The biomechanical function of periodontal ligament fibres in orthodontic tooth movement.

The biomechanical function of periodontal ligament fibres in orthodontic tooth movement.
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正畸牙齿运动中牙周韧带纤维的生物力学功能。

DOI:
10.1371/journal.pone.0102387
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Gröning F
Gröning F
中科院分区:
综合性期刊3区
文献类型:
--
作者:
McCormack SW;Witzel U;Watson PJ;Fagan MJ;Gröning F

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正畸牙齿移动的发生是由于牙槽骨的吸收和形成,由于施加的负载,但刺激负责触发正畸牙齿移动仍然是争论的主题。牙周膜(PDL)在牙周病的发生发展中起着重要的作用。然而,牙周膜在正畸牙齿移动中的力学功能还没有得到很好的理解,因为迄今为止大多数牙周膜的力学模型都忽略了牙周膜的纤维结构。在这项研究中,我们使用有限元(FE)分析,调查牙槽骨的应变,由于咬合和正畸负荷时,PDL建模为纤维结构相比,建模PDL作为一层固体材料。结果表明,仅张力性质的纤维基本上悬浮在牙槽中的牙齿和它们的列入有限元模型中产生显着差异的大小和分布的应变在周围的骨骼。结果表明,PDL纤维有一个非常重要的作用,在牙齿和牙槽骨之间的负荷转移,并应考虑在有限元研究正畸牙齿移动的生物力学。
Orthodontic tooth movement occurs as a result of resorption and formation of the alveolar bone due to an applied load, but the stimulus responsible for triggering orthodontic tooth movement remains the subject of debate. It has been suggested that the periodontal ligament (PDL) plays a key role. However, the mechanical function of the PDL in orthodontic tooth movement is not well understood as most mechanical models of the PDL to date have ignored the fibrous structure of the PDL. In this study we use finite element (FE) analysis to investigate the strains in the alveolar bone due to occlusal and orthodontic loads when PDL is modelled as a fibrous structure as compared to modelling PDL as a layer of solid material. The results show that the tension-only nature of the fibres essentially suspends the tooth in the tooth socket and their inclusion in FE models makes a significant difference to both the magnitude and distribution of strains produced in the surrounding bone. The results indicate that the PDL fibres have a very important role in load transfer between the teeth and alveolar bone and should be considered in FE studies investigating the biomechanics of orthodontic tooth movement.
DOI: 10.1007/bf02406127
发表时间: 1984-01-01
影响因子: 4.2
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期刊: Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie
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DOI: 10.1016/j.jbiomech.2011.01.008
发表时间: 2011-04-29
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DOI: 10.1002/ar.22455
发表时间: 2012-05-01
影响因子: 2
作者:
Groening, Flora;Fagan, Michael;O'Higgins, Paul
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