Ribbon-wise customized lingual appliance and orthodontic anchor screw for the treatment of skeletal high-angle maxillary protrusion without bowing effect

Inami, Toru; Ito, Goshi; Miyazawa, Ken; Tabuchi, Masako; Goto, Shigemi

doi:10.2319/072717-498.1

Cited by 12 publications

(8 citation statements)

References 15 publications

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“…A greater height tended to enlarge the moment of inertia and provide more rigid support to the occlusal plane. To our knowledge, only Inami et al reported a minimum vertical bowing effect with a ribbonwise lingual appliance [ 28 ]. However, they also remarked on insufficient control of the ribbon wire in lingual tipping due to the thinner geometry, and a palatal bar was needed to keep the tooth upright.…”

Section: Discussionmentioning

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

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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.

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Section: Discussionmentioning

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

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“…The greater height would enlarge the moment of inertia and provide more rigid support to the occlusal plane. To our knowledge, only Inami et al reported a minimum vertical bowing effect with a ribbon-wise lingual appliance [23]. However, they also pointed to insu cient control of the ribbon wire in lingual tipping due to the thinner geometry, and the palatal bar was needed to keep the tooth upright.…”

Section: Discussionmentioning

confidence: 92%

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

Quan

2021

Preprint

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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-inch and 0.025×0.019-inch), a rectangular wire (0.017×0.025-inch and 0.019×0.025-inch) and a round wire (Φ 0.018-inch and Φ 0.020-inch).Results: Among the three groups, ribbon wire (0.025×0.017-inch and 0.025×0.019-inch) 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-inch ribbon wire showed the highest Y-axis displacement. In the round wire group, Φ 0.020-inch wire displayed less rotation than Φ 0.018-inch wire, where the sagittal, frontal and occlusal rotation of Φ 0.020-inch wire was almost half of that of Φ 0.018-inch 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-inch arch wire displacement, which were much 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-inch 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 would lead 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 significantly reduced, but the possibility of buccal tipping in mandibular anterior teeth also increased.

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“… Reduction of the incidence of decalcification with its inherent savings in terms of enamel and financial burden (see discussion below), 20 Individualized treatment plans that can be predictably transferred to the patients' mouth, 21 Better torque control because of precise slot and arch wires dimensions, 22 Biomechanical advantages in terms of vertical control thanks to ribbon‐arch wires, 23 and Avoidance of secondary effects due to conventional non‐customized orthodontic treatment …”

Section: Why Lingual Orthodontics?mentioning

confidence: 99%

“…The use of customized and indirectly bonded braces minimizes errors in bracket positioning F I G U R E 5 Based on the patient's smile and facial esthetics the desired change in incisor exposure, angulation and alignment of the incisors is incorporated into the setup that will be the blueprint for appliance design and fabrication. Note the correction of the angulation of the midline and the relative extrusion of the upper incisors relative to the back teeth • Better torque control because of precise slot and arch wires dimensions, 22 • Biomechanical advantages in terms of vertical control thanks to ribbon-arch wires, 23 and • Avoidance of secondary effects due to conventional non-customized orthodontic treatment Human-error present in direct bonding techniques, 14 Inter-patient variability not accounted for with non-customized appliances, 24 and No preservation of arch form.…”

Section: Why Lingual Orthodontics?mentioning

confidence: 99%

Quality in orthodontics: The role of customized appliances

Grauer

2021

J Esthet Restor Dent

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Orthodontics as well as dentistry are undergoing a technological revolution with advances in medical imaging, 3D printing and customization of appliances and devices. Digital orthodontics can be defined as the process of manufacturing customized appliances based on a target setup which incorporates tooth positioning in six‐degrees‐of‐freedom. Three‐dimensional medical imaging provides better diagnostic tools and allows for fabrication of orthodontic appliances based on the coordinates system of the occlusal plane within the facial anatomy. This article describes the state‐of‐the‐art in goal‐driven orthodontic treatment, warns against the commercialization of our profession, and highlights the advantages of lingual orthodontics in terms of protection of the enamel.

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Ribbon-wise customized lingual appliance and orthodontic anchor screw for the treatment of skeletal high-angle maxillary protrusion without bowing effect

Cited by 12 publications

References 15 publications

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

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

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

Quality in orthodontics: The role of customized appliances

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