Numerical/experimental analysis of the stress field around miniscrews for orthodontic anchorage

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Numerical/experimental analysis of the stress field around miniscrews for orthodontic anchorage.

The aims of this study were to analyse the stress distribution developing around an orthodontic miniscrew (OM) inserted into the maxilla and to determine the stress field changes for different screw lengths and for different levels of osseointegration occurring at the bone/screw interface. An integrated experimental/numerical approach was adopted. Using the photoelastic technique, the stress fi...

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Miniscrews for orthodontic anchorage: nanoscale chemical surface analyses.

OBJECTIVES The goal of this study was to determine the chemical composition of the passivation layer of three clinically available orthodontic miniscrews at different depths. MATERIALS AND METHODS The miniscrews used were Aarhus Mini-Implant (AAR), IMTEC Ortho (IMT), and VectorTAS (VEC). The chemical compositions of the as-received miniscrews were determined by X-ray photoelectron spectroscop...

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Acceptance of orthodontic miniscrews as temporary anchorage devices

OBJECTIVE To study the patient's acceptance, expectation, and experience of pain with orthodontic temporary miniscrews. METHODS Questionnaires were distributed to 165 potential temporary orthodontic miniscrew recipients or their parents. Using the numeric rating scale, patients who received miniscrews as part of their orthodontic treatment were also asked to rate the pain or discomfort experi...

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Finite Element Analysis of Stress and Strain Distribution in the Bone around the Implants used for Orthodontic Anchorage

Biomechanical influences on bone structure play an important role in the longevity of bone around an implant. The quantity and direction of applied force influence the implant and cause deformation of the bone. FEA was used to analyze the changes in the bone on loading the implant with orthodontic force in oblique and vertical directions and orthopedic force. The Mini-implants used in the prese...

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Fiber- Reinforced Composite for Orthodontic Anchorage Technique

Introduction: In orthodontic treatment, adequate anchorage is necessary to move the intended teeth. In some cases, just anterior teeth are malaligned, while posterior occlusion is acceptable. Therefore, the posterior teeth could be integrated by fiber-reinforced composite (FRC) to provide a rigid anchorage. This method proved advantageous since brackets are bonded just to anter...

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ژورنال

عنوان ژورنال: The European Journal of Orthodontics

سال: 2008

ISSN: 0141-5387,1460-2210

DOI: 10.1093/ejo/cjn066