Relevant bibliographies by topics / Orthodontic appliances. Orthodontic Wires

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Orthodontic appliances. Orthodontic Wires'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Orthodontic appliances. Orthodontic Wires"

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Hoseini, Mohammad, Seyed Morteza Saadat Mostafavi, Navid Rezaei, and Ehsan Javadzadeh Boluri. "Orthodontic Wire Ingestion during Treatment: Reporting a Case and Review the Management of Foreign Body Ingestion or Aspiration (Emergencies)." Case Reports in Dentistry 2013 (2013): 1–3. http://dx.doi.org/10.1155/2013/426591.

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Today orthodontic treatment is in growing demand and is not limited to a specific age or social group. The nature of orthodontic treatment is such that the orthodontic wires and appliances, which are used to apply force and move the teeth, are exposed to the oral cavity. Shaping and replacing these wires in oral cavity are the major assignments of orthodontist on appointments. Therefore, we can say that orthodontic treatment requires working with dangerous tools in a sensitive place like oral cavity which is the entrance of respiratory and digestive systems. In this paper, a case of ingesting a broken orthodontic wire during eating is reported, and also necessary remedial measures at the time of encountering foreign body ingestion or aspiration are provided.
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Silvia-Izabella, Pop, Păcurar Mariana, Bratu Dana Cristina, Pop Rv, and Chibelean Manuela. "Clinicians' Choices in Selecting Orthodontic Archwires." Acta Medica Marisiensis 59, no. 4 (August 1, 2013): 212–18. http://dx.doi.org/10.2478/amma-2013-0050.

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Abstract Objective: The aim of this study was to assess the choices made by clinicians in selecting archwires during the initial, intermediate and final stages of orthodontic treatment with fixed appliances. Methods: We carried out a questionnaire-based study at the Orthodontics and Pedodontics Clinic Târgu Mureș, between March 2012 and September 2012. The questionnaires consisted of two parts: the first included questions related to the dimension, alloy used in fabrication, section (round or rectangular) and manufacturer of the archwires used by the orthodontists in their orthodontic practice, the second part was concerned with their personal opinion about the physical properties and disadvantages of the archwires. Results: From a total number of 90 distributed questionnaires, 62 were returned. The majority of clinicians are using stainless steel (SS) and nickel-titanium alloy (NiTi) wires in their fixed orthodontic treatments, very few are using beta-titanium (Beta Ti), copper nickel-titanium (Co- NiTi) and esthetic archwires. The preferred dimension seem to be 0.022 inches in the appliance system. Regarding the wire dimensions, 0.014, 0.016 inch wires are mostly used from the round section group and 0.016 × 0.022 inch, 0.017 × 0.025 inch from the rectangular ones. Conclusions: There is a general lack of agreement between the clinicians surveyed regarding the properties of an ideal archwire and the disadvantages of the used wires. The most frequently used alloys seemed to be the SS and NiTi
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Sfondrini, Maria, Lorenzo Preda, Fabrizio Calliada, Lorenzo Carbone, Luca Lungarotti, Luisa Bernardinelli, Paola Gandini, and Andrea Scribante. "Magnetic Resonance Imaging and Its Effects on Metallic Brackets and Wires: Does It Alter the Temperature and Bonding Efficacy of Orthodontic Devices?" Materials 12, no. 23 (November 30, 2019): 3971. http://dx.doi.org/10.3390/ma12233971.

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Magnetic resonance imaging (MRI) is a widely used diagnostic technique. Patients wearing orthodontic appliances are often requested to remove their appliances, even when the MRI exam involves anatomical areas far from mouth, in order to avoid heating of the metal and detachment of the appliance. The purpose of the present investigation was to measure and compare temperature changes and orthodontic appliances’ adhesion to enamel after different MRIs. A total of 220 orthodontic brackets were bonded on bovine incisors and wires with different materials (stainless steel and nickel titanium). Moreover, various sizes (0.014″ and 0.019″ × 0.025″) were engaged. Appliances were submitted to MRI at two different powers (1.5 T and 3 T). The temperatures of brackets and wires were measured before and after MRI. Subsequently, the shear bond strength (SBS) and adhesive remnant index (ARI) scores were recorded. Statistical analysis was performed. After MRI, a significant increase in the temperature was found for both the brackets and wires in some groups, even if the mean temperature increase was clinically insignificant, as the temperature ranged between 0.05 °C and 2.4 °C for brackets and between 0.42 °C and 1.74 °C for wires. The MRI did not condition bracket adhesion in any group. No differences were reported when comparing the 1.5 T with 3 T groups. The ARI Scores were also significantly lower after MRI. The results of the present report show that, under MRI, orthodontic appliances present a low temperature rise and no debonding risk. Therefore, the removal of orthodontic appliance is not recommended routinely, but is suggested only in the case of a void risk or potential interference in image quality.
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İşman, Eren, Rıdvan Okşayan, Oral Sökücü, and Serdar Üşümez. "Temperature Changes of Pulp Chamber duringIn VitroLaser Welding of Orthodontic Attachments." Scientific World Journal 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/589461.

