Academic literature on the topic 'Arch width'

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Journal articles on the topic "Arch width"

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Shahid, Fazal, Mohammad Khursheed Alam, and Mohd Fadhli Khamis. "Maxillary and mandibular anterior crown width/height ratio and its relation to various arch perimeters, arch length, and arch width groups." European Journal of Dentistry 09, no. 04 (October 2015): 490–99. http://dx.doi.org/10.4103/1305-7456.172620.

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ABSTRACT Objective: To investigate the maxillary and mandibular anterior crown width/height ratio and its relation to various arch perimeters, arch length, and arch width (intercanine, interpremolar, and intermolar) groups. Materials and Methods: The calculated sample size was 128 subjects. The crown width/height, arch length, arch perimeter, and arch width of the maxilla and mandible were obtained via digital calliper (Mitutoyo, Japan). A total of 4325 variables were measured. The sex differences in the crown width and height were evaluated. Analysis of variance was applied to evaluate the differences between arch length, arch perimeter, and arch width groups. Results: Males had significantly larger mean values for crown width and height than females (P ≤ 0.05) for maxillary and mandibular arches, both. There were no significant differences observed for the crown width/height ratio in various arch length, arch perimeter, and arch width (intercanine, interpremolar, and intermolar) groups (P ≤ 0.05) in maxilla and mandible, both. Conclusions: Our results indicate sexual disparities in the crown width and height. Crown width and height has no significant relation to various arch length, arch perimeter, and arch width groups of maxilla and mandible. Thus, it may be helpful for orthodontic and prosthodontic case investigations and comprehensive management.
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Gibbs, S. L., and N. P. Hunt. "Functional Appliances and Arch Width." British Journal of Orthodontics 19, no. 2 (May 1992): 117–25. http://dx.doi.org/10.1179/bjo.19.2.117.

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A retrospective study was undertaken using treated functional appliance cases. The groups involved 27 Andresen, 19 Bionator, and 23 Fränkel cases. The reflex metrograph was used to measure arch width from study models at the start of treatment, end of treatment including retention, and at least 1 year post-treatment. The effects of each appliance on arch width are compared during and after treatment.
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Selmani, Mimoza, and Julijana Gjorgova. "Relationship among Lower Arch Length, Arch Width and Arch Perimeter in Crowding and Non-Crowding Groups." Balkan Journal of Dental Medicine 19, no. 1 (March 1, 2015): 8–12. http://dx.doi.org/10.1515/bjdm-2015-0027.

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SUMMARYCrowding is one of the causes of class I malocclusion. The purpose of the present study was to examine the relationship between arch length, arch width and arch perimeter in crowded and non-crowded arches, as well as to made comparison of the right and left sides between them and to find out the contributing factor in lower arch crowding. The study groups consisted of 60 subjects aged 16 to 21 years. First group consisted of 30 pairs of dental study models with class I normal occlusion. The second group consisted of 30 pairs of study models with class I crowding. Measurements of arch length and width were made as defined by Lavelle and Foster, using Korkhaus callipers. Arch perimeter was measured by Lundstrom method’s using manual calliper with sharp points. Differences between these measurements were made by Mann-Whitney U test (Z/U).According to our study, the arch length and arch perimeter were not associated factors in contribution to lower arch crowding. In association of contributed factors on the lower arch crowding, we could mention the width of the arch, because the differences between the two groups was significantly different.
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Kareem, Fadil Abdullah, Aras Maruf Rauf, Arass Jalal Noori, and Trefa M. Ali Mahmood. "Prediction of the Dental Arch Perimeter in a Kurdish Sample in Sulaimani City Based on Other Linear Dental Arch Measurements as a Malocclusion Preventive Measure." Computational and Mathematical Methods in Medicine 2020 (December 21, 2020): 1–6. http://dx.doi.org/10.1155/2020/8869996.

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The current study aimed to find a prediction equation to estimate the arch perimeter (AP) depending on various arch dimensions including intercanine width (ICW), intermolar width (IMW), interpremolar width (IPMW), and arch length (AL) in a sample of the Kurdish population in Sulaimani City. The study sample was 100 pairs of preorthodontic dental casts. Calculations of dental arch dimensions and perimeter were performed by a digital vernier. Statistical analysis was performed via using the SPSS version 25 software. The developed prediction equation for the upper arch was Y = + 1.3 × arch length + 1 × intermolar width , whereas the equation for the lower arch was Y = + 0.9 × intermolar width + 0.92 × intercanine width . Paired t -test revealed no statistical difference between predicted and real arch perimeters. Two separate prediction equations for upper and lower arches were developed based on the arch length (AL) and intermolar width (IMW) for the maxillary arch, intermolar (IMW), and inter canine widths (ICW) for the lower arch. The developed equations could have further beneficial impacts on orthodontic diagnosis and treatment planning.
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Hnat, William P., Stanley Braun, Antony Chinhara, and Harry L. Legan. "The relationship of arch length to alterations in dental arch width." American Journal of Orthodontics and Dentofacial Orthopedics 118, no. 2 (August 2000): 184–88. http://dx.doi.org/10.1067/mod.2000.105570.

