Gil-Marques Blanca, Pallarés-Sabater Antonio, Brizuela-Velasco Aritza, Sánchez Lasheras Fernando, Lázaro-Calvo Pedro, Gómez-Adrián María Dolores, Larrazábal-Morón Carolina
Doctoral School, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain.
School of Dentistry, Departament Medical and Surgery, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain.
Materials (Basel). 2022 Dec 17;15(24):9039. doi: 10.3390/ma15249039.
Edentulism produces resorption of alveolar bone processes, which can complicate placement of dental implants. Guided bone regeneration techniques aim to recover the volume of bone. These treatments are susceptible to the surgical technique employed, the design of the autologous block or the tension of the suture. These factors can relate to major complications as the lack of primary closure and dehiscence. The present study, using finite element analysis, aimed to determine differences in terms of displacement of the oral mucosa, transferred stress according to Von Mises and deformation of soft tissue when two block graft designs (right-angled and rounded) and two levels of suture tension (0.05 and 0.2 N) were combined. The results showed that all the variables analyzed were greater with 0.2 N. Regarding the design of the block, no difference was found in the transferred stress and deformation of the soft tissue. However, displacement was related to a tendency to dehiscence (25% greater in the right-angled/chamfer design). In conclusion different biomechanical behavior was observed in the block graft depending on the design and suture tension, so it is recommended to use low suture tension and rounded design. A novel finite element analysis model is presented for future investigations.
无牙颌会导致牙槽骨吸收，这会使牙种植体的植入变得复杂。引导骨再生技术旨在恢复骨量。这些治疗易受所采用的手术技术、自体骨块的设计或缝线张力的影响。这些因素可能会导致诸如无法一期闭合和裂开等严重并发症。本研究采用有限元分析，旨在确定当两种骨块移植设计（直角形和圆形）与两种缝线张力水平（0.05 N和0.2 N）相结合时，口腔黏膜位移、根据冯·米塞斯应力转移的应力以及软组织变形方面的差异。结果表明，所有分析变量在0.2 N时均更大。关于骨块设计，在软组织的应力转移和变形方面未发现差异。然而，位移与裂开倾向有关（直角形/倒角设计中位移大25%）。总之，根据设计和缝线张力，在骨块移植中观察到了不同的生物力学行为，因此建议使用低缝线张力和圆形设计。本文提出了一种新颖的有限元分析模型以供未来研究。