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The use of lasers has been suggested for orthodontists to fabricate or repair orthodontic appliances by welding metals directly in the mouth. This work aimed to evaluate the temperature changes in the pulp chamber during welding of an orthodontic wire to an orthodontic molar band using Nd : YAG laserin vitro. A freshly extracted human third molar with eliminated pulpal tissues was used. J-type thermocouple wire was positioned in the pulp chamber. A conductor gel was used in the transferring of outside temperature changes to the thermocouple wire. An orthodontic band was applied to the molar tooth and bonded using light cured orthodontic cement. Twenty five mm length of 0.6 mm diameter orthodontic stainless steel wires was welded to the orthodontic band using Nd : YAG laser operated at 9.4 watt. Temperature variation was determined as the change from baseline temperature to the highest temperature was recorded during welding. The recorded temperature changes were between 1.8 and 6.8°C (mean: 3.3 ± 1.1°C). The reported critical 5.5°C level was exceeded in only one sample. The results of this study suggest that intraoral use of lasers holds great potential for the future of orthodontics and does not present a thermal risk. Further studies with larger samples and structural analysis are required.
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Anuwongnukroh, Niwat, Yosdhorn Chuankrerkkul, Surachai Dechkunakorn, Pornkiat Churnjitapirom, and Theeralaksna Suddhasthira. "Bending Properties of General Purpose Stainless Steel Wire Formed for Orthodontic Use." Advanced Materials Research 746 (August 2013): 394–99. http://dx.doi.org/10.4028/www.scientific.net/amr.746.394.

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The archwire is generally used in fixed appliances for orthodontic treatment to correct dental malocclusion. However, it is interesting to know whether general purpose stainless steel wire could replace commercial orthodontic archwire in orthodontic practice for economic reasons. The purpose of this study was to determine the bending properties of general purpose stainless steel wire compared with commercial orthodontic stainless steel wires after forming as an archwire for orthodontic use. The samples used in this study were 90 general purpose and 45 commercial (Highland) round stainless steel wires in 0.016, 0.018, and 0.020 sizes (30 general purpose and 15 commercial wires for each size). All 15 general purpose stainless steel wires with different sizes were formed into orthodontic archwire with a Universal Testing Machine. All samples were tested (three-point bending test) for mechanical properties. The results showed no significant difference between general purpose and commercial orthodontic wires in size 0.016 for 0.1 mm offset bending force, 0.2% yield strength, and springback. Although many mechanical properties of general purpose wires differed from commercial wires, their values conformed to other previous studies within the range of clinical acceptance. In conclusion, orthodontic formed general purpose round stainless steel wires had statistically different (p <0.05) mechanical properties from commercial orthodontic stainless steel wires (Highland) but the mechanical properties were acceptable to use in orthodontic treatment.
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Jordan, Laurence, Pascal Garrec, and Frédéric Prima. "Influence of Shape Memory Properties on Sliding Resistance in Fixed Orthodontic Appliances." Materials Science Forum 706-709 (January 2012): 514–19. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.514.

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Tooth movements in an orthodontic treatment are the result of an applied force system, wire-bracket-ligature, and the response of the bone tissue. Starting an orthodontic treatment, it is necessary to exercise a sufficient initial force and then to maintain to obtain a continuous tooth movement. Orthodontic wires, which generate the biomechanical forces, usually transfer forces through brackets to trigger tooth movement. In the case of excessive forces of friction, they are behaving as an opposing force with respect to the movement of the tooth, making it sometimes slower or incontrollable [1].
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Horliana, Ricardo Fidos, Anna Carolina Ratto Tempestini Horliana, Alexandre do Vale Wuo, Flávio Eduardo Guillin Perez, and Jorge Abrão. "Dental Extrusion with Orthodontic Miniscrew Anchorage: A Case Report Describing a Modified Method." Case Reports in Dentistry 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/909314.

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In recent years, the skeletal anchorage through miniscrews has expanded the treatment options in orthodontics (Yamaguchi et al., 2012). We hereby present a modified method for tooth extrusion for cases where crown-lengthening surgery is contraindicated for aesthetic reasons. This modified method uses three orthodontic appliances: a mini-implant, an orthodontic wire, and a bracket. The aim of this case report was to increase the length of the clinical crown of a fractured tooth (tooth 23) by means of an orthodontic extrusion with the modified method of Roth and Diedrich.
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Wepner, Lena, Harald Andreas Färber, Andreas Jaensch, Anna Weber, Florian Heuser, Ludger Keilig, Lamia Singer, and Christoph Peter Bourauel. "In Vitro Ion Release of Wires in Removable Orthodontic Appliances." Materials 14, no. 12 (June 19, 2021): 3402. http://dx.doi.org/10.3390/ma14123402.

