Evaluation of stress patterns on maxillary posterior segment when intruded with mini implant anchorage: A three-dimensional finite element study

Pekhale, Nikhita; Maheshwari, Amit; Kumar, Mukesh; Kerudi, Veerendra V; Patil, Harshal; Patil, Bhushan

doi:10.4103/2321-1407.173726

Cited by 7 publications

(7 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10,15 Pekhale et al evaluated the stress patterns on the posterior maxillary segment after intrusion with the help of mini-implants by applying a force of 300 grams to each dental segment and found 17.019 N/mm 2 of Von Mises stress on the buccal surface of the crown of maxillary first molar. 4 In the present study maximum tensile stress was observed at lingual aspect and was around 5.4MPa while as compressive stress was observed at the cervical region and was around 2.28 MPa (Figures 2, 3, 4 and 5). Maximum Von Mises stress was observed at lingual aspect and was around 8.49MPa which is more than the values recorded by Dawer et al 10 A force of 100 gram/cm 2 (0.01N/mm 2 ) was suggested by Bench et al as the ideal stress for the periodontal ligament which maintains the vascularity and prevents hyalinization.…”

Section: Discussionsupporting

confidence: 62%

See 1 more Smart Citation

To evaluate stress patterns in the periodontal ligament of maxillary molars when intruded with a mousetrap appliance: A FEM study

Shah¹

2020

IJODR

View full text Add to dashboard Cite

Mousetrap appliance is an effective treatment modality for anterior open bite that utilizes implants inserted into the anterior palate and brings about open bite correction by intruding the maxillary molars. This is a finite element study that assesses the stress contours around maxillary molars and in the periodontal ligament of the maxillary molars when they are intruded by a mousetrap appliance. Materials and Methods: A finite element model of the maxilla and the mousetrap appliance made of 288332 elements and 64771 nodes was generated using software tools like MIMICS and HYPERMESH. A simulated force of 100 grams was applied to the maxillary molar through the appliance and the stress contours were assessed. Results: Maximum tensile stress was observed at furcation region of the PDL and was around 4.49e-3 MPa (0.00449MPa) whereas maximum Von-Mises stress was observed at cervical region on both the lingual and buccal side which was around 2.06e-2MPa (0.0206MPa). Conclusion:It is therefore concluded that the mousetrap appliance which exerts a force within the range of recommended force for molar intrusion generates stress contours around the maxillary molar and in the periodontal ligament of the maxillary molar.

show abstract

Section: Discussionsupporting

confidence: 62%

“…288332 elements and 64771 nodes were used and the material properties assigned to the various parts were acquired from an existing study. 4 (Table 1). The boundary conditions were defined by constraining the top portion of the maxillary bone in all directions so that there would be no displacement or stress in that area.…”

Section: Methodsmentioning

confidence: 99%

To evaluate stress patterns in the periodontal ligament of maxillary molars when intruded with a mousetrap appliance: A FEM study

Shah¹

2020

IJODR

View full text Add to dashboard Cite

show abstract

“…It allows one to evaluate complex stress distributions and displacement patterns on the facial skeleton model [29]. Interpretation of the results of the analysis should be made carefully and prudently, because it is a skeletal model created on the basis of a 3D computed tomography reconstruction of the facial skeleton with material properties assigned according to Pekhale et al [22].…”

Section: Discussionmentioning

confidence: 99%

“…® ), where a resulting volumetric mesh of 10 nodal tetrahedrons of the second order was created. The finite element mesh was imported into the ANSYS 15.0 (Swanson Analysis System of USA) software, where material properties were assigned according to Pekhale et al (Table 1), boundary conditions were determined and calculations using the finite element analysis were performed [22]. The result is a dense mesh of higher order finite elements ensuring accurate mapping of the stress distribution and displacement field.…”

Section: Construction Of the Facial Skeleton Model For The Finite Element Analysismentioning

confidence: 99%

Impact of Osteotomy in Surgically Assisted Rapid Maxillary Expansion Using Tooth-Borne Appliance on the Formation of Stresses and Displacement Patterns in the Facial Skeleton—A Study Using Finite Element Analysis (FEA)