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Lee, Robert T. "Arch width and form: A review." American Journal of Orthodontics and Dentofacial Orthopedics 115, no. 3 (March 1999): 305–13. http://dx.doi.org/10.1016/s0889-5406(99)70334-3.

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Hashim, Hayder Abdullah, and Sarah AL-Ghamdi. "Tooth Width and Arch Dimensions in Normal and Malocclusion Samples: An Odontometric Study." Journal of Contemporary Dental Practice 6, no. 2 (2005): 36–51. http://dx.doi.org/10.5005/jcdp-6-2-36.

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Abstract The purpose of this study was to establish tooth width and arch dimensions in normal and malocclusion samples and to compare tooth width and arch dimensions between males and females in normal and malocclusion samples. A total of 120 pairs of orthodontic study casts were included in the study. An electronic digital caliper was used for the measurements. Descriptive statistics and the t-test were used for the statistical analysis of the data. Tooth width and arch dimensions were established in normal and malocclusion in the present study. Significant differences were found in tooth width between normal and malocclusion samples. However, no significant difference was observed in arch dimensions. Furthermore, there was statistical significant difference in tooth width between males and females where the males showed higher mean values. The same was true when arch dimensions were compared. The results of the current investigation are of great value to the anthropologist as well as to the orthodontist in understanding dimensional arch criteria and orthodontic arch wire selection. Furthermore, it helps the prosthodontist in the selection of the correct shape and size of stock impression trays and of suitable molds of artificial teeth for fixed and removable prostheses. Citation Hashim HA, Al-Ghamdi SAF. Tooth Width and Arch Dimensions in Normal and Malocclusion Samples: An Odontometric Study. J Contemp Dent Pract 2005 May;(6)2:036-051.
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Sahin, Hakan, and Paul Stark. "Diagnostic Utility of Chest Radiography in Predicting Long-Standing Systemic Arterial Hypertension." AORTA 05, no. 06 (December 2017): 168–72. http://dx.doi.org/10.12945/j.aorta.2017.17.092.

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Purpose: To investigate the association between aortic arch width on frontal chest radiography and systemic hypertension. Methods: A total of 200 consecutive patients were included. Relationships between aortic arch width measurement on chest radiography and blood pressure measurement were investigated using Student’s t -tests and Fisher’s exact tests. Results: Twenty-five patients were normotensive (< 130/90 mmHg), and 175 were hypertensive. Using cut-off values, 136 patients had an aortic arch width ≥ 3.5 cm, and 65 had an aortic arch width ≥ 4 cm. We found a significant relationship between aortic arch width and hypertension (p < 0.001) as well between aortic arch width cut-off values of 3.5 cm and 4 cm and hypertension (p < 0.001 and p < 0.005, respectively). An aortic arch width ≥ 3.5 cm was associated with a positive likelihood ratio (LR) of 2.3, negative LR of 0.39, sensitivity of 73, specificity of 68, positive predictive value of 94, negative predictive value of 26.6, pretest odds of 7, posttest odds of 16, and posttest probability of 94%. An aortic arch width ≥ 4 cm was associated with a positive LR of 4.50, negative LR of 0.70, sensitivity of 36, specificity of 92, positive predictive value of 97, negative predictive value of 17, pretest odds of 7, posttest odds of 31.5, and posttest probability of 97%. Conclusions: Aortic arch width measurement on chest radiography can be used to predict the presence of long-standing systemic arterial hypertension.
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Huang, Chiung-Shing, Hsin-Chung Cheng, Yu-Ray Chen, and M. Samuel Noordhoff. "Maxillary Dental Arch Affected by Different Sleep Positions in Unilateral Complete Cleft Lip and Palate Infants." Cleft Palate-Craniofacial Journal 31, no. 3 (May 1994): 179–84. http://dx.doi.org/10.1597/1545-1569_1994_031_0179_mdaabd_2.3.co_2.

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The development of the dental arch is well designed for adaptive and compensatory growth. In this study, the relationship between the sleep position and dental arch development was Investigated. A group of 42 infants with unilateral complete cleft lip and palate with either prone (16) or supine (26) sleep position were seen in the craniofacial center. All infants were less than 1 month of age at the initial visit. Dental impressions of the maxillary arch were taken at the initial visit and just before cheiloplasty. Ten arch dimensions were measured in each dental cast and the longitudinal change in each dimension was compared between the prone sleep group and the supine sleep group. Statistically significant changes were detected in the growth rate of the following dimensions: intercanine width, intertuberosity width, alveolar cleft width, anterior cleft width, and posterior cleft width. This study indicated that sleep position affected maxillary arch development. Infants sleeping in the prone sleep position tended to have narrower arch width and cleft width.
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Heidbuchel, Kiki L. W. M., Anne M. Kuijpers-Jagtman, Gem J. C. Kramer, and Birte Prahl-Andersen. "Maxillary Arch Dimensions in Bilateral Cleft Lip and Palate from Birth until Four Years of Age in Boys." Cleft Palate-Craniofacial Journal 35, no. 3 (May 1998): 233–39. http://dx.doi.org/10.1597/1545-1569_1998_035_0233_madibc_2.3.co_2.