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Various orthodontic wire compositions and configurations are present on the market for removable appliances; however, there have still been only few studies focusing on the effect of resin color and additives such as glitter on corrosion of metallic wires under different conditions. Thus, the aim of the study was to compare concentrations of released ions (aluminium, chromium, nickel) in a corrosive medium under three different conditions: non-loaded wires, loaded wires, and non-loaded wires treated with Kukis® cleaning tablets. Six different wires made of three types of steel alloy were embedded in PMMA resin leaving one centimetre of each wire emerging from the resin to come into contact with the corrosive medium. Glitter particles were added to half of the produced test specimens. For the unloaded test series, five specimens of each group were covered in a petri dish with 50 mL of corrosive medium (pH 2.3) following EN-ISO 10271 for seven days at 37 °C. The wires for the mechanically loaded test specimens overlapped the resin by 5 cm and were clamped into a time-switched electric drive for a defined period of time before the samples were taken after a testing time of 7 days. In the third group, unloaded test specimens were transferred from their petri dishes into the prepared Kukis® solution every 24 h before being stored in the corrosive medium. Inductively coupled plasma mass spectrometry (ICP-MS) was used to quantify the specific ions in the corrosive solution. Statistical analysis showed that the mechanical loading of all wires could significantly raise the diffusion of ions into the corrosive medium. The colour of the resin did not affect the concentration of the released ions. The Kukis® cleaning tabs could not lower the corrosion of the tested metals, as some of the wires were corroded even more using the brace cleanser. Glitter-containing test specimens showed significantly higher amounts of aluminium. Mechanical loading as well as the presence of glitter particles in the resin significantly affected ion concentrations.
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Mohammed, Azhar, Crystal Runa Soans, Shivananda S., Yatishkumar S. Joshi, Junaid Junaid, and Surapaneni Tarakaram. "Influence of pH Level and Type of Archwire on the Time Bound Release of Nickel Ions from Orthodontic Appliances - An In Vitro Study." Journal of Evolution of Medical and Dental Sciences 10, no. 29 (July 19, 2021): 2162–65. http://dx.doi.org/10.14260/jemds/2021/442.

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BACKGROUND Orthodontic metallic appliances in the oral cavity are constantly in contact with biological fluids or tissues thereby releasing particulate masses. They can be common causes of contact allergies and should be considered as a critical issue in determining properties of biomaterials. Nickel ions in various forms and compounds have been known to cause carcinogenic, mutagenic, cytotoxic and allergenic reactions. Pattern of metal ions released from different stainless steel orthodontic appliances in vitro could provide valuable information to consider their application in clinical scenarios. The purpose of the present study was to evaluate metal ions released under different ph levels, immersion period time and using different archwire orthodontic appliances. METHODS Orthodontic appliances were constructed consisting of five brackets from central incisor to the second premolar, a buccal tube welded molar band and an archwire that were used as samples. Total of twelve appliances were constructed; using stainless steel, Ni - Ti, and Thermal Ni - Ti wires (N = 4 each). Half of these samples were immersed in artificial saliva at pH 3.5 and the other half were immersed in artificial saliva at pH 6.75. The samples were stored in an incubator at a temperature of 37 degrees Celsius. Saliva samples from these bottles were collected at the end of 1, 7, 14 and 28 days and subjected to spectrophotometric analysis for estimation of nickel content. RESULTS Nickel release was maximum during the first week of immersion from orthodontic appliances comprising of Ni - Ti wires compared to Stainless steel and thermal Ni - Ti. A gradual decline in the nickel release was observed in the subsequent weeks. Ion release was increased by 30 times in the acidic pH medium, as compared to neutral pH conditions. CONCLUSIONS There is a definite release of nickel ions from orthodontic appliances when exposed to oral environment; however, the amounts are much lower than the daily dietary intake and don’t pose risk of toxicity. Care should be taken in patients with nickel hypersensitivity and wires such as beta - titanium or epoxy coated wires can be substituted. As there is an increase in ion release under acidic conditions the patients need to maintain hygienic oral environment thereby limiting corrosion of appliances. KEY WORDS NitiAlloy, Archwires, pH, Hypersensitivity
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Raboud, D. "Simulation of the Superelastic Response of SMA Orthodontic Wires." Journal of Biomechanical Engineering 120, no. 5 (October 1, 1998): 676–85. http://dx.doi.org/10.1115/1.2834761.

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Shape-memory alloys have properties that make them well suited to a variety of applications. One application for which their unique combination of properties (large elastic range, low modulus of elasticity, ability to deliver nearly constant forces over a wide range of deformations) seems ideally suited is for orthodontic retraction appliances where these properties are very desirable. The mechanical response of shape-memory alloys is modeled by a simple constitutive model that captures the essential superelastic behavior of the shape-memory wires. An initial value approach that iteratively converges to the appropriate boundary conditions is utilized to deliver numerical solutions. Qualitative agreement is shown with previous experimental works. The possible benefits of using such wires in an orthodontic retraction appliance are then investigated.
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Dissertations / Theses on the topic "Orthodontic appliances. Orthodontic Wires"

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Bovenizer, Todd S. "An in-vitro investigation of frictional resistance of self-ligating and ceramic brackets when subjected to different ligation methods and tipping angles." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4467.

