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Journal articles on the topic 'Arch shape'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Kou, Chang Huan, Ming Chang Yang, Shih Wei Ma, and Tsung Ta Wu. "An Investigation into the Earthquake Reaponses of Special-Shaped Arch Bridges." Applied Mechanics and Materials 117-119 (October 2011): 328–31. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.328.

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By building a finite element model of a special-shaped arch bridge, this paper discusses the effects of the changes of the geometric shape, and the skewed angle of the girder and arch on the dynamic characteristics. In addition, this paper analyzes the longitudinal earthquake responses using the response spectrum method. The results show that when longitudinal earthquakes occur, all geometric shapes, and skewed angles of the girder and arch exhibit different levels of effect on the horizontal and vertical deformations of the girder and the arch, the internal forces of the arch, the girder, and

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Rivera, Sandra, Francia Triana, Libia Soto, and Antonio Bedoya. "Form and size of the dental arches in a school population of Amazonian’s aborigines." Colombia Medica 39, no. 1.Supl.1 (2008): 51–56. http://dx.doi.org/10.25100/cm.v39i1.supl.1.564.

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Objective: The purpose of this study was to determine dental archs’ shape, and to describe differences in transversal dimensions and archs’ depths in mixed dentition, in order to know occlusal harmony arrangement in a native student population from Leticia, Amazonas, Colombia. Methods and materials: A cross-sectional study with 64 students (32 boys and 32 girls) distributed in two groups: 31 students with early mixed dentitions and 33 students with belated mixed dentitions between 6 and 12 years old was carried out. Studied variables were measured from plaster cast study models. Results: Oval

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Tarigan, Theresia, and Ismet Danial Nasution. "Alveolar arch shapes and its relation to complete denture retention." Journal of Syiah Kuala Dentistry Society 5, no. 1 (2021): 30–36. http://dx.doi.org/10.24815/jds.v5i1.18426.

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The alveolar ridge consists of denture bearing mucosa, sub-mucosa and periosteum, and residual alveolar bone. After tooth extraction, the remaining alveolar bone undergoes a remodeling process that leads to morphological reduction and alteration, which results in the change in alveolar ridge forms. However, it does not change alveolar arch shapes. This literature review aimed to analyze the relationship of alveolar arch shapes with complete denture retention. According to House (1958), alveolar arch shapes classified into three classes: Class I-square, Class II-tapering, Class III-ovoid. Those

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Kairalla, Silvana Allegrini, Giuseppe Scuzzo, Tarcila Triviño, Leandro Velasco, Luca Lombardo, and Luiz Renato Paranhos. "Determining shapes and dimensions of dental arches for the use of straight-wire arches in lingual technique." Dental Press Journal of Orthodontics 19, no. 5 (2014): 116–22. http://dx.doi.org/10.1590/2176-9451.19.5.116-122.oar.

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INTRODUCTION: This study aims to determine the shape and dimension of dental arches from a lingual perspective, and determine shape and size of a straight archwire used for lingual Orthodontics. METHODS: The study sample comprised 70 Caucasian Brazilian individuals with normal occlusion and at least four of Andrew's six keys. Maxillary and mandibular dental casts were digitized (3D) and the images were analyzed by Delcam Power SHAPET 2010 software. Landmarks on the lingual surface of teeth were selected and 14 measurements were calculated to determine the shape and size of dental arches. RESUL

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Tamayo-Quintero, J. D., J. B. Gómez-Mendoza, and S. V. Guevara-Pérez. "DentalArch: AI-Based Arch Shape Detection in Orthodontics." Applied Sciences 14, no. 6 (2024): 2567. http://dx.doi.org/10.3390/app14062567.

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Objective: This study aims to introduce and assess a novel AI-driven tool developed for the classification of orthodontic arch shapes into square, ovoid, and tapered categories. Methods: Between 2016 and 2019, we collected 450 digital dental models. Applying our inclusion and exclusion criteria, we refined our dataset to 50 models, ensuring a focused and detailed analysis. Plaster casts were digitized into 3D models with AutoScan-DS-EX. Three trained evaluators then measured mesiodistal and arch widths using MeshLab. The development of DentalArch was undertaken in two versions: the first versi

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Nie, Zhihua, Chao Fu, Yongfeng Yang, and Jiepeng Zhao. "Transient Dynamic Response of Generally Shaped Arches under Interval Uncertainties." Applied Sciences 14, no. 13 (2024): 5918. http://dx.doi.org/10.3390/app14135918.