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Objective To describe the development of maxillary arch dimensions in children with bilateral cleft lip and palate (BCLP) during the first 4 years of life and to compare it with that in noncleft children. Design This was a retrospective, mixed-longitudinal study. Setting The study was conducted at the Cleft Palate Center of the University Hospital of Nijmegen. Subjects The sample consisted of 26 boys with BCLP who were born between 1976 and 1990 and treated at the University Hospital of Nijmegen. Data for a control group of 34 noncleft boys were collected at the University Hospital of Amsterdam. Method Palatal arch dimensions were digitized on dental casts. A comparison between BCLP and noncleft dimensions was made at fixed time intervals. Results At birth, anterior and posterior arch widths as well as arch depths were significantly larger in children with BCLP. After 7 months (lip closure), anterior arch width and arch depth diminished considerably in the cleft group. After 12 months (palatoplasty), a slight decrease in posterior arch width was observed, and arch depths showed slight catch-up growth. At 4 years of age, anterior arch width was significantly narrower and anterior arch depth was shorter in children with BCLP than in control subjects. Posterior arch width was significantly wider. Conclusions During the first 4 years of life, maxillary arch dimensions in children with BCLP show a unique development that is significantly different from that in noncleft children.
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Dissertations / Theses on the topic "Arch width"

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MacKriel, Earl Ari. "Changes in arch dimensions after extraction and non-extraction orthodontic treatment." Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_4464_1260523586.

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The aim of this study was to determine whether there are changes in the interdental arch widths and arch lengths of the mandibular and maxillary arches during nonextraction and extraction orthodontic treatment. The records of 78 patients treated by one orthodontist were used for this study. Three treatment groups were selected: a nonextraction group (Group NE), a group treated with extraction of maxillary and mandibular first premolars (Group 44), and a group treated with extraction of maxillary first premolars and mandibular second premolars (Group 45). The arch width measurements were measured in the inter-canine, inter-premolar and inter-molar areas. The arch length was measured as the sum of the left and right distances from mesial anatomic contact points of the first permanent molars to the contact point of the central incisors or to the midpoint between the central incisor contacts, if spaced.

Statistical analysis included descriptive statistics of the data, analysis of the correlation matrices, Wilcoxon Signed Rank tests and Kruskal-Wallis tests of the changes which occurred during treatment. The intercanine widths in the mandible and maxilla increased during treatment in all three groups, with the extraction groups showing a greater increase than Group NE (p<
0.05). In Group NE the mandibular arch length increased (p<
0.05), while the maxillary arch length remained essentially unchanged. Both extraction groups showed decreases in arch length in the dentitions (p<
0.05), with greater decreases occurring in the maxilla. The difference in arch length change between the two extraction groups was not significant (p>
0.10). The inter-canine arch width increased in all three treatment groups, more so in the two extraction groups. From this it is evident that extraction treatment does not necessarily lead to narrowing of the dental arches in the canine region. The inter-second premolar arch width decreased in both extraction groups. Non-extraction treatment resulted in an increase in the inter-premolar and inter-molar arch widths.

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Raan, F. J. du. "Using a mathematical model to determine dental arch- perimeter in class ii patients presenting at UWC orthodontic clinics." University of the Western Cape, 2021. http://hdl.handle.net/11394/7976.

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Doctor Scientiae - DSc
Determining arch perimeter is of importance in both a clinical setting, where it is used to determine space requirements, as well as in an epidemiological setting where it is used to describe large populations. Physical measurement of arch perimeter is time consuming and may be prone to operator errors when done on study casts and even more so in a clinical situation. The use of a simple mathematical model to predict arch perimeter, using a few measurements that can be done easily and reliably, would be of great use to the practitioner.
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Bachtiar, Mulyani Dalidjan. "An assessment of Pont's Index to predict dental arch width in human populations /." Title page, contents and summary only, 1990. http://web4.library.adelaide.edu.au/theses/09DM/09dmb124.pdf.

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Aynaciyan, Raffi J. "Rapid maxillary expansion long-term hard tissue profile and dental arch width changes /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0025/MQ30661.pdf.

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Katz, Robert Adam. "The Long Term Stability of Mandibular Arch Length and Width Changes Following Rapid Maxillary Expansion." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1383819575.

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Sacksteder, James Martin. "Dental Arch Width and Length Parameters in Patients with Obstructive Sleep Apnea vs Patients Without: A Pilot Study." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1490040724141358.