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Thesis (M.S.)--West Virginia University, 2006.
Title from document title page. Document formatted into pages; contains x, 97 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 69-76).
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Mah, Edward. "Investigation of frictional resistance on orthodontic brackets when subjected to variable moments." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2285.

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Thesis (M.S.)--West Virginia University, 2002.
Title from document title page. Document formatted into pages; contains x, 101 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 90-100).
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O'Leary, Brian C. "Corrosion between orthodontic archwires and bracket couples." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1301.

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Thesis (M.S.)--West Virginia University, 2000.
Title from document title page. Document formatted into pages; contains viii, 94 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 46-49).
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Ali, Khaled Abedela Mahdi. "Application of zirconium-coated titanium wires as restorative orthodontic materials." Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/1532.

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Thesis submitted in fulfillment of the requirements for the degree Magister of Technology: Dental Technology In the Faculty of Health & Wellness Sciences At the Cape Peninsula University of Technology 2013
Orthodontic archwires are made from different alloys. It is now possible to match phases of treatment with orthodontic archwires according to its mechanical properties. On this basis, the titanium molybdenum alloys (TMA) in its beta phase have an excellent combination of strength and flexibility when used as archwires to apply biomechanical forces that affect tooth movement. It has recently gained increased popularity in orthodontic treatment. There are, however, disadvantages associated with the use of orthodontic archwires, such as high surface roughness, which increases friction at the archwire-brackets interface during the sliding process. The surface roughness of dental materials is of utmost importance. Properties such as desirable tensile strengths, load deflection, hardness and low modulus of elasticity and resistance against corrosion & wear determine the area of the contact surface, thereby influencing the friction. The main object of this study was to improve the strength and surface roughness of the beta-titanium orthodontic archwires (β-Ti III) and timolium archwires (TIM), taking into account of retention of the archwires strength. The following tasks were performed. Layers of Zr were deposited on the β-Ti archwires and compared with the archwire strength before and after Zr deposition. The structure of selected archwires and its composition and surface roughness was investigated before and after Zr deposition, using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The force of selected archwires before and after deposition with layers of Zr by Hounsfield deflection testing was studied. Two commercially available orthodontic archwires were used in this study, namely, β-Ti III and TIM orthodontic archwires. The archwires were cut into 25 mm long specimens. In this study, the electron beam-physical vapour deposition (EB-PVD) technique was applied to deposit pure Zr (thicknesses of 5, 10, 25 and 50 nm) on selected archwires and the effects thereof were investigated using AFM, SEM and the Hounsfield deflection test. Results of SEM and AFM analysis and deflection tests showed significant differences between Zr-coated archwires compared with uncoated archwires. Zr-coated archwires (5, 10, 25 and 50 nm depositions) had reduced surface roughness compared with uncoated archwires. A high load deflection rate was exhibited by the coated β-Ti III archwires and a low load deflection rate was exhibited by the coated TIM archwires. There was a difference in load deflection rate between the coated and uncoated archwires. Deposition of 5, 10, 25 and 50 nm Zr on both types of β-Ti orthodontic archwires is recommended for even sliding mechanics due to resulting reduced surface roughness with a good load deflection rate compared with uncoated β-Ti orthodontic archwires. KEYWORDS Surface roughness Zirconium Titanium Deflection test Beta titanium orthodontic archwires Orthodontic archwires alloys Coated materials Electron beam-physical vapour deposition Scanning electron microscopy Atomic force microscopy
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Moresca, Ricardo Cesar. ""Estudo dos efeitos dos lacebacks ativos e passivos na biomecânica da fase de nivelamento utilizando-se a técnica MBT"." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/23/23133/tde-30082006-151221/.