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This paper endeavors to investigate the characteristics of the transient dynamic response of a generally shaped arch when influenced by uncertain parameters while being subjected to specific external excitation. The equations of motion of the generally shaped arches are derived by the differential quadrature (DQ) method, and the deterministic dynamic responses are calculated using the Newmark-β method. By employing the Chebyshev inclusive function, an interval method based on a non-intrusive polynomial surrogate model is developed, and the uncertain dynamic responses are reckoned by enabling n

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Baral, Prakash, Rami Shrestha, Subash Sapkota, Sapana Koju, and Binod Chaudhari. "A Study of Anatomical Shape of arch projected by Alveolar Process of Maxillary and Mandibular Bone." Journal of Gandaki Medical College-Nepal 13, no. 2 (2020): 164–68. http://dx.doi.org/10.3126/jgmcn.v13i2.30222.

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Introduction: Maxilla and Mandible have an alveolar process that bears socket for root of teeth. When the teeth fall or gets extracted there is resorption of alveolar process. The teeth alignment determines the shape of alveolar process. The objectives of the study was to assess the distribution pattern of anatomical shape of arch projected by alveolar process in Maxilla and Mandible and to compare the anatomy of arch amongst the population of Aryan and Mongoloid communities. Methodology: A total number of 856 people with intact anatomy of alveolar arch were included in the study. Anatom

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Pugliese, Fernando, Juan Martin Palomo, Louise Resti Calil, Arthur de Medeiros Alves, José Roberto Pereira Lauris, and Daniela Garib. "Dental arch size and shape after maxillary expansion in bilateral complete cleft palate: A comparison of three expander designs." Angle Orthodontist 90, no. 2 (2019): 233–38. http://dx.doi.org/10.2319/020219-74.1.

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ABSTRACT Objective: The objective of this study was to compare the effects on upper dental arch size and shape after maxillary expansion with Hyrax, Quad-helix, and a differential opening expander in bilateral cleft lip and palate (BCLP) patients. Materials and Methods: Seventy-five BCLP patients were divided into three groups: Hyrax (H), Quad-helix (QH), and Expander with differential opening (EDO). Digital models were obtained before (T1) and after 6 months (T2) of maxillary expansion. Twelve landmarks were placed by one investigator on T1 and T2 dental models of each group, and x,y coordina

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Lee, Byoung Koo, Gweon Sik Kim, Sang Jin Oh, and Tae Eun Lee. "Free Vibrations of Tapered Horseshoe Circular Arch with Constant Volume." Applied Sciences 10, no. 16 (2020): 5431. http://dx.doi.org/10.3390/app10165431.

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This paper presents free vibrations of the tapered horseshoe circular arch with a constant volume. The volume of the arch is constant, and the cross-sectional shape of the arch is square and circular. The taper function of the arch is a quadratic function. Differential equations with the boundary conditions that govern the free vibration of such arches are derived and numerically solved to calculate natural frequencies and mode shapes. The natural frequencies of this study agree well with those of the finite element ADINA. Parametric studies of the geometrical and cross-sectional properties of

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Arévalo Pinedo, Cindy Minelly, and Guido Alberto Perona-Miguel de Priego. "Relación entre espacios primate y la forma de arcos dentarios en niños de 3 a 6 años. Un estudio transversal." Revista Científica Odontológica 12, no. 3 (2024): e204. http://dx.doi.org/10.21142/2523-2754-1203-2024-204.

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The objective of this study was to determine the relationship between primate spaces and the dental arches shape in kids from 3 to 6 years of age, from the I.E. Inicial Niño Jesús de Praga in Moyobamba, Peru, during the 2023 school year. Materials and methods: This prospective, traverse, descriptive and observational study was made up of 237 participants, who were examined using a clinical file where the findings were recorded based on, he absence or presence of primate spaces and the shape of the dental arch was classified as oval, square or triangular. A univariate analysis of frequency and

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Wang, S. S., Y. F. Zhang, M. S. Cao, and W. Xu. "Effects of Contraction Joints on Vibrational Characteristics of Arch Dams: Experimental Study." Shock and Vibration 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/327362.