Zawiślak

Olejnik

Frątczak³

et al. 2020

Applied Sciences

View full text Add to dashboard Cite

The analysis aimed at studying stresses reduced according to Huber’s hypothesis and displacement patterns at selected sites of the facial skeleton using a tooth-borne appliance in surgically assisted rapid maxillary expansion. Five different variants of osteotomy of the midface and a variant without surgical intervention were compared to determine the best model for making an incision in the maxilla. The finite element analysis (FEA) was used for the study. Five osteotomy variants and a variant without osteotomy were modelled using a tooth-borne appliance on a facial skeleton model of a 23-year-old woman with skeletal malocclusion. The finite element mesh was constructed based on the geometry imported into the ANSYS 15.0 (Swanson Analysis System of USA) software, in which calculations were performed using the finite element analysis. Stress distributions and displacement patterns along the X, Y and Z axes are presented for each osteotomy variant with the expansion of the tooth-borne appliance at a level of 0.5 mm. As a result of the analysis it was found that osteotomy of the palatal suture in conjunction with Le Fort I osteotomy has the biggest impact on the course of maxillary expansion. If no osteotomy is performed, an increase in stresses reduced according to Huber occurs in the entire facial skeleton with a simultaneous absence of maxillary expansion.

show abstract

“…Besides, it has been reported that force application from counterbalancing sites lead to a more balanced intrusion than using transpalatal arch, and that root surface areas of the anchor tooth has to be considered [23]. Similarly, force applications from the buccal and palatal sides, and using a transpalatal arch with sufficient resistance could be advised in order to prevent buccal tipping during posterior intrusion [37].…”

Section: Discussionmentioning

confidence: 99%

Maxillary posterior intrusion with corticotomy-assisted approaches with zygomatic anchorage—a finite element stress analysis

Uysal¹,

Tuncer

2019

Prog Orthod.

View full text Add to dashboard Cite

Background Anterior open bite is one of the most difficult malocclusions to treat and maintain in orthodontics. An effective treatment approach to correct anterior open bite is the intrusion of maxillary posterior teeth. The aim of this study was to evaluate the effects of corticotomy-assisted posterior maxillary intrusion with zygomatic anchorage by using finite element stress analysis. Methods An acrylic bite block on the posterior teeth including two transpalatal arches were modeled and 1.96 N intrusive force was loaded. Three scenarios were set, first with no subapical corticotomy, second with buccal, and third with both buccal and palatal corticotomies. The stress distributions along the cortical, cancellous bone surfaces, and dental structures were assessed by finite element stress analysis. Results Stress distributions over cortical and cancellous bones were commonly located at the inferior curvature of the zygomatic buttress area and posterior teeth for all scenarios. Stress values above the apices of anchor teeth were decreased for both corticotomy scenarios. Increased stress distributions were observed in cancellous bone around corticotomy regions. Despite the acrylic appliance and transpalatal arches, the stresses along the posterior teeth were not uniform. The apical third of the first molar mesiobuccal apex showed the highest stress values in all scenarios. Conclusions Corticotomy-assistance effected biomechanical responses of dentoalveolar structures during maxillary posterior intrusion. There was no apparent difference for the stress levels of the root apices between corticotomy scenarios, pointing out that only buccal corticotomy may be a better option in corticotomy-assisted maxillary intrusion.

show abstract

Evaluation of stress patterns on maxillary posterior segment when intruded with mini implant anchorage: A three-dimensional finite element study

Cited by 7 publications

References 4 publications

To evaluate stress patterns in the periodontal ligament of maxillary molars when intruded with a mousetrap appliance: A FEM study

To evaluate stress patterns in the periodontal ligament of maxillary molars when intruded with a mousetrap appliance: A FEM study

Impact of Osteotomy in Surgically Assisted Rapid Maxillary Expansion Using Tooth-Borne Appliance on the Formation of Stresses and Displacement Patterns in the Facial Skeleton—A Study Using Finite Element Analysis (FEA)

Maxillary posterior intrusion with corticotomy-assisted approaches with zygomatic anchorage—a finite element stress analysis

Contact Info

Product

Resources

About