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O objetivo deste trabalho foi estudar os efeitos dos lacebacks ativos e passivos na biomecânica da fase de nivelamento, utilizando-se a técnica MBT. A amostra foi constituída de 29 sujeitos de pesquisa (22 do gênero feminino e 7 do gênero masculino), brasileiros, leucodermas e pardos, portadores de má oclusão de Classe I e com idade média de 15 anos e 5 meses. O tratamento ortodôntico foi planejado com as extrações dos primeiros pré-molares e, durante a fase estudada, foram empregados apenas fios de aço inoxidável (0.014”, 0.016”, 0.018”, 0.020” e 0.019” x 0.025”). Os recursos de ancoragem utilizados para os arcos dentários superior e inferior foram, respectivamente, o aparelho extrabucal tipo IHG e o arco lingual fixo. De acordo com a indicação dos lacebacks, a amostra foi dividida em quatro grupos: grupo I – 14 sujeitos que utilizaram lacebacks ativos no arco dentário superior; grupo II – 9 sujeitos que utilizaram lacebacks passivos no arco dentário superior; grupo III – 19 sujeitos que utilizaram lacebacks ativos no arco dentário inferior e grupo IV – 10 sujeitos que utilizaram lacebacks passivos no arco dentário inferior. Para cada indivíduo da amostra foram tomadas duas telerradiografias laterais, uma ao início e outra ao término da fase de nivelamento, com um intervalo médio de 21 meses. Os dados foram coletados utilizando-se o método cefalométrico computadorizado. Para a análise de erros, o método cefalométrico foi repetido em todos os sujeitos da amostra, pelo mesmo operador, com um intervalo mínimo de 15 dias entre as medidas. Os resultados indicaram que as variações observadas foram compatíveis com as estimativas de erros operacionais em estudos cefalométricos. Após a análise estatística e a interpretação dos resultados, verificou-se que, no grupo I, apenas a coroa do primeiro molar superior sofreu um movimento mesial e que tanto a coroa como a raiz do incisivo central superior apresentaram um movimento em direção lingual. No entanto, as inclinações destes dentes não foram alteradas. No grupo II, o primeiro molar superior se manteve estável e somente a coroa do incisivo central superior se movimentou em direção lingual, produzindo uma rotação horária deste dente. No grupo III, observou-se uma mesialização, tanto da coroa como da raiz, e extrusão do primeiro molar inferior, enquanto a posição do incisivo central inferior permaneceu inalterada. As inclinações destes dentes também não foram alteradas. No grupo IV, verificou-se que nem o primeiro molar inferior nem o incisivo central inferior apresentaram variações no sentido ântero-posterior. Verticalmente, houve extrusão apenas do primeiro molar inferior.
The purpose of this study was to evaluate the effects of active and passive lacebacks in the biomechanics of the leveling phase, using the MBT technique. The sample was composed of 29 Brazilian subjects (22 female and 7 male), Caucasian, with Class I malocclusion and mean age of 15 years and 5 months. The orthodontic treatment was planned with the extraction of the first premolars, and the leveling phase was performed with stainless steel wire only (0.014”, 0.016”, 0.018”, 0.020” e 0.019” x 0.025”). The anchorage control devices used in the upper and lower arches were, respectively, the IHG extraoral appliance and the fixed lingual arch. According to the type of laceback prescription, the sample was divided into four groups: group I – 14 subjects in which active lacebacks were used in the upper arch; group II – 9 subjects in which passive lacebacks were used in the upper arch; group III – 19 subjects in which active lacebacks were used in the lower arch; group IV – 10 subjects in which passive lacebacks were used in the lower arch. For each subject of the sample two lateral cephalometric radiographs were taken: one at the beginning and another at the end of the leveling phase, with a mean interval of 21 months. The data were collected using the resources of computerized cephalometry. To perform the analysis of errors, the cephalometric method was repeated in all subjects of the sample, by the same operator, with a minimum interval of 15 days between the measurements. The results revealed that the observed variations were compatible with the estimates of operational errors in cephalometric studies. After statistical analysis and interpretation of the results, it was observed that in group I, only the crown of the upper first molar presented a mesial movement. As to the upper central incisor, both the crown and the root presented a lingual movement. However, the inclination of these teeth was not affected. In group II, the upper first molar remained stable and only the crown of the upper central incisor moved lingually, leading to a clockwise rotation of this tooth. In group III, a mesial movement of both the crown and the root of the lower first molar was observed, along with its extrusion, whereas the position of the lower central incisor remained unchanged. The inclination of these teeth was not affected either. In group IV, it was observed that neither the lower first molar nor the lower central incisor experienced variations in the anteroposterior sense. Vertically, there only was extrusion of the lower first molar.
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Kuramae, Mayury. "Avaliação in vitro da força de atrito entre braquetes e fios ortodonticos na distalização do canino superior pela Tecnica de Força Direcional Seqüencial de Tweed-Merrifield." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287932.