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Suga, Selma Sano. "Avaliação do posicionamento de caninos superiores permanentes na fase da dentadura mista em relação à largura do arco dentário e ao espaço na região anterior." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/23/23132/tde-17092008-100018/.

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Este estudo avaliou o posicionamento de caninos superiores permanentes em relação à largura do arco dentário superior e ao espaço na região anterior em pacientes na fase da dentadura mista. Foram analisados radiografias panorâmicas e modelos de estudo pré-tratamento de pacientes sem caninos deslocados (n = 68; 34 do gênero masculino; 34 do gênero feminino). A amostra foi dividida em idade e gênero. A largura do arco dentário e o espaço na região anterior entre os incisivos permanentes foram medidos. A posição e a inclinação do canino na radiografia panorâmica foram avaliadas em relação à linha mediana. Os resultados deste estudo mostram que não houve diferenças no posicionamento dos caninos permanentes em relação às variáveis analisadas. A média da angulação do canino superior em relação à linha mediana foi 6,2o e 10o para o gênero feminino e 9,2o e 11o para o masculino, respectivamente para o lado direito e esquerdo.
This study investigated the correlation between maxillary dental arch width, anterior space and the position of canines in patients during the mixed-dentition stage. Pretreatment Panoramic radiographs and dental casts were evaluated of randomly selected patients in the mixed dentition without maxillary canines displaced (n = 68; male, 34; female, 34). This sample was matched according to sex and age. Arch widths between the maxillary canines deciduous and anterior space between permanent incisors were measured and recorded. The position and inclination of canine on panoramic radiography was investigated. The results of this study showed that there are similarities in the position of the permanent canines in all cases and in both gender. The average of the canine\'s angulation to the mid-sagital plane was 6,2o and 10o for female and 9,2o and 11o for male, respectively to the right and left side.
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Walker, Becky J. "A comparison of mandibular arch width changes using two different bracket systems : a randomised controlled clinical trial." Thesis, University of Bristol, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.681744.

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AIMS: The primary aim was to assess and compare mandibular arch width changes between self-ligating and non-self-ligating brackets using superelastic nickel titanium archwires. DESIGN: Single-centre prospective randomised controlled clinical trial. SETTING: Orthodontic department, Queen Alexandra Hospital, Portsmouth. PARTICIPANTS: 92 consecutive patients seen in the department who fulfilled the selection criteria. INTERVENTIONS: All patients were treated with upper and lower fixed appliances on a nonextraction basis. Patients were randomly assigned to Damon Q self-ligating or Orthos non-selfligating brackets in a ratio 1:1. Both groups received the same archwire sequence. Impressions were taken pre-treatment (TO) and 8 weeks after placement of the following archwires: 0.014// CuNiTi (TlL 0.014// x 0.025// CuNiTi (T2L 0.018// x 0.025// CuNiTi (T3). OUTCOME MEASURES: Intercanine, first and second interpremolar and intermolar widths were measured at all timepoints using digital callipers and a three-dimensional laser scanner. Perceived pain and anxiety levels were measured using questionnaires. Any breakages occurring during the study were recorded. RESULTS: There were statistically significant differences between Damon Q and Orthos in lower intercanine width at Tl (calliper p=0.031; laser p=O.017L T2 (calliper p=0.006; laser p=O.027) and T3 (calliper p=0.002; laser p=O.OOl); lower second interpremolar width at T3 (calliper p=0.009; laser p=0.009) and lower intermolar width at T3 (laser p=0.036). Orthos had the higher value for all of these differences. No findings were considered clinically significant. Pain scores were significantly higher for Orthos at TO, significantly higher for Damon at Tl, with no significant difference at T2. There was no significant difference in anxiety scores between the 2 groups. A record of breakages showed that Damon had more IIArchwire out// and Orthos 110 ring// failures than would be expected. CONCLUSION: There is no clinically significant difference between Damon Q self-ligating and Orthos non-self-ligating brackets in arch width changes when using superelastic nickel titanium archwires.
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Bezerra, Valeria Matos. "Alterações das dimensões dos arcos dentários e das inclinações dos incisivos produzidas pelo Sistema Damon." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/25/25144/tde-05042013-102219/.

