Measurement of forces and moments around the maxillary arch for treatment of a simulated lingual incisor and high canine malocclusion using straight and mushroom archwires in fixed lingual appliances

Owen, Brandon; Gullion, Geoffry; Heo, Giseon; Carey, Jason P.; Major, Paul W.; Romanyk, Dan L.

doi:10.1093/ejo/cjx028

Cited by 21 publications

(28 citation statements)

References 10 publications

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“…The straight lingual archwire 6 requires a thicker composite base between the tooth and bracket that further decreases the interbracket distance for the lingual appliance and can potentially change the location of load application with respect to the CR. 7 Prior research has also demonstrated significant differences in the biomechanical systems of straight and mushroom lingual archwires. 7,8 Dental arch expansion through an engaged archwire is one of the strategies used in orthodontics to resolve dental crowding.…”

Section: Introductionmentioning

confidence: 99%

“…7 Prior research has also demonstrated significant differences in the biomechanical systems of straight and mushroom lingual archwires. 7,8 Dental arch expansion through an engaged archwire is one of the strategies used in orthodontics to resolve dental crowding. Grauer and Proffit 9 demonstrated that fully customized lingual orthodontic appliances were accurate in achieving the goals planned in the initial set-up with the exception of the full amount of planned expansion.…”

Section: Introductionmentioning

confidence: 99%

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The biomechanics of posterior maxillary arch expansion using fixed labial and lingual appliances

Kaur¹,

Owen²,

Tran³

et al. 2020

The Angle Orthodontist

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Objective To compare the biomechanics of straight labial, straight lingual, and mushroom lingual archwire systems when used in posterior arch expansion. Materials and Methods An electro-mechanical orthodontic simulator allowing for buccal–lingual and vertical displacements of individual teeth and three-dimensional force/moment measurements was instrumented with anatomically shaped teeth for the maxillary arch. In-Ovation L brackets were bonded to lingual surfaces, and Carriere SLX brackets were bonded to labial surfaces to ensure consistency of slot dimensions. Titanium molybdenum archwires were bent to an ideal arch form, and the teeth on the orthodontic simulator were set to a passive position. Posterior teeth from the canine to second molar were moved lingually to replicate a constricted arch. From the constricted position, the posterior teeth were simultaneously moved until the expansive force decreased below 0.2 N. Initial force/moment systems and the amount of predicted expansion were compared for posterior teeth at a significance level of α = 0.05. Results Archwire type affected both the expected expansion and initial force/moment systems produced in the constricted position. In general, the lingual systems produced the most expansion. The archwire systems were not able to return the teeth to their ideal position, with the closest system reaching 41% of the intended expansion. Conclusions In general, lingual systems were able to produce greater expansion in the posterior regions when compared with labial systems. However, less than half of the intended arch expansion was achieved with all systems tested.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The biomechanics of posterior maxillary arch expansion using fixed labial and lingual appliances

Kaur¹,

Owen²,

Tran³

et al. 2020

The Angle Orthodontist

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“…Badawi et al designed a promising system to accurately measure the six degrees of freedom of orthodontic forces applied on all teeth by fixed appliances. The designed system was successfully used to study orthodontic force on full dentition with an archwire in several treatment scenarios . These in vitro measurement systems provide useful tools for the clinical estimation of orthodontic force.…”

Section: Introductionmentioning

confidence: 99%

“…The designed system was successfully used to study orthodontic force on full dentition with an archwire in several treatment scenarios. [16][17][18][19][20] These in vitro measurement systems provide useful tools for the clinical estimation of orthodontic force. However, it is timeconsuming and costly to physically produce the oral treatment condition in vitro for accurate measurement.…”

Section: Introductionmentioning

confidence: 99%

Simulation of orthodontic force of archwire applied to full dentition using virtual bracket displacement method

Zhang

Gan

Zhao

et al. 2019

Numer Methods Biomed Eng

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Objective Orthodontic force simulation of tooth provides important guidance for clinical orthodontic treatment. However, previous studies did not involve the simulation of orthodontic force of archwire applied to full dentition. This study aimed to develop a method to simulate orthodontic force of tooth produced by loading a continuous archwire to full dentition using finite element method. Method A three‐dimensional tooth‐periodontal ligament‐bone complex model of mandible was reconstructed from computed tomography images, and models of brackets and archwire were built. The simulation was completed through two steps. First, node displacements of archwire before and after loading were estimated through moving virtual brackets to drive archwire deformation. Second, the obtained node displacements were loaded to implement the loading of archwire, and orthodontic force was calculated. An orthodontic force tester (OFT) was used to measure orthodontic force in vitro for the validation. Results After the simulation convergence, archwire was successfully loaded to brackets, and orthodontic force of teeth was obtained. Compared with the measured orthodontic force using the OFT, the absolute difference of the simulation results ranged from 0.5 to 22.7 cN for force component and ranged from 2.2 to 80.0 cN•mm for moment component, respectively. The relative difference of the simulation results ranged from 2.5% to 11.0% for force component, and ranged from 0.6% to 14.7% for moment component, respectively. Conclusions The developed orthodontic force simulation method based on virtual bracket displacement can be used to simulate orthodontic force provided by the archwire applied to full dentition.

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“…[18][19][20] Precisely applying such relatively low force levels has already been shown to be possible with an intrusion arch. 19,21 Even though some studies have used a full arch simulation to study load systems in orthodontics, [22][23][24] the literature fails to show how much force is applied to a specific tooth when an intrusion bend is placed on a finishing wire. Therefore, the aim of this study was to measure whether a standardized intrusive vertical bend in a maxillary lateral incisor produces any side effects in other planes of space.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the load system produced by a single intrusion bend in a maxillary lateral incisor bracket with different alloys

Shintcovsk¹,

Júnior

White³

et al. 2018

The Angle Orthodontist

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Measurement of forces and moments around the maxillary arch for treatment of a simulated lingual incisor and high canine malocclusion using straight and mushroom archwires in fixed lingual appliances

Cited by 21 publications

References 10 publications

The biomechanics of posterior maxillary arch expansion using fixed labial and lingual appliances

The biomechanics of posterior maxillary arch expansion using fixed labial and lingual appliances

Simulation of orthodontic force of archwire applied to full dentition using virtual bracket displacement method

Evaluation of the load system produced by a single intrusion bend in a maxillary lateral incisor bracket with different alloys

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