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Orientador: Maria Beatriz Borges de Araujo Magnani
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
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Resumo: O objetivo desse estudo foi avaliar in vitro a força de atrito gerada na mecânica de distalização do canino superior pelo uso do gancho ¿J¿ na Técnica da Força Direcional Seqüencial de Tweed-Merrifield, de acordo com as variáveis: tipo e marcas dos braquetes; espessura e marcas dos fios; técnica de amarração e análise das superfícies dos fios e braquetes em microscopia eletrônica de varredura, microscopia de força atômica, além de rugosímetro. Foram utilizados 192 braquetes Edgewise de aço inoxidável de dois tipos e duas marcas comerciais e duas marcas de fios ortodônticos (Morelli, Sorocaba, São Paulo, Brasil e GAC, Central Islip, Nova Iorque, EUA) de aço inoxidável em quatro espessuras, amarrados por ligadura metálica e elastomérica em meio seco e à temperatura ambiente. Foi utilizada uma placa de acrílico retangular simulando um segmento de aparelho fixo composto por quatro braquetes duplos. Cada fio a ser testado teve suas extremidades dobradas justas aos braquetes terminais para que não deslizasse na canaleta e foi amarrado aos braquetes com ligadura de aço inoxidável. A placa de acrílico juntamente com o segmento do fio montado foi fixada no mordente da base da máquina de ensaio universal Instron 4411 (Instron Ltd., High Wycombe, Bucks, Reino Unido) de maneira a ficar posicionada em 45° em relação ao solo, o que foi realizado com o auxílio do esquadro, simulando a angulação do aparelho extrabucal gancho ¿J¿ com o plano oclusal, durante a mecânica de distalização do canino superior. O braquete foi puxado a velocidade de 0,5mm/minuto através do segmento do fio por uma distância de 5mm. Os testes foram repetidos três vezes, trocando-se a combinação braquete/fio a ser testada para cada três grupos. Os valores médios foram obtidos e a força de atrito foi calculada. Após o recorte das canaletas dos braquetes e limpeza dos fios e braquetes, esses foram analisados em microscopia eletrônica de varredura e de força atômica. Além disso, sobre a superfície dos fios foi efetuada a leitura da rugosidade de superfície em micrometros. Os dados foram submetidos à Análise de Variância e ao teste de Tukey (5%). Concluiu-se que: os braquetes duplos proporcionaram maior atrito do que os braquetes simples; os braquetes e fios da marca Morelli proporcionaram maior atrito do que os da GAC; quanto maior a espessura dos fios, maior foi o atrito; a técnica de amarração que gerou maior atrito foi com ligadura elástica quando comparada à ligadura de aço inoxidável; a rugosidade do fio diminuiu com o uso em alguns casos e os fios da marca GAC apresentaram qualitativamente lisura de superfície superior ao da marca Morelli
Abstract: This study aimed to evaluate in vitro frictional forces that result from upper cusp distalization due to using the J-Hook, according to the Tweed-Merrifield Sequential Directional Force technique; variables were: bracket type and manufacturer, wire diameter and manufacturer, ligation method and microscopic surface analysis of brackets and wires. One hundred and ninety-two stainless steel Edgewise brackets, of two different types and manufacturers were used, ligated to orthodontic wires of four diameters and two manufacturers (Morelli, Sorocaba, São Paulo, Brazil and GAC, Central Islip, New York, USA) by means of metallic and elastomeric ligatures, at extraoral environment and ambient temperature. A rectangular acrylic plate was manufactured, imitating a fixed appliance section of four double brackets. The ends of each wire were tightly bended to the terminal brackets, in order to eliminate sliding, and were fixed to the brackets by stainless steel ligatures. Each sample, comprising the acrylic plate, as well as the bracket and wire section, was fixed unto a Instron 4411 testing machine (Instron Ltd., High Wycombe, Bucks, United Kingdom), so that each of them was at a 45º inclination, relative to the horizontal plane, thus imitating the extraoral position of the J-hook, relative to the occlusal plane, during upper cusp distalization. The bracket was pulled for 5mm sliding at a speed of 0.5mm/minute. Tests were performed other three times, each for a different bracket/wire combination, over the three groups. The mean values were obtained and frictional forces were calculated. After cutting bracket slots and cleaning wires and brackets, these were analyzed by scanning electron and atomic force microscopy. Also, surface rugosity, in micrometers, was evaluated. Data underwent Variance analysis and Tukey test (5%). Final observations were: twin brackets provide greater frictional forces; brackets and wires manufactured by Morelli showed greater frictional forces than those by GAC; the larger the wire diameter, the greater the frictional forces; elastomeric ligatures resulted in greater friction than stainless steel ligatures; usage made the wires less roughness just in some cases, and GAC manufactured wires presented greater surface smoothness than those by Morelli
Doutorado
Ortodontia
Doutor em Radiologia Odontológica
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Karl, Paul James. "The comparison of centric relation records obtained with and without the use of an anterior deprogrammer appliance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq21090.pdf.

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Michelberger, David James. "An investigation of the friction, wear and corrosion properties of orthodontic appliances." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ40088.pdf.

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Roberts, Scott Cameron. "Automated manufacturing of orthodontic appliances." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30057.

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This thesis presents a computer controlled system that partially automates the production of upper-mouth orthodontic appliances. The machine performs the deposition and curing required to manufacture the acrylic portion of the appliance. Under this new process, the operator places the orthodontic wires and expansion screws on the surface of the dental cast, secures the cast onto the machine and describes the desired shape of the appliance through a graphical user interface. The machine then applies and cures the acrylic to form the finished appliance. Only minimal grinding and buffing is required. The system consists of a robotic device that includes a two-axis platform for manipulating dental casts; and a two-axis gantry for positioning an acrylic pump, ultraviolet lamp, laser and rotating mirror system, and a camera. The laser and camera are part of a range vision system for mapping the surface of the dental cast to obtain elevation and surface normal data. The pump and lamp are used to deposit and cure light activated liquid acrylic. The rotary table system provides orientation for the dental cast to permit surface mapping and acrylic deposition and curing. The table is able to orient the dental cast to avoid movement of the liquid acrylic on the surface of the cast before curing takes place. The machine software provides tool-workpiece collision avoidance, process planning, and machine function and motion control. Several tests, including the complete production of orthodontic appliances, have been performed with the system. The average time for surface mapping of a dental cast is 11.5 minutes and the average time for acrylic deposition and curing is 54.3 minutes.
Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate
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Bales, Jeffrey M. "Deformation of reinforced polycarbonate orthodontic brackets stressed by a labiolingual moment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0001/MQ32050.pdf.

