Biomechanical analysis of occlusal modes on the periodontal ligament while orthodontic force applied

Tsai, Ming-Tzu; Huang, Heng‐Li; Yang, Shih-Guang; Su, Kuo‐Chih; Fuh, Lih‐Jyh; Hsu, Jui‐Ting

doi:10.1007/s00784-021-03868-x

Cited by 8 publications

(6 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stress in PDL is also a significant problem that cannot be ignored. It is produced by the aligner and transmitted through the tooth tissue to the periodontium[ 37 ]. In our study, the BPA group displayed better stress distribution.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of the attachment position in molar intrusion with clear aligners: a finite element study

et al. 2022

View full text Add to dashboard Cite

Objective To evaluate the biomechanical effects of different attachments’ position for maxillary molar intrusion with clear aligner treatment by finite element analysis. Methods Cone-beam computed tomography images of a patient with supra-eruption of the maxillary second molars were selected to construct three-dimensional models of the maxilla, periodontal ligaments, dentition, and clear aligner. The models were divided into four groups depending on the attachment location on the first molar: (1) no attachment (NA), (2) buccal attachment (BA), (3) palatal attachment (PA), and (4) bucco-palatal attachment (BPA). After applying an intrusion of 0.2 mm on the second molar, displacements and stress distributions of the teeth, aligner, and periodontal ligament were analyzed with the finite element software. Results All groups displayed equivalent movement patterns of aligners. The NA and BA groups showed buccal tipping of the second molar, while the PA group showed palatal tipping. The BPA group had the highest intruding value and the lowest buccal/palatal tipping value. All groups showed mesial tipping of the second molar. Stress distribution in the periodontal ligament strongly correlated with the attachment position. The BPA group showed the best stress distribution. Conclusion Combined BA and PA could effectively prevent buccal and palatal tipping and showed the best efficiency in intruding the second molar. The second molar showed an unavoidable tendency to tip mesially, regardless of the attachment position.

show abstract

Section: Discussionmentioning

confidence: 99%

Effectiveness of the attachment position in molar intrusion with clear aligners: a finite element study

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The reason for this lack of data could be the great challenge in identifying tooth movement and deformation under the coexistence of sophisticated anatomical structures and various orthodontic elements [ 14 ]. Finite element analysis (FEA), which is an engineering and mathematical method for reaction prediction, has been suggested to be a reliable method in orthodontic research through craniofacial complex remodelling [ 15 , 16 ].…”

Section: Backgroundsmentioning

confidence: 99%

The cross-sectional effects of ribbon arch wires on Class II malocclusion intermaxillary traction: a three-dimensional finite element analysis

Xie

2021

BMC Oral Health

View full text Add to dashboard Cite

Background The application of intermaxillary traction is often accompanied by the unexpected movement of dentition, especially anchorage teeth. The aim of this study was to comprehensively compare the influence of cross-sectional shape of ribbon arch wires with edgewise and round wires on intermaxillary traction in Class II malocclusion treatment using FEA simulation. Methods The dentofacial structure was simulated in finite element software. A retraction force of 1.5 N was applied to different cross-sectional orthodontic arch wires: a ribbon wire (0.025 × 0.017-in. and 0.025 × 0.019-in.), a rectangular wire (0.017 × 0.025-in. and 0.019 × 0.025-in.) and a round wire (Φ 0.018-in. and Φ 0.020-in.). Results Among the three groups, ribbon wire (0.025 × 0.017-in. and 0.025 × 0.019-in.) exhibited the lowest displacement in the X-axis (12.61 μm and 12.77 μm, respectively) and Z-axis (8.99 μm and 9.06 μm, respectively). However, the 0.025 × 0.017-in. ribbon wire showed the highest Y-axis displacement. In the round wire group, Φ 0.020-in. wire displayed less rotation than Φ 0.018-in. wire, where the sagittal, frontal and occlusal rotation of Φ 0.020-in. wire was almost half of that of Φ 0.018-in. wire. The movement of the first molar region was intermediate between the ribbon arch group and the round wire group. Notably, the values of the 0.025 × 0.017-in. arch wire displacement, which were higher than those of any other group, peaked at 0.019 mm in the central incisor region with a spike-like shape. The deformation range of the Φ 0.018-in. wire group was the largest in this study. Conclusions The cross-section of the arch wire influenced force delivery in Class II intermaxillary traction. With the same shape, a larger cross-sectional area led to less mandibular dentition movement. For the rectangular arch wire and ribbon arch wire groups, since the height and width were inverted, the vertical displacement of anchorage teeth in the ribbon wire group was reduced, but the possibility of buccal tipping in mandibular anterior teeth also increased.

show abstract

“…Those all provide clues for the bionic anti-slipping design of the crimping structure. On the other hand, the most stable occlusal mode for both human and animal teeth is known as the intercuspid position (ICP), as illustrated in Figure 3 [ 19 ]. This occlusal contact occurs between the cusp and the fossa and is another manifestation of convergent evolution.…”

Section: Introductionmentioning

confidence: 99%

“…This occlusal contact occurs between the cusp and the fossa and is another manifestation of convergent evolution. It contributes to transmitting the occlusal load during clenching in all directions perpendicular to the inclined plane of the tooth cusp, thereby avoiding the concentration of local occlusal force caused by two-point contact, as well as damage to the tooth and periodontal tissue during occlusion [ 19 – 21 ]. From here we can see that the vertical occlusion of teeth is highly similar to the crimping process of industrial hose; hence, developing a bionic crimping structure inspired by the surface topography and functional principle of typical teeth may be an effective way to achieve high-reliability crimping.…”

Section: Introductionmentioning

confidence: 99%

Bionic Anti-Slipping Crimping Structure for Industrial Hose Assembly Inspired by Ruminant Molars

Zheng

Cheng

Yuan

2022

Applied Bionics and Biomechanics

View full text Add to dashboard Cite

It is highly desirable to improve the anti-slipping stability of the crimping structure for a reliable connection. This study innovatively presents a biomimetic strategy for designing a high-performance crimping structure for industrial hose assembly based on evidence that the special infundibulum dentis structure on the occlusal surface of ruminant molars has the potential of anti-slippage and can also reduce the risk of stress concentration. Utilizing reverse engineering technology, the three-dimensional (3D) digital model of the bovine molar was built as a representative prototype, and then corresponding characteristics of the infundibulum dentis were extracted with a fitting method for the bionic design of the crimping structure. Numerical simulations and experimental results both indicate that the bionic crimping structure has high resistance to slippage of hose body compared with the traditional type, and further, the formation mechanism of bionic anti-slipping performance was discussed.

show abstract

Biomechanical analysis of occlusal modes on the periodontal ligament while orthodontic force applied

Cited by 8 publications

References 51 publications

Effectiveness of the attachment position in molar intrusion with clear aligners: a finite element study

Effectiveness of the attachment position in molar intrusion with clear aligners: a finite element study

The cross-sectional effects of ribbon arch wires on Class II malocclusion intermaxillary traction: a three-dimensional finite element analysis

Bionic Anti-Slipping Crimping Structure for Industrial Hose Assembly Inspired by Ruminant Molars

Contact Info

Product

Resources

About