Comparison of the Effect of Transpalatal Arch on Periodontal Stress and Displacement of Molars When Subjected to Orthodontic Forces. A Finite Element Analysis

Begum, Mahbuba; Dinesh, M. R.; Amarnath, BC; Dharma, RM; Prashanth, CS; Shetty, K. Nillan; Singh, Varun Pratap

doi:10.9734/bjmmr/2016/22500

Cited by 2 publications

(4 citation statements)

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“…This means that TPA can reduce the loss of anchorage in the AP direction by four orders of magnitude during initial movement [8]. Begum reported that TPA prevented molar rotation during initial movement, and Raucci stated that TPA could prevent molar tipping and rotation [1,6]. Mesial forces subjected to TPA can cause molar tipping, but the tipping angle was similar to that for the models with and without TPA.…”

Section: Discussionmentioning

confidence: 87%

“…In order to determine the amount of stress in the presence and absence of TPA and when TPA is combined with a second molar, it is necessary to understand the stress distribution in the upper first molar where the TPA is placed, as well as the stress on the alveolar bone around the tooth. Some authors measured the stress on the first molar while splinting with a TPA and reported that TPA can reduce the stress distribution on the first molar and prevent molar rotation [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Anchorage depends on periodontal stress, and TPA can modify the stress distribution applied to the molars and surrounding tissue. Unfortunately, it is impossible to measure human periodontal stress distributions in vivo; therefore, an alternative approach that uses threedimensional (3D) simulation and finite element analysis (FEA) was developed [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Stress Distribution on the Upper First Molar and Alveolar Bone with the Transpalatal Arch and Upper Second Molar Using Finite Element Analysis

Pratiwi

Widayati

Purbiati

2019

Pesqui. bras. odontopediatria clín. integr.

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Objective: To evaluate the differences in the stress distribution on the upper first molar with and without transpalatal arch and a second molar when a 150 g force is applied during canine distalization using finite element analysis. Material and Methods: We constructed several models with data obtained by scanning human skulls using cone beam computed tomography. A robust three-dimensional maxillary model was then constructed by assembling the previously completed robust models of the maxilla and second molar with and without transpalatal arch, and canine distalization was simulated using a 150 g force. The data consisted of color spectrum figures representing the stress distribution. Results: For the upper first molar and its alveolar bone, there was a statistically significant difference in the stress distribution between the upper first molar with transpalatal arch, the upper first molar without transpalatal arch, and the upper first molar with transpalatal arch and a second molar as reinforcement. Conclusion: Stress distribution on the first molar and alveolar bone, indicated by the maximum and minimum principal stress, as well as the pressure von Mises, exhibited a similar pattern. The highest amount of stress was observed in the model of the first molar without transpalatal arch, followed by the model of the first molar with transpalatal arch and, finally, the model of the first molar with transpalatal arch and a second molar.

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Section: Discussionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulation of Stress Distribution on the Upper First Molar and Alveolar Bone with the Transpalatal Arch and Upper Second Molar Using Finite Element Analysis

Pratiwi

Widayati

Purbiati

2019

Pesqui. bras. odontopediatria clín. integr.

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“…Also, it is not uniform throughout the root surface, and the trabeculation, density, and physical characteristics of tissue vary from site to site. 25 …”

Section: Discussionmentioning

confidence: 99%

Comparison of the effectiveness of butterfly arch versus transpalatal arch in anchorage reinforcement: A linear 3D finite element study

Bano

Shivamurthy

et al. 2022

J Dent Res Dent Clin Dent Prospects

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Background. Although there are various intraoral and extraoral appliances for anchorage management in orthodontics, most fail to preserve the anchorage efficiently. Thus, there is a need for an appliance that can preserve anchorage in the sagittal, vertical, and transverse directions with good patience compliance and cost-effectiveness. This study compared the efficacy of butterfly arch and transpalatal arch (TPA) as an anchorage reinforcing unit during orthodontic space closure using a linear finite element model. Methods. A 3D model of the maxilla and associated structures was developed from CT images of an individual’s skull at a slice thickness of 1 mm. The magnitude of movements of anchor teeth in vertical, horizontal, and transverse directions was calculated in first premolar extraction cases during anterior retraction using a linear finite element model analysis and compared in two situations―butterfly arch and TPA attached to maxillary first molar for anchorage. Results. The anterior teeth had similar movements in the case of TPA and butterfly arch. There was more mesial and lingual movement in the first molars with TPA than in the butterfly arch, which had buccal but no mesial movement. The anterior teeth showed extrusion and the second premolars showed intrusion with TPA. Also, the von Mises stress and maximum principal stress were maximum with TPA at the cervical region of anterior and posterior teeth compared to the butterfly arch, where both stresses were uniformly distributed all over the teeth. Conclusion. A butterfly arch with its unique design, configuration, and biomechanical properties can be used as a device that can maintain the posterior anchorage efficiently

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Comparison of the Effect of Transpalatal Arch on Periodontal Stress and Displacement of Molars When Subjected to Orthodontic Forces. A Finite Element Analysis

Cited by 2 publications

References 0 publications

Simulation of Stress Distribution on the Upper First Molar and Alveolar Bone with the Transpalatal Arch and Upper Second Molar Using Finite Element Analysis

Simulation of Stress Distribution on the Upper First Molar and Alveolar Bone with the Transpalatal Arch and Upper Second Molar Using Finite Element Analysis

Comparison of the effectiveness of butterfly arch versus transpalatal arch in anchorage reinforcement: A linear 3D finite element study

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