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PROPOSIÇÃO: O objetivo deste trabalho foi descrever as alterações das dimensões dos arcos dentários e das inclinações dos incisivos produzidas pelo Sistema Damon, durante a fase de alinhamento e nivelamento. Outro objetivo foi verificar a correlação destas alterações com o padrão de crescimento dos indivíduos. MATERIAL E MÉTODOS: modelos de estudo, telerradiografias convencionais e telerradiografias reconstruídas a partir de tomografias computadorizadas cone-beam de 22 casos tratados com o bráquetes Damon 3MXTM foram avaliados durante a fase de alinhamento e nivelamento. Os modelos de estudo foram obtidos ao início do tratamento (T0), após a primeira troca de fio (T1) e na inserção do fio de aço 0,019 x 0,025 (T2). Foram verificados os comprimentos de arco e as dimensões transversais nas regiões de caninos, primeiros e segundos pré-molares e primeiros molares mensuradas a partir das pontas de cúspides e margens gengivais linguais dos dentes, a cada etapa. Nas telerradiografias foram verificadas as alterações das inclinações dos incisivos inferiores e superiores, bem como o padrão de crescimento dos indivíduos. RESULTADOS: os comprimentos dos arcos e todas as distâncias transversais apresentaram aumentos significantes, com exceção da distância intercervical dos caninos superiores; houve aumento significante das inclinações vestibulares dos incisivos superiores e inferiores; o padrão de crescimento dos pacientes apresentou correlação significante com os aumentos transversais na região de pré-molares inferiores. CONCLUSÕES: o alinhamento e nivelamento de casos tratados sem extrações com o uso do Sistema Damon resultou no aumento significante das dimensões dos arcos dentários e das inclinações dos incisivos para vestibular.
OBJECTIVE: This study aimed to evaluate the dental arch widths and incisor torque changes produced by the Damon System during leveling and alignment. Other objective was to verify the correlation between these changes and the growth pattern. MATHERIAL AND METHODS: study casts and lateral radiographs derived from cone-beam computed tomographies of 22 subjects treated with Damon 3MXTM brackets were evaluated. The study casts were obtained at the start of treatment (T0), the first archwire change (T1), and the placement of the final 0,019 x 0,025-in archwire (T2). Arch depth and widths (intercanine, interpremolar and intermolar) were assessed at each stage. The incisor torques changes and the growth pattern were measured on the cephalometric records at T0 and T2. RESULTS: There was significant increase of the arch depths and lateral expansion of the arches for all measures, except for the intercervical of maxillary canines. The maxillary and mandibular incisors were significantly tipped labially; the growth pattern showed significant correlation with the lateral increases in lower premolars region. CONCLUSIONS: nonextraction cases treated with Damon System show significant increases in arch dimensions and incisors proclination.
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Seon, Hongsun 1965. "Electrode erosion and arc stability in transferred arcs with graphite electrodes." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=108637.

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Arc stability and erosion behavior were studied on a hollow graphite DC cathode in an argon atmosphere at atmospheric pressure. It was found that the arc stability is associated with the electron emission mode transition of the cathode operation. Estimation of current densities, SEM pictures, Fast Fourier Transform (FFT) of total voltage, and measurement of cathode surface temperature supported this. Stable arcs are in the thermionic emission regime while unstable arcs in the thermofield emission regime. Higher argon gas flow rate is believed to cause the shift of the mode from the thermofield emission to the thermionic emission by increasing the arc root temperature through steepening the thermal gradient at the arc root and increasing ionization phenomena inside the arc. Sharp cathode tip geometry usually leads to the thermionic emission while a rounded tip geometry encourages the thermofield emission. For the unstable arcs, the high voltage fluctuation resulted from the jumping of the arc root between different cathode spots and changes in the arc length. In the stable arcs, however, the voltage was almost constant because of the absence of arc jumping. The standard deviation of the voltage was used as the arc stability indicator and was less than 3 V for the stable arc in this transferred arc system.
The erosion rate of the cathode in this work ranged from 0.41 to 2.61 mug/C. At 150 A runs the arc stability strongly influenced the erosion rate; as the arc stability increased, the erosion rate decreased. Higher currents runs (300 and 400 A), however, showed the opposite trend because of the carbon vapor redeposition. The total erosion rates of 150 A runs were separated into the stable (Es) and the unstable (Eu) erosion rate. The Eu was more than 3 times higher in this work. It is believed that the thermofield emission of the unstable arcs produced more erosion because of the higher local heat flux to the cathode spots.
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Books on the topic "Arch width"

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Dean, Karen. Arch the angel of the 91st airborne division. [Waco, Tex.]: Word Music, 1987.

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Bera, Anil K. Specification test for a linear regression model with arch process. Champaign: University of Illinois at Urbana-Champaign, 1993.

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Telemann, Georg Philipp. Concerto in re maggiore per flauto, archi e cembalo. Budapest: Editio Musica Budapest, 1996.

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Thomas, Helen Reid. L' Arche: Ecumenical communities for people with learning disabilities. London: Catholic Truth Society, 2002.

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Strom, Maria Diaz. Joe Arco Iris y yo. New York: Lee & Low Books, 2008.

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Daly, A. F. Load test on a jack arch bridge with cast iron girders. Crowthorne, Berks: Transport and Road Research Laboratory, Structures Group, Bridges Division, 1991.

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Penderecki, Krzysztof. Sinfonietta no. 2 per clarinetto ed archi (1994). Mainz: Schott, 1996.

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Dunne, Peter G. Arch models with structural breaks: A closer look at the feedback trading evidence. [Belfast]: Queen's University, 1992.

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Environmental, Systems Research Institute (Redlands Calif ). Programming ArchInfo with AML: Course notebook with exercises and training data. Redlands, CA: Environmental Systems Research Institute, 1999.

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F, Plant Jeremy. Reading lines : trackside Reading anthracite country with Arch & Bruce Kantner / by Jeremy F. Plant. Scotch Plains, NJ: Morning Sun Books, Inc., 2005.

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Book chapters on the topic "Arch width"

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Muñoz, Ricardo, Michael Tsifansky, and Victor O. Morell. "Interrupted Aortic Arch." In Critical Care of Children with Heart Disease, 267–72. London: Springer London, 2009. http://dx.doi.org/10.1007/978-1-84882-262-7_26.

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Luna-Nelson, Andrea, Alejandro Lopez-Magallon, Michael D. Tsifansky, Ricardo A. Munoz, and Victor O. Morell. "Interrupted Aortic Arch." In Critical Care of Children with Heart Disease, 257–63. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-21870-6_25.

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Das, K., and R. C. Batra. "Instabilites in Arch Shaped MEMS." In Continuous Media with Microstructure, 147–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-11445-8_13.

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Gupta, Vipul. "Carotid Stenting with Tortuous Arch." In 100 Interesting Case Studies in Neurointervention: Tips and Tricks, 411–14. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-1346-2_97.

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Eltorai, Ibrahim M. "Anterior Arch Aplasia with OS Odontoideum." In Rare Diseases and Syndromes of the Spinal Cord, 17–18. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-45147-3_5.

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Hassler, Uwe. "Processes with Autoregressive Conditional Heteroskedasticity (ARCH)." In Stochastic Processes and Calculus, 127–48. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-23428-1_6.

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Archetti, Claudia, and M. Grazia Speranza. "Chapter 12: Arc Routing Problems with Profits." In Arc Routing, 281–99. Philadelphia, PA: Society for Industrial and Applied Mathematics, 2015. http://dx.doi.org/10.1137/1.9781611973679.ch12.

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Benavent, Enrique, Ángel Corberán, Isaac Plana, and José María Sanchis. "Chapter 11: Arc Routing Problems with Min-Max Objectives." In Arc Routing, 255–80. Philadelphia, PA: Society for Industrial and Applied Mathematics, 2015. http://dx.doi.org/10.1137/1.9781611973679.ch11.

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Aichholzer, Oswin, Wolfgang Aigner, Franz Aurenhammer, Kateřina Čech Dobiášová, Bert Jüttler, and Günter Rote. "Triangulations with Circular Arcs." In Graph Drawing, 296–307. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25878-7_29.

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Xu, Yali, and Jing Ping Sun. "Interrupted Aortic Arch associated with Aortopulmonary Window." In Comparative Cardiac Imaging, 19–22. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119453192.ch4.

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Conference papers on the topic "Arch width"

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Pei, Xi, Wenju Zhou, and Haikuan Wang. "Sole Arch Width Extraction Using Greedy Algorithm." In CSAE 2020: The 4th International Conference on Computer Science and Application Engineering. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3424978.3424979.

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Yu, Suk H., Tracy A. Mondello, and Zong-Ming Li. "Experimentally and Theoretically Narrowing Carpal Arch Width to Increase the Area Formed by the Transverse Carpal Ligament." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53277.

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Carpal tunnel syndrome is conventionally treated by open and endoscopic release surgeries in which transecting the transverse carpal ligament (TCL) relieves mechanical insults around the median nerve. The TCL release surgeries yield an increase in the tunnel cross-sectional area particularly within the volar aspect of the tunnel, the arch area, where the median nerve is located. As a result of increased arch area, post-operative follow-up studies using MRI confirmed a significant volar migration of the median nerve [1]. However, transecting the TCL compromises critical biomechanical roles of the carpal tunnel [2], and therefore, it is imperative to investigate an alternative method for treating carpal tunnel syndrome patients while preserving the TCL. Li et al. suggested that increasing the TCL length and narrowing the carpal arch width (CAW) as potential alternatives for increasing the arch area [3]. However, the data from their application of palmarly directed forces to the TCL from inside of the tunnel showed that the TCL length remained relatively constant while the carpal bones were mobilized to increase the arch area [3]. The purpose of this study was to investigate the relationship between CAW narrowing and the TCL-formed arch area by experimental and geometrical modeling.
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Jingwei, Chen. "Parameter Optimization of Composite Basket Handle Tied Arch Bridge with Super Width and Long Span." In 2014 7th International Conference on Intelligent Computation Technology and Automation (ICICTA). IEEE, 2014. http://dx.doi.org/10.1109/icicta.2014.106.

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Tej, Petr, Petr Kněž, and Jan Mourek. "Design of an Experimental Arch Pedestrian Bridge Made of UHPC." In IABSE Congress, Stockholm 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2016. http://dx.doi.org/10.2749/stockholm.2016.1347.

