Inclusion of periodontal ligament fibres in mandibular finite element models leads to an increase in alveolar bone strains.
Inclusion of periodontal ligament fibres in mandibular finite element models leads to an increase in alveolar bone strains.
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DOI：
10.1371/journal.pone.0188707
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发表时间：
2017
期刊：
影响因子：
3.7
通讯作者：
Gröning F
中科院分区：
文献类型：
--
作者：
McCormack SW;Witzel U;Watson PJ;Fagan MJ;Gröning F
牙槽骨重建对于牙科种植体和正畸治疗的成功至关重要。然而，基本的生物力学机制，特别是牙周膜（PDL）在骨负荷和重建中的功能，还没有很好地理解。牙周膜是一种柔软的纤维结缔组织，将牙根连接到牙槽骨，并在将载荷从牙齿传递到周围骨中起关键作用。然而，由于其结构复杂，体积小，在牙槽内的位置，这是很难在体内研究。有限元分析（FEA）是研究PDL作用的理想工具，然而将PDL包含在FE模型中既复杂又耗时，因此必须考虑如何包含它。本研究的目的是探讨下颌骨有限元模型中包含PDL及其纤维结构的影响。一个高分辨率的模型，人类磨牙区创建从微型计算机断层扫描。这是第一次将PDL的纤维结构包含在具有真实牙齿和骨骼几何形状的模型中。结果表明，省略PDL创建了一个更刚性的模型，减少了在下颌体中观察到的应变，这是考虑下颌功能形态时感兴趣的。PDL的建模方式也会影响应变。PDL纤维的列入改变了下颌骨中的应变，增加了牙槽中的应变相比，PDL建模没有纤维。由于牙槽骨中的应变被认为在正畸牙齿移动过程中的骨重建中起着关键作用，未来旨在提高我们对正畸治疗的理解和管理的FE分析应包括PDL的纤维结构。
Alveolar bone remodelling is vital for the success of dental implants and orthodontic treatments. However, the underlying biomechanical mechanisms, in particular the function of the periodontal ligament (PDL) in bone loading and remodelling, are not well understood. The PDL is a soft fibrous connective tissue that joins the tooth root to the alveolar bone and plays a critical role in the transmission of loads from the tooth to the surrounding bone. However, due to its complex structure, small size and location within the tooth socket it is difficult to study in vivo. Finite element analysis (FEA) is an ideal tool with which to investigate the role of the PDL, however inclusion of the PDL in FE models is complex and time consuming, therefore consideration must be given to how it is included. The aim of this study was to investigate the effects of including the PDL and its fibrous structure in mandibular finite element models. A high-resolution model of a human molar region was created from micro-computed tomography scans. This is the first time that the fibrous structure of the PDL has been included in a model with realistic tooth and bone geometry. The results show that omission of the PDL creates a more rigid model, reducing the strains observed in the mandibular corpus which are of interest when considering mandibular functional morphology. How the PDL is modelled also affects the strains. The inclusion of PDL fibres alters the strains in the mandibular bone, increasing the strains in the tooth socket compared to PDL modelled without fibres. As strains in the alveolar bone are thought to play a key role in bone remodelling during orthodontic tooth movement, future FE analyses aimed at improving our understanding and management of orthodontic treatment should include the fibrous structure of the PDL.
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DOI：
10.1007/s000560050012
发表时间：
2000-01-01
期刊：
Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie
影响因子：
--
作者：
Bourauel, C;Vollmer, D;Jager, A
通讯作者：
Jager, A
DOI：
10.1016/j.ajodo.2009.11.014
发表时间：
2011-06-01
影响因子：
3
作者：
Hohmann, Ansgar;Kober, Cornelia;Sander, Franz Guenter
通讯作者：
Sander, Franz Guenter
影响因子：
--
作者：
FROST, HM
通讯作者：
FROST, HM
影响因子：
2.4
作者：
Groening, F.;Fagan, M. J.;O'Higgins, P.
通讯作者：
O'Higgins, P.
DOI：
10.1007/bf01298963
发表时间：
1999-01-01
期刊：
Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie
影响因子：
--
作者：
Bourauel, C;Freudenreich, D;Jager, A
通讯作者：
Jager, A