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Books on the topic "Orthodontic appliances. Orthodontic Wires"

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Nakajima, Eiichirō. Manual of wire bending techniques. Chicago: Quintessence Pub., Co., 2010.

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Andrews, Lawrence F. Straight wire: The concept and appliance. San Diego, CA: L.A. Wells, 1989.

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Andrews, Lawrence F. Straight wire: The concept and appliance. San Diego: L.A. Weels, 1989.

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Isaacson, Keith Geoffrey. Functional orthodontic appliances. Oxford: Blackwell Scientific, 1990.

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Fleming, Padhraig, and Robert Lee. Orthodontic Functional Appliances. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119004332.

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Fleming, Padhraig, and Jadbinder Seehra. Fixed Orthodontic Appliances. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12165-5.

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T, Reed R., and Muir J. D, eds. Removable orthodontic appliances. Oxford: Wright, 2002.

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Mizrahi, Eliakim. Orthodontic Pearls. London: Taylor & Francis Group Plc, 2004.

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Luther, Friedy. Removable orthodontic appliances and retainers: Principles of design and use. Chichester, West Sussex, UK: Wiley-Blackwell, 2013.

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Luther, Friedy. Removable orthodontic appliances and retainers: Principles of design and use. Chichester, West Sussex, UK: Wiley-Blackwell, 2013.

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Book chapters on the topic "Orthodontic appliances. Orthodontic Wires"

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Gill, Daljit S., and Farhad B. Naini. "The Straight Wire Appliance." In Orthodontics: Principles and Practice, 294–99. West Sussex, UK: John Wiley & Sons, Ltd,., 2013. http://dx.doi.org/10.1002/9781118785041.ch31.

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Mossey, Peter A., and Colin Larmour. "The role of genetics and environmental factors on the condyle in mandibular growth." In Orthodontic Functional Appliances, 21–27. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119004332.ch3.

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Miles, Peter. "Rigid fixed functional appliances." In Orthodontic Functional Appliances, 70–92. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119004332.ch6.

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Miles, Peter. "Flexible fixed functional appliances." In Orthodontic Functional Appliances, 93–101. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119004332.ch7.

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DiBiase, Andrew. "The use of functional appliances in the correction of Class III malocclusion." In Orthodontic Functional Appliances, 119–26. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119004332.ch9.

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Staley, Robert N., and Neil T. Reske. "How Orthodontic Appliances Move Teeth." In Essentials of Orthodontics Diagnosis and Treatment, 213–27. West Sussex, UK: John Wiley & Sons, Ltd., 2013. http://dx.doi.org/10.1002/9781118853719.ch12.

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Chaushu, Stella, and Gabriel Chaushu. "Lingual Appliances, Implants and Impacted Teeth." In Orthodontic Treatment of Impacted Teeth, 283–92. West Sussex, UK: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118709641.ch10.

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Erverdi, Nejat, and Melih Motro. "Archwise Distraction on Fixed Orthodontic Appliances." In Alveolar Distraction Osteogenesis, 63–70. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07707-9_6.

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Erverdi, Nejat, and Melih Motro. "Archwise Distraction on Fixed Orthodontic Appliances." In Alveolar Distraction Osteogenesis, 73–80. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49781-1_7.

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Filippi, Stefano, Luca Grigolato, and Gianpaolo Savio. "UX Concerns in Developing Functional Orthodontic Appliances." In Lecture Notes in Computer Science, 229–41. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49757-6_16.

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Conference papers on the topic "Orthodontic appliances. Orthodontic Wires"

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Lindawati, Yumi, Erliera Sufarnap, and Wihda Munawwarah. "Effects of Fixed Orthodontic Appliances on Salivary Conditions." In International Conference of Science, Technology, Engineering, Environmental and Ramification Researches. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0010075804910494.

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Tilli, Jacopo, Alessandro Paoli, Armando V. Razionale, and Sandro Barone. "A Novel Methodology for the Creation of Customized Eruption Guidance Appliances." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-47232.