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This paper presents the design of an experimental arch pedestrian bridge made of ultra-high performance concrete (UHPC). The structure is designed as a permanent single-span bridge. The span of the bridge structure is 10.00 m, the total width of shell structure is 0.03 m, and the clearance width of the bridge is 1.50 m. The main structure of the bridge is one prefabricated arch shell structure made of UHPC with dispersed steel fibers without conventional reinforcement. Simultaneously with the designing of the bridge, computer analyses were created in which optimization of the material and geometric parameters of the structure were carried out. The presentation on the conference will contain also production and assembly of the pedestrian bridge. The presentation will include also long-term monitoring of the specimen of the shell structure in 1:1 scale and finally experimentally obtained load bearing capacity of the specimen. Production and testing of the bridge is scheduled for July 2016.
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Fatwa Khasni, Ulfi, Muslim Yusuf, and Nurhayati Harahap. "Correlation of Arch Length and Width to Anteroposterior Lip Position in Class I Non Extraction Malocclusion." In International Dental Conference of Sumatera Utara 2017 (IDCSU 2017). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/idcsu-17.2018.78.

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Fan, Qixiang, Youzhi Liu, Guoxin Zhang, Heng Cheng, Jianfang Xiang, and Qiujing Zhou. "ANALYSIS ON THE CAUSE OF VALLEY WIDTH SHRINKAGE OF AN ULTRA-HIGH ARCH DAM AND ITS INFLUENCE ON DAM SAFETY RISK." In 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/iceesd-18.2018.148.

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Zhu, Xun, P. C. Sui, and Ned Djilali. "Effect of Channel Geometry on the Dynamics of a Water Droplet in a Microchannel." In ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer. ASMEDC, 2008. http://dx.doi.org/10.1115/mnht2008-52242.

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The objective of the present study is to investigate the effects of the microchannel geometry on the dynamic behaviour of liquid water emerging from a pore into a microchannel of a cross gas flow. The flow characteristics are resolved using the volume-of-fluid (VOF) method in conjunction with an interface tracking technique. A microchannel with dimensions of a typical proton exchange membrane fuel cell (PEMFC) gas channel (a square cross section of 250 μm in width) and a pore of 50 μm in diameter on the bottom wall is adopted as the baseline case. Simulations for microchannels of different cross sections, including trapezoid, upside-down trapezoid, triangle, rectangle, and rectangle with a arch bottom wall, are performed and the results are compared with the baseline case. The evolution of liquid water includes stages identified as emergence, growth, deformation, detachment, and remove. The simulations show that the cross section of the microchannel has significant impacts on the dynamics of the water droplet. The detachment time and diameter and the remove time of the water droplet are found to be in this order: triangle < trapezoid < rectangle with arch bottom wall < rectangle < upside-down trapezoid. The present study will advance our understanding in the transport of liquid water in a PEMFC where water is produced in the catalyst layer and flows through the pores of the porous electrode to the gas channel.
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Sanchez, Marcos Sanchez, Robert Ryan, and Simon Roberts. "Mary Elmes Bridge. An urban pedestrian bridge, from concept to opening." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.0276.

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<p>Mary Elmes bridge is a new 66m single span pedestrian and cyclist bridge opened in Cork in July 2019. In September 2016, Cork City Council launched a design competition for a single span low level bridge as part of its key objective to encourage greater sustainable travel in the form of walking and cycling within the city Centre. The overriding challenge was to deliver a considered design - sympathetic to the existing fabric of the city and easy to install within the confined urban environment.</p><p>The solution was a visually appealing design; a slender, 66-metre steel shallow arch, establishing a connective dialogue with its surrounds and compliant with challenging flooding and visual requirements. The structural system is a fully integral, single span with variable depth, central steel box girder and variable width cantilevered walkways. The concept adopts a clever strategy to integrate at grade landings with existing footpath levels while making the structure compatible with future city flood defenses.</p>
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Mo, Gaute, Fernando Ibáñez Climent, Altea Cámara Aguilera, Göran Werme, Henrik Hermansson, and Johan Eriksson. "Väster Pedestrian and Cycle Bridge: Connecting the Town Centre with a New Developed Area." In Footbridge 2022 (Madrid): Creating Experience. Madrid, Spain: Asociación Española de Ingeniería Estructural, 2021. http://dx.doi.org/10.24904/footbridge2022.187.

