Role of Mini-implants in Orthodontics

Nayak, US Krishna; Malviya, Nikhil; Mahesh, Lanka

doi:10.5005/jp-journals-10012-1048

Cited by 7 publications

(2 citation statements)

References 76 publications

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“…According to research by M. Jasmine and colleagues, increasing the insertion angles from 30 to 45 degrees, 60 degrees, and 90 degrees reduced micro-implant and cortical bone displacements [ 21 ]. Studies have also shown that for improved stability and effectiveness when placing a micro-implant within the posterior buccal area of the maxilla and the mandible, mini-screws are advised to be inserted 70 to 80 degrees into the long longitudinal axis of the teeth [ 22 , 23 ]. The greatest retention was achieved when temporary anchoring devices were positioned 90 degrees from the synthetic cortical plate.…”

Section: Discussionmentioning

confidence: 99%

Influence of the Curve of Spee on Tooth Displacement Patterns: A Finite Element Analysis at Varying Implant Heights

Pareek,

Kumar,

Bhariya

et al. 2024

Cureus

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Background Monocortical mini-screw-type temporary anchorage devices (TADs), or mini-screws, have significantly impacted orthodontic treatment strategies, especially in severe crowding and protrusion cases. These devices offer flexibility in placement sites, but the chosen location can considerably influence tooth displacement patterns. Key factors include the 'line of force' and the biomechanical properties of orthodontic tools. By analyzing tension distribution and three-dimensional displacements, the finite element method (FEM) provides a thorough means to comprehend these patterns. The Curve of Spee (COS) is a crucial factor potentially affecting displacement. Objective This study aimed to leverage finite element analysis (FEA) to understand the impact of varying mini-implant heights (10 mm, 13 mm, and 16 mm) on the displacements of different tooth types under a consistent force of 150 gm and compare these displacements both in the presence and absence of the COS. Materials and methods A CAD model of the jaw and teeth was developed using CT scan data and a Rexcan III 3D White Light Scanner. This model was meshed in Altair HyperMesh using tetrahedral elements, resulting in a Finite Element Model. The model incorporated various components, including teeth, the periodontal ligament (PDL), alveolar bone, brackets, a titanium mini-screw, and an archwire measuring 0.019 x 0.025 inches. Unique material properties were assigned to the PDL, and the assembly accurately replicated the clinical alignment of the archwire and brackets. Subsequently, stress and strain analyses were conducted on the model using the FEM. Results The displacement patterns of various teeth at implant heights of 10 mm, 13 mm, and 16 mm under a 150-gm force were analyzed in relation to the COS. Notably, for the central incisor, the COS significantly affected displacements in the Y and Z directions. Similarly, the Lateral Incisor and Canine exhibited marked changes in the Z direction with the presence of the COS. The Second Premolar's apex displacement showed significant variation due to the COS, while the First Molar displayed notable changes in the X direction. Generally, the presence of the COS either maintained or slightly increased Z-directional displacements across teeth, particularly at the apices. Conclusion The presence of COS significantly influences tooth displacement patterns when using mini-screws at different implant heights. Central incisors, lateral incisors, and canines are particularly sensitive to changes in the Z direction with the COS. The biomechanical analysis emphasizes the importance of considering COS in treatment planning for optimal results with mini-implants in orthodontics.

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Section: Discussionmentioning

confidence: 99%

Influence of the Curve of Spee on Tooth Displacement Patterns: A Finite Element Analysis at Varying Implant Heights

Pareek,

Kumar,

Bhariya

et al. 2024

Cureus

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“…Orthodontic mini-implants are considered capable of being an absolute anchor because the reciprocal force from the anterior retraction will be transmitted to the alveolar bone without involving the posterior teeth and is not influenced by patient compliance factors (Antolis et al, 2021). In addition, mini implants in orthodontic can be used to treat intrusion/extrusion of teeth, close edentulous spaces, repositioning of a malposed tooth, reinforced anchorage, partial edentulism, correct undesired occlusion, and orthopedic movement (Nayak and Malviya, 2011;Sheoran et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Molecular docking of polyether ether ketone and nano-hydroxyapatite as biomaterial candidates for orthodontic mini-implant fabrication

Ardani¹,

Nugraha²,

Suryani³

et al. 2022

J Pharm Pharmacogn Res

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Context: Modified polyether ether ketone (PEEK) by adding nano-hydroxyapatite (HA) material on its fixture for mini-implant fabrication may increase resistance force through osseointegration. Aims: To analyze the binding molecular docking of PEEK incorporated with HA as a biomaterial candidate for orthodontic mini-implant fabrication through a bioinformatic approach, an in silico study. Methods: 3D ligand structure consisting of HA, PEEK and target proteins consisting of osteopontin, osteocalcin, osteonectin, bone morphogenetic protein 4 (BMP4), bone morphogenetic protein 2 (BMP2), bone morphogenetic protein 7 (BMP7), alkaline phosphatase (ALP), runt-related transcription factor 2 (RUNX2), Insulin growth factor-1 (IGF-1), osterix, tartrate-resistant acid phosphatase (TRAP), collagen alpha-1 (COL1A1) obtained from RCSB-PDB. It was analyzed the binding affinity of a single HA, PEEK, and HA + PEEK complex to twelve target proteins related to osseointegration. The types of chemical interactions produced by the ligands in the target protein domain consisted of Van der Waals, hydrogen, hydrophobic, pi, and alkyl. Results: The blind docking simulation succeeded in identifying the most negative binding affinity; it was found in the HA + PEEK molecular complex compared to HA and PEEK in the single condition. The type of chemical interaction formed consisted of hydrogen, van der Waals, pi, and alkyl. HA+PEEK showed the most negative binding affinity with ALP and IGF-1, as much as -8.7 binding affinity. Conclusions: The molecular docking of PEEK with HA exhibited a prominent binding affinity with osteogenic markers like ALP and IGF-1 in silico, allowing it to have a higher potential than nano-HA or PEEK as a single biomaterial for osseointegration as the fabrication of mini-implants that may support orthodontic treatment.

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Mini implant ‘Safe Zones’ in orthodontics: A comprehensive review

Anbarasu¹,

Ramesh

Annamalai³

et al. 2022

ADR

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In prosthetic dentistry the quality of life of patients with tooth loss have been significantly enhanced with the use of dental implants likewise in Orthodontics mini implants has been instrumental in expanding the envelope of treatment possibility. The incorporation of mini implants into orthodontic treatment planning has allowed for predictable anchorage control and has increased the ability to correct severe skeletal and dental discrepancies. Despite the great interest in anchorage control with Mini Implants, the safe implantation of the mini implant in different regions is of major concern. Thus learning about the anatomy and safe zones for placing Mini Implants are of paramount importance.

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Role of Mini-implants in Orthodontics

Cited by 7 publications

References 76 publications

Influence of the Curve of Spee on Tooth Displacement Patterns: A Finite Element Analysis at Varying Implant Heights

Influence of the Curve of Spee on Tooth Displacement Patterns: A Finite Element Analysis at Varying Implant Heights

Molecular docking of polyether ether ketone and nano-hydroxyapatite as biomaterial candidates for orthodontic mini-implant fabrication

Mini implant ‘Safe Zones’ in orthodontics: A comprehensive review

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