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Within the orthodontic field, malocclusion problems are usually treated by using different types of appliances. In particular, Eruption Guidance Appliances (EGAs) are recommended for early orthodontic treatment or prevention of malocclusion problems. The traditional approach with EGAs is based on the use of standard prefabricated appliances. Experts in the orthodontic field believe that the customization of the EGAs would strongly enhance the results of malocclusion treatments. This paper presents an innovative methodology for the design and manufacturing of fully customized EGAs. The methodology is based on an extensive integration between traditional orthodontic procedures with advanced computer aided design processes. The methodology moves from the digitalization of the plaster models obtained by optical scanning techniques. The patient morphology is then exploited, under dental practitioner supervision, for the design of the appliance geometry through CAD modeling tools. Medical guided assessment is required throughout the most of the data elaboration processes, in order to design the EGAs accordingly to the patient’s clinical conditions. Low-pressure injection molds for the physical manufacturing of the appliances are then 3D printed by using rapid prototyping techniques. The proposed methodology allows the production of patient customized appliances guaranteeing low cost manufacturing and high quality standards, similar to those typically obtained by in series productions. Moreover, the presented approach offers a high integration level with numerical and finite element methods, which can be used for evaluating the stress applied on the EGA, thus allowing the reinforcement of the appliance prior its manufacturing.
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Khonsari, S. K., N. Towhidi, M. Siadat Cheraghi, S. R. Allahkaram, and T. Rabizadeh. "Pt nanoparticles coating on orthodontic Ni-Ti wires using pulse current." In 2011 IEEE Nanotechnology Materials and Devices Conference (NMDC 2011). IEEE, 2011. http://dx.doi.org/10.1109/nmdc.2011.6155278.

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Benjamin, Ellis, Ashleigh Augello, and Earl Benjamin. "Designing Caspase-1 kinase inhibitors to control acute inflammation of Orthodontic Appliances." In The 17th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2013. http://dx.doi.org/10.3390/ecsoc-17-e019.

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Kirana, Siti Salsabila, and Elza Ibrahim Auerkari. "Genotoxicity of NiTi orthodontic wires induced by the release of metal ions." In THE 5TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, AND MEDICAL DEVICES: Proceedings of the 5th International Symposium of Biomedical Engineering (ISBE) 2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0047255.

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Zegan, Georgeta, Daniela Anistoroaei, Alina Sodor, and Cristina Gena Dascalu. "Structural changes of the human saliva chemical composition at wearers of orthodontic appliances." In 2017 E-Health and Bioengineering Conference (EHB). IEEE, 2017. http://dx.doi.org/10.1109/ehb.2017.7995403.

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Petrov, Valeri, Laura Andreeva, George Petkov, Mirella Gueorguieva, Angelina Stoyanova-Ivanova, and Stiliyan Kalitzin. "Modelling of nickel release dynamics for three types of nickel-titan orthodontic wires." In the 2nd International Conference. New York, New York, USA: ACM Press, 2019. http://dx.doi.org/10.1145/3309772.3309792.

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Li, Shuning, and Jie Chen. "Quantification of Tooth Displacement From Dental Casts." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-192058.

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In orthodontics, patients are treated by moving teeth to improve esthetics and occlusion. Tooth displacement is one of the most important outcomes, and can be used to evaluate treatment strategies and orthodontic appliances. Thus, an accurate and reliable method for quantification of the three dimensional (3D) tooth displacements is of high interest [1].
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Savignano, Roberto, Sandro Barone, Alessandro Paoli, and Armando V. Razionale. "FEM Analysis of Bone-Ligaments-Tooth Models for Biomechanical Simulation of Individual Orthodontic Devices." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34912.

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In the last decades, research in the orthodontic field has focused on the development of more comfortable and aesthetic appliances such as thermoformed aligners. Aligners have been used in orthodontics since the mid 20-century. Nonetheless, there is still not enough knowledge about how they interact with teeth. This paper is focused on the development of a Finite Element Method (FEM) model to be used in the optimization process of geometrical attributes of removable aligners. The presented method integrates Cone Beam Computed Tomography (CBCT) data and optical data in order to obtain a customized model of the dental structures, which include both crown and root shapes. The digital simulation has been focused on analyzing the behavior of three upper frontal teeth. Moreover, the analyses have been carried out by using different aligners’ thicknesses with the support of composite structures polymerized on teeth surfaces while simulating a 2 degrees rotation of an upper central incisor.
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Konh, Bardia. "Finite Element Studies of Triple Actuation of Shape Memory Alloy Wires for Surgical Tools." In 2018 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dmd2018-6857.

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Since the early discovery in 1951 [1], shape memory alloys (SMAs) have been used in design and development of several innovative engineering systems. SMAs’ unique characteristics have introduced unconventional alternatives in design and development of advanced devices. SMA’s field of applications has covered many areas from aerospace to auto industries, and medical devices [2]. During the past couple of decades, scientists have suggested material models to predict the SMA’s shape memory effect (SME) and its superelastic behavior. The superelastic characteristic of SMAs (its capability to exhibit a large recoverable strain) has been widely used to develop innovative products including biomedical implants such as stents, artificial heart valves, orthodontic wires, frames of indestructible spectacles, etc. However, its actuation capabilities, known as SME, hasn’t been thoroughly expanded. The number of products privileging from SMA’s SME behavior has been very limited. The reason relies on the SMA’s complex material properties that depend on the stress, strain and temperature at every stage of actuation as well as the material’s processing and the thermomechanical loading history.
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