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<p>This pedestrian and cycle bridge spans the river in Eskilsuna connecting the historic, industrial area of Munktellstaden with the town centre, forming part of a rehabilitation of the area. The bridge was completed in 2016 on behalf of the City of Eskilstuna. The final design was chosen from three alternatives: the Landmark, the Industrial and the Transparent. All three options proposed were of steel, and all designs had to provide a 4.5m free deck width, maintain an unobstructed navigation channel of 5.0m wide by 3.35m high and a maximum slope of 5%. The Landmark proposal was an asymmetric cable stayed bridge with a 27m high, A- shaped, inclined steel pylon located on one bank with two planes of cables towards the steel deck and one plane of cables towards the back anchorage. The Industrial proposal was a variable height optimized truss , inclined outwards to provide a sensation of openness to the bridge user. The design finally chosen by the client was the Transparent. This bridge, unlike the other two, has two supports within the river that allows for a very slender deck. There is a central, low arch spanning 32m and an overall length of 65m. The arches are formed from two inclined box sections which are slightly curved on plan towards the supports. The railing is made up of a series of thin, steel plates connected via a stainless-steel handrail. The overall effect of transparency thus allows for a largely unobstructed view along the river. Due to the slender deck section a detailed dynamic analysis was carried out to check for possible pedestrian-induced vibrations.</p>
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Roding, Matthias, Gerd Sommerkorn, Stephan Hafner, Alexander Ihlow, Snezhana Jovanoska, and Reiner S. Thoma. "Arc4 2 — A double-arch positioner for bistatic RCS measurements with four degrees of freedom." In 2017 European Radar Conference (EURAD). IEEE, 2017. http://dx.doi.org/10.23919/eurad.2017.8249238.

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Reports on the topic "Arch width"

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Demchyna, Bohdan, and Yaroslav Shydlovskyi. Recommendations for Designing Wooden Arches on Metal-toothed Plates. Intellectual Archive, March 2021. http://dx.doi.org/10.32370/ia_2021_03_18.

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This paper presents the findings of the pilot studies and recommendations for designing of two-hinged wooden arches. The prototype models of wooden arches with the span of 6mand the rise of 1m were designed. The models had a rectangular cross-section of 180x40mm and a T-section of 180x40mm with a plywood plate with the thickness of 6 mm and the width of 500mm. The main objective of the T-section was to ensure the stability of the arch. Each arch was composed of six segments –boards joined by clamping plates. The bowstring truss including two inclined tie bars enables carrying asymmetric loads and provides in-plane stability of the arch. A methodology for laboratory testing of the prototype models of wooden arches subjected to different types of loads was developed. Two prototypes of wooden arches were tested with rectangular cross-sections and two T-section ones subjected to the loading across the span, and two prototypes subjected to the half-span loading. In total, eight arches were tested. Deflections of arches, cross-section deformations and arch thrust force were recorded. The arches were tested until failure. The results of testing revealed insufficient stability of the arches with rectangular cross-section in the horizontal plane. For the arches with T-section the whole arch rib was damaged, the in-plane stability was ensured by the T-section. The collapsing force of the T-section arch was about 1.3 times greater than the collapsing force of the rectangular section arches.
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Nelson, Daniel. Asymptotically Optimal Smoothing with ARCH Models. Cambridge, MA: National Bureau of Economic Research, August 1994. http://dx.doi.org/10.3386/t0161.

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Nelson, Daniel, and Dean Foster. Filtering and Forecasting with Misspecified Arch Models II: Making the Right Forecast with the Wrong Model. Cambridge, MA: National Bureau of Economic Research, December 1992. http://dx.doi.org/10.3386/t0132.

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Engle, Robert, Victor Ng, and Michael Rothschild. Asset Pricing with a Factor Arch Covariance Structure: Empirical Estimates for Treasury Bills. Cambridge, MA: National Bureau of Economic Research, November 1988. http://dx.doi.org/10.3386/t0065.

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Hoehler, M., D. McCallen, and C. Noble. The seismic response of concrete arch bridges (with focus on the Bixby Creek bridge Carmel, California). Office of Scientific and Technical Information (OSTI), June 1999. http://dx.doi.org/10.2172/9869.

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Luo Y., A. Jain, W. Fischer, S. Tepikian, and D. Trbojevic. Modeling RHIC Linear Chromaticity with Sextupole Components in the Arc Main Dipoles. Office of Scientific and Technical Information (OSTI), May 2007. http://dx.doi.org/10.2172/1061867.

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Cedfeldt, Paul T., and Mark A. Scott. Integrating CAD Data with Geographic Information Systems Using AutoCAD and ARC/INFO Software. Fort Belvoir, VA: Defense Technical Information Center, March 2000. http://dx.doi.org/10.21236/ada377146.

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Johnson, Jay Dean, Scott S. Kuszmaul, Jason E. Strauch, and David Alan Schoenwald. Creating dynamic equivalent PV circuit models with impedance spectroscopy for arc-fault modeling. Office of Scientific and Technical Information (OSTI), June 2011. http://dx.doi.org/10.2172/1020514.

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Seto, Atsushi, Yuichi Yoshida, and Andre Galtier. Fatigue Properties of Arc-Welded Lap Joints With Weld Start and End Points. Warrendale, PA: SAE International, May 2005. http://dx.doi.org/10.4271/2005-08-0128.

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Ju, Yiguang, Timothy Ombrello, and Alexander Fridman. Development of Non-Equilibrium Plasma-Flame Kinetic Mechanism and its Validation Using Gliding Arc Integrated with Counterflow Burner. Fort Belvoir, VA: Defense Technical Information Center, February 2010. http://dx.doi.org/10.21236/ada530917.

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