和六对六治疗概念对全口康复应力分布的影响:生物力学研究。","authors":"Aishwarya Pandey, Farhan Durrani, Sanjay Kumar Rai, Nishant Kumar Singh, Preeti Singh, Rati Verma, Jitendra Kumar","doi":"10.4103/jisp.jisp_278_22","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>The current study intended to provide a comparison of biomechanical behaviors of two different treatment concepts for full-mouth rehabilitation with dental implants placed according to the \"All-on-four\" concept and \"All-on-six\" concept with analysis of the stress patterns of the implant support system using three-dimensional finite element analysis (FEA).</p><p><strong>Materials and methods: </strong>The edentulous mandible was treated with two different implant designs. \"All-on-Four\" implant placement concept was used in Model 1 with two central axial implants and two distally tilted implants at 17° and in Model 2, \"All-on-Six\" concept was applied with six vertically placed implants. Individual vertical and horizontal load of 100 N and oblique load of 141 N at 45° was applied to all implants. To evaluate and compare the results in terms of maximum principal stress, we used FEA.</p><p><strong>Results: </strong>All-on-six showed smaller maximum principal stress values on the cortical bone and implants. However, maximum principal stress values obtained on trabecular bone was smaller in the All-on-four design for vertical and horizontal loading conditions.</p><p><strong>Conclusions: </strong>The All-on-six approach showed more favorable biomechanical behavior.</p>","PeriodicalId":15890,"journal":{"name":"Journal of Indian Society of Periodontology","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10159094/pdf/","citationCount":"0","resultStr":"{\"title\":\"Comparison between all-on-four and all-on-six treatment concepts on stress distribution for full-mouth rehabilitation using three-dimensional finite element analysis: A biomechanical study.\",\"authors\":\"Aishwarya Pandey, Farhan Durrani, Sanjay Kumar Rai, Nishant Kumar Singh, Preeti Singh, Rati Verma, Jitendra Kumar\",\"doi\":\"10.4103/jisp.jisp_278_22\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Purpose: </strong>The current study intended to provide a comparison of biomechanical behaviors of two different treatment concepts for full-mouth rehabilitation with dental implants placed according to the \\\"All-on-four\\\" concept and \\\"All-on-six\\\" concept with analysis of the stress patterns of the implant support system using three-dimensional finite element analysis (FEA).</p><p><strong>Materials and methods: </strong>The edentulous mandible was treated with two different implant designs. \\\"All-on-Four\\\" implant placement concept was used in Model 1 with two central axial implants and two distally tilted implants at 17° and in Model 2, \\\"All-on-Six\\\" concept was applied with six vertically placed implants. Individual vertical and horizontal load of 100 N and oblique load of 141 N at 45° was applied to all implants. To evaluate and compare the results in terms of maximum principal stress, we used FEA.</p><p><strong>Results: </strong>All-on-six showed smaller maximum principal stress values on the cortical bone and implants. However, maximum principal stress values obtained on trabecular bone was smaller in the All-on-four design for vertical and horizontal loading conditions.</p><p><strong>Conclusions: </strong>The All-on-six approach showed more favorable biomechanical behavior.</p>\",\"PeriodicalId\":15890,\"journal\":{\"name\":\"Journal of Indian Society of Periodontology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10159094/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Indian Society of Periodontology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4103/jisp.jisp_278_22\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2023/3/4 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"Dentistry\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Indian Society of Periodontology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/jisp.jisp_278_22","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/3/4 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"Dentistry","Score":null,"Total":0}
Comparison between all-on-four and all-on-six treatment concepts on stress distribution for full-mouth rehabilitation using three-dimensional finite element analysis: A biomechanical study.
Purpose: The current study intended to provide a comparison of biomechanical behaviors of two different treatment concepts for full-mouth rehabilitation with dental implants placed according to the "All-on-four" concept and "All-on-six" concept with analysis of the stress patterns of the implant support system using three-dimensional finite element analysis (FEA).
Materials and methods: The edentulous mandible was treated with two different implant designs. "All-on-Four" implant placement concept was used in Model 1 with two central axial implants and two distally tilted implants at 17° and in Model 2, "All-on-Six" concept was applied with six vertically placed implants. Individual vertical and horizontal load of 100 N and oblique load of 141 N at 45° was applied to all implants. To evaluate and compare the results in terms of maximum principal stress, we used FEA.
Results: All-on-six showed smaller maximum principal stress values on the cortical bone and implants. However, maximum principal stress values obtained on trabecular bone was smaller in the All-on-four design for vertical and horizontal loading conditions.
Conclusions: The All-on-six approach showed more favorable biomechanical behavior.
期刊介绍:
The Journal of Indian Society of Periodontology publishes original scientific articles to support practice , education and research in the dental specialty of periodontology and oral implantology. Journal of Indian Society of Periodontology (JISP), is the official publication of the Society and is managed and brought out by the Editor of the society. The journal is published Bimonthly with special issues being brought out for specific occasions. The ISP had a bulletin as its publication for a large number of years and was enhanced as a Journal a few years ago