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This study experimentally investigates the effects of contraction joints on the vibrational characteristics of high arch dams. Three scale models of the world’s second highest dam, the Xiaowan Arch Dam, are used as experimental specimens identified by zero, one, and two contraction joints. When a scale model vibrates harmonically at a specific frequency, its operating deflection shape is acquired by using a scanning laser vibrometer to scan the side surface of the model. The effects of contraction joints on the vibrational characteristics of arch dams are studied by examining the changes in op

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Duan, Yin, Wei Yuan, and Hui Bo Liu. "Shape Optimization for Arch Dam with Sequential Quadratic Programming Method." Applied Mechanics and Materials 580-583 (July 2014): 1961–65. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.1961.

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The sequential quadratic programming method is introduced in arch dam shape optimization design. In the optimization computation, the arch dam volume is taken as objective function, and the calculation is realized by automatically considering loading process, equivalent stress computation and simulation of shape optimization for arch dam based on FEM. A parabola arch dam is used as a numerical example. The result shows that the optimized figure is much safer and more practical, which indicates that the SQP method is an effective way for optimization design of arch dam shape.

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Kostić, Milena, Nadica S. Đorđević, Nikola Gligorijević, et al. "Correlation Theory of the Maxillary Central Incisor, Face and Dental Arch Shape in the Serbian Population." Medicina 59, no. 12 (2023): 2142. http://dx.doi.org/10.3390/medicina59122142.

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Background and Objectives: According to the modified Williams theory, the shape of the maxillary central incisor corresponds to the shape of the maxillary alveolar ridge (dental arch) and the shape of the face. Moreover, the standards of beauty suggest that the center of the face of an individual with a full set of teeth should match the center of the maxillary and mandibular dental arches. The purpose of this study is to conduct a comparative cross-sectional study on the matching of the shape of the face, maxillary central incisor and maxillary dental arch as well as the matching of the midfa

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Nikolić, Dimitrije. "Catenary arch of finite thickness as the optimal arch shape." Structural and Multidisciplinary Optimization 60, no. 5 (2019): 1957–66. http://dx.doi.org/10.1007/s00158-019-02304-9.

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Li, Biqing, Jinbao Li, and Jinfa Xu. "Design of the three-forked-shape pedestrian landscape cablestayed bridge with egg-shape arch tower." E3S Web of Conferences 237 (2021): 03036. http://dx.doi.org/10.1051/e3sconf/202123703036.

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According to the landscape requirements of the pedestrian cable-stayed bridge of the three-forkedshape canyon, this paper puts forward a kind of pedestrian landscape cable-stayed bridge with egg-shape arch bridge tower, and two kinds of spatial curve design elements are introduced, which are egg-shape arch bridge and three-forked-shape curved bridge deck. The cultural connotation of three-forked-shape canyon has been greatly improved. Combined with the actual project, the engineering parameters are designed and the Midas finite element analysis model is established, static analysis and dynamic

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Farbák, Matúš, Jakub Chromčák, Dáša Bačová, and Jaroslav Odrobiňák. "Investigation of Actual In-Plane Geometric Imperfections of Steel Tied-Arch Bridges." Applied Sciences 13, no. 11 (2023): 6393. http://dx.doi.org/10.3390/app13116393.

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The complex global analysis of the steel tied-arch bridges may require specific data in some cases, e.g., residual stress or real geometrical imperfections. The presented research is focused on the investigation of the actual in-plane shape of the steel tied-arch bridges. To obtain the actual shapes of the arches of existing bridges, 3D terrestrial laser scanning was applied. Data were then investigated as a group in order to find the relationship within the tied-arch bridges’ vertical imperfections. Firstly, the detailed surveyed points in the selected position were mathematically determined

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Maharjan, Surendra, Anjana Rajbhandari, Resina Pradhan, Manju Bajracharya, Pushkar Manandhar, and Bashu D. Pant. "Arch Form and Mathematical Ratio in Orthodontics Patients: A Descriptive Cross-sectional Study." Journal of Institute of Medicine Nepal 45, no. 2 (2023): 49–53. http://dx.doi.org/10.59779/jiomnepal.1267.

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Introduction: Orthodontic treatment aims to achieve a pleasing and stable occlusion. To attain these, the patient's arch shape should be determined before treatment and maintained during treatment. Many attempts have been made to find out the original arch form, but those procedures have had some difficulties. The aim of this study was to determine the arch form using a comparatively simpler mathematical ratio. Methods: In this observational, descriptive cross-sectional study, 300 maxillary pretreatment casts from various malocclusion cases were collected. To determine the arch form, the mathe

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Inoue, Fumihiro. "A Study on Adaptive Arch Structure Applying Variable Geometry Truss (Mechanism of Movable Arch Roof with External Panel)." Journal of Robotics and Mechatronics 21, no. 2 (2009): 172–78. http://dx.doi.org/10.20965/jrm.2009.p0172.

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This paper describes a movable arch roof with external panels as an actual design of an adaptive structure using a VGT (Variable Geometry Truss) mechanism comprising an elementary truss structure with extendable members. This movable arch structure comprises several VGT units jointed in series and pin jointed at each end. It is a stable structure because its edge is restrained, but this reduces its variety of shape change. Various arch shapes can be determined by using inverse analysis to solve the structure shape from the member lengths. An actual movable roof pavilion composed of such a mova

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Tauferová, E., Z. Teuberová, M. Seydlová, et al. "Shape and Size of Dental Arch." Methods of Information in Medicine 45, no. 02 (2006): 191–94. http://dx.doi.org/10.1055/s-0038-1634066.

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Summary Objectives: The diagnostic procedure commences with the initial examination, during which a number of individual findings of the occlusion or malocclusion are clarified [1]. The objective is to describe the morphological and functional characteristics on each patient using specific guidelines, and then to provide a prognosis of the therapy. Upper and lower arch compression in first premolars and molars area was visible before treatment. Methods: A special device (Czech technical university research prototype) was prepared for this purpose. The optical head contains a digital color came

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20

Smith, Amanda L., and Ian R. Grosse. "The Biomechanics of Zygomatic Arch Shape." Anatomical Record 299, no. 12 (2016): 1734–52. http://dx.doi.org/10.1002/ar.23484.

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Hughes, Toby, Lindsay Richards, and Grant Townsend. "Form, Symmetry and Asymmetry of the Dental Arch: Orthogonal Analysis Revisited." Dental Anthropology Journal 16, no. 1 (2018): 3–8. http://dx.doi.org/10.26575/daj.v16i1.163.

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There have been numerous attempts to quantify the shape of the dental arch mathematically, with orthogonal polynomial curves providing a robust and versatile method for quantifying variation in both shape and asymmetry. Lu (1966) first presented the theoretical basis for fitting orthogonal polynomials to arch shape data. Whilst theoretically sound, Lu’s original paper contained several arithmetic errors and a number of incorrect assumptions. In this paper we present corrections for these errors and extrapolate the theory to unequally-spaced arch shape data using a simple recursive procedure fi

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Kou, Chang Huan, Yan Ze Huang, Guang Yang, Shih Wei Ma, and Tsung Ta Wu. "An Investigation into the Static Mechanical Behaviors of Special-Shaped Arch Bridge." Advanced Materials Research 382 (November 2011): 289–92. http://dx.doi.org/10.4028/www.scientific.net/amr.382.289.

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Considering Taiwan’s mountainous terrain and winding roads, the special-shaped arch bridge may exhibit superior adaptability; therefore, it has a wide range of applications in the domestic construction of bridges. This paper describes the basic theory and analytical process of the special-shaped arch bridge, using case studies to illustrate the static response of the bridge under uniform dead load. Furthermore, this paper discusses the effects of the changes of the bridge’s geometric shape from the static load response. The results show that because the arrangement of the special-shaped arch b

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Lu, Xin, Yong Liu, Xiaolong Hou, Cai Chen, and Ruidan Gao. "Numerical Simulation of Mechanical Characteristics and Safety Performance for Pre-Cracked Tunnel Lining with the Extended Finite Element Method." Buildings 14, no. 1 (2024): 123. http://dx.doi.org/10.3390/buildings14010123.

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The service performance of tunnel lining is affected by crack properties and development states. In this paper, numerical simulation models were established to investigate the mechanics characteristics and safety performance for lining structures under different cracks based on the extended finite element method (XFEM). Analyze multiple quantitative factors in simulation, including changes in crack location, crack length, and crack distribution range in the lining structure. The axial force and bending moment of the preset cracks in the lining structures were first studied. The maximum safety

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Tu, Shihao, Zhaoxin Li, Zhiwei Ye, Cun Zhang, and Lei Zhang. "The Complex Function Method Roadway Section Design of the Soft Coal Seam." Mathematical Problems in Engineering 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/9291412.

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As for the sophisticated advanced support technique of vertical wall semicircle arch roadway in the three-soft coal seam, a design of flat top U-shape roadway section was put forward. Based on the complex function method, the surrounding rock displacement and stress distribution laws both of vertical wall semicircle arch roadway and of flat top U-shape roadway were obtained. The results showed that the displacement distribution laws in the edge of roadway surrounding rock were similar between the two different roadways and the area of plasticity proportion of flat top U-shape roadway approxima

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Yan, Tao, He Chun Chen, Bin Wen, and Biao Chen. "Exploring of the Plunge Pool Shape Optimization." Advanced Materials Research 255-260 (May 2011): 3615–19. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3615.

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At present the flat plunge pool and inverted-arch plunge pool are usual plunge pool shape styles in high dam construction. we improve the plunge pool shape according to the study of special flow pattern in the plunge pool and the plunge pool scour mechanism, the high-speed submerged jet diffusion rule in plunge pool, impingement pressure variation rules with the jet flow route changment and some other hydraulic factors, combining with a series of scour experimental results. We analyze the specific situations in the transverse profile and longitudinal profile of the plunge pool respectively and

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Lagos, Miguel, Milton Elgueta, and Mario I. Molina. "Arch and Cable Suspended Bridges." Physics Teacher 61, no. 4 (2023): 263–65. http://dx.doi.org/10.1119/5.0070682.

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An arch bridge is a mainly horizontal deck with an arch as its load-carrying structure. The arch works by transferring the weight and other external vertical loads into a horizontal thrust on the abutments placed at both sides. When the main load on the arch is the homogeneously distributed deck weight, and the arch is properly shaped, the arch rib is subjected to pure compression along its whole extension. Both tensile forces along the arch rib and shear forces transversal to it are absent. Bending moments vanish as well. This has made possible the use of masonry for arch bridges, which uses

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Ramos, Adilson Luiz, Ossam Abu El Haje, Daniela Daufenback Pompeo, Gisela Crippa Furtado, and Luciana Monti Lima Rivera. "Is It Possible to use Cross-sectional and Vertical Facial Measurements to establish the Shape of the Mandibular Arch?" Journal of Contemporary Dental Practice 15, no. 6 (2014): 735–39. http://dx.doi.org/10.5005/jp-journals-10024-1608.

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ABSTRACT Background Given the benefits of radiographic cephalometric studies in determining patterns of dental-skeletal-facial normality in orthodontics, the aim of this study was to investigate the association between mandibular dental arch shape and cross-sectional and vertical facial measurements. Materials and methods It was analyzed plaster casts and teleradiographs in frontal and lateral norm belonging to 50 individuals, aged between 15 and 19 years, with no previous history of orthodontic treatment and falling into four of the six Andrews's occlusion keys. The plaster models were scanne

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Neel, Matthew S. "Simple Mathematical Model for Designing a Corbeled Arch." Mathematics Teacher: Learning and Teaching PK-12 116, no. 4 (2023): 281–88. http://dx.doi.org/10.5951/mtlt.2022.0162.

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This mathematical method can be used to find the size and shape of the bricks necessary to create a corbeled arch of nearly any shape. This method focuses on finding the minimum lengths of the bricks necessary to create a mathematically stable arch subject to certain constraints.

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Ju, Siyeong, Ibrahim Abdullah, Shengmao Lin, and Linxia Gu. "Hemodynamics and Wall Mechanics after Surgical Repair of Aortic Arch: Implication for Better Clinical Decisions." Applied Sciences 9, no. 4 (2019): 807. http://dx.doi.org/10.3390/app9040807.

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Graft repair of aortic coarctation is commonly used to mimic the physiological aortic arch shape and function. Various graft materials and shapes have been adopted for the surgery. The goal of this work is to quantitatively assess the impact of graft materials and shapes in the hemodynamics and wall mechanics of the restored aortic arch and its correlation with clinical outcomes. A three-dimensional aortic arch model was reconstructed from magnetic resonance images. The fluid–structure interaction (FSI) analysis was performed to characterize the hemodynamics and solid wall mechanics of the rep

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Raval, P. B., A. M. Butala, and N. S. Mehta. "Behavior study of precast pier of bridge for its various shape." IOP Conference Series: Earth and Environmental Science 1326, no. 1 (2024): 012012. http://dx.doi.org/10.1088/1755-1315/1326/1/012012.

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Abstract This study presents the analysis and design of precast pier as per Indian standard codes. The analysis and design of pier is carried out by considering various loads as per Indian standers and IRC codes. The design of precast pier is carried out using the STAAD. Pro software. To study the effect of water pressure on precast pier various shapes of pier are considered like rectangular, circular, pier with triangular cut, pier with arch. The comparison of dis-placement, stresses, strength, and stiffness of different shapes are analysed to evaluate the behaviour of pier. The design of con

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Domenyuk, Dmitry, Ghamdan Al-Harazi, Vladimir Shkarin, Sergei Dmitrienko, Taisiya Kochkonyan, and Stanislav Domenyuk. "A METHOD FOR MODELING ARTIFICIAL DENTURES IN PATIENTS WITH ADENTIA BASED ON INDIVIDUALSIZES OF ALVEOLAR ARCHES AND CONSTITUTION TYPE." Archiv Euromedica 11, no. 1 (2021): 109–15. http://dx.doi.org/10.35630/2199-885x/2021/11/1.25.

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87 persons of older age groups with complete adentia underwent somatometric (anthropometric) as well as biometric measurements with cast models of the toothless jaws. The linear and index somatometric parameters, and linear and index parameters for the upper jaw alveolar arches, were calculated. Alveolar arches were classified in view of the total sum of the diagonal dimensions (macro-, micro- and normodiagonal type), the arch index (brachy-, dolicho- and mesoarch type). Modelling the projected shape of the dental arch was based on the parameters of length (the sum of the alveolar arches diago

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Miao, Changqing, Jie Yu, and Mingxing Mei. "Distribution law of corrosion pits on steel suspension wires for a tied arch bridge." Anti-Corrosion Methods and Materials 63, no. 3 (2016): 166–70. http://dx.doi.org/10.1108/acmm-11-2015-1605.

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Purpose This paper aims to research steel wire corrosion pitting distribution characteristics and evolution, the shape, number and size of corrosion pits from one tied arch bridge were tested, analyzed and researched. Design/methodology/approach The probability distribution model of corrosion pits of different shapes was established, and the law of corrosion pit growth and evolution was researched. The relationship between the steel wire local corrosion parameters and the average degree of corrosion was explored. Findings The results revealed that the pits of steel wires can be divided into fo

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Peh, W. C., T. H. Farmer, and W. G. Totty. "Acromial arch shape: assessment with MR imaging." Radiology 195, no. 2 (1995): 501–5. http://dx.doi.org/10.1148/radiology.195.2.7724774.

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Yao, Tse‐Min, and Kyung K. Choi. "Shape Optimal Design of an Arch Dam." Journal of Structural Engineering 115, no. 9 (1989): 2401–5. http://dx.doi.org/10.1061/(asce)0733-9445(1989)115:9(2401).

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Molnar, Stephen, and Iva M. Molnar. "Dental arch shape and tooth wear variability." American Journal of Physical Anthropology 82, no. 3 (1990): 385–95. http://dx.doi.org/10.1002/ajpa.1330820314.

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Akbari, Jalal, Mohammad Taghi Ahmadi, and Hamid Moharrami. "Advances in concrete arch dams shape optimization." Applied Mathematical Modelling 35, no. 7 (2011): 3316–33. http://dx.doi.org/10.1016/j.apm.2011.01.020.

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Vanderplaats, G. N., and S. H. Han. "Arch shape optimization using force approximation methods." Structural Optimization 2, no. 4 (1990): 193–201. http://dx.doi.org/10.1007/bf01748223.

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Osserman, Robert. "How the Gateway Arch Got its Shