不同固位技術(shù)修復單側(cè)上頜骨缺損的生物力學研究
發(fā)布時間:2018-07-23 17:36
【摘要】:目的采用三維有限元分析方法研究卡環(huán)、附著體以及顴種植體3種不同固位技術(shù)對上頜骨單側(cè)缺損修復的生物力學影響。方法利用醫(yī)學圖像處理軟件Mimics重建單側(cè)缺損上頜骨模型,采用鏡像技術(shù)生成修復體模型,并建立使用不同固位技術(shù)修復的上頜骨有限元模型,模擬口腔咬合狀態(tài)下上頜骨受力狀態(tài)。結(jié)果采用顴種植體固位修復的上頜骨健側(cè)及修復側(cè)上腭應力最大,分別為7.399、4.864 MPa;而且采用顴種植固位使得健側(cè)及修復側(cè)上頜骨應力最小,分別為10.46和10.86 MPa;顴種植體自身應力也最小,為15.25 MPa。結(jié)論不同固位技術(shù)修復對單側(cè)上頜骨缺損修復效果影響較大。卡環(huán)固位及附著體固位由于帶有支架可用于分擔作用上腭的力,顴種植體固位可通過傳遞力至顴骨,故可分擔作用于上頜骨的力。
[Abstract]:Objective to study the biomechanical effects of clasp attachment and zygomatic implants on the repair of unilateral maxillary defects by three dimensional finite element analysis. Methods the maxillary model of unilateral defect was reconstructed by medical image processing software Mimics, and the reconstruction model was created by mirror image technique, and the finite element model of maxilla was established with different retention techniques. Simulation of oral occlusal state of maxillary stress state. Results the maxillary stress in the healthy side and the repaired side of the maxilla was the highest, which was 7.399m 4.864 MPa, respectively, and the stress of the healthy side and the repaired side was minimized by using the zygomatic implant retainer. The stress of zygomatic implants was the smallest, 15.25 MPa, and 10.46 MPa and 10.86 MPa, respectively. Conclusion the repair of unilateral maxillary defects with different retentive techniques has a great effect on the repair of unilateral maxillary defects. Because the clamping retainer and attachment retainer can be used to share the force acting on the palate, the zygomatic implant retainer can transfer the force to the zygomatic bone, so it can share the force acting on the maxillary bone.
【作者單位】: 北京航空航天大學生物與醫(yī)學工程學院 生物力學與力生物學教育部重點實驗室;
【基金】:國家自然科學基金資助項目(11202017) 教育部博士點新教師基金項目(20121102120039) 教育部新世紀優(yōu)秀人才支持計劃項目(NCET-12-0024) 北京市自然科學基金項目(7133245)
【分類號】:R318.01
本文編號:2140139
[Abstract]:Objective to study the biomechanical effects of clasp attachment and zygomatic implants on the repair of unilateral maxillary defects by three dimensional finite element analysis. Methods the maxillary model of unilateral defect was reconstructed by medical image processing software Mimics, and the reconstruction model was created by mirror image technique, and the finite element model of maxilla was established with different retention techniques. Simulation of oral occlusal state of maxillary stress state. Results the maxillary stress in the healthy side and the repaired side of the maxilla was the highest, which was 7.399m 4.864 MPa, respectively, and the stress of the healthy side and the repaired side was minimized by using the zygomatic implant retainer. The stress of zygomatic implants was the smallest, 15.25 MPa, and 10.46 MPa and 10.86 MPa, respectively. Conclusion the repair of unilateral maxillary defects with different retentive techniques has a great effect on the repair of unilateral maxillary defects. Because the clamping retainer and attachment retainer can be used to share the force acting on the palate, the zygomatic implant retainer can transfer the force to the zygomatic bone, so it can share the force acting on the maxillary bone.
【作者單位】: 北京航空航天大學生物與醫(yī)學工程學院 生物力學與力生物學教育部重點實驗室;
【基金】:國家自然科學基金資助項目(11202017) 教育部博士點新教師基金項目(20121102120039) 教育部新世紀優(yōu)秀人才支持計劃項目(NCET-12-0024) 北京市自然科學基金項目(7133245)
【分類號】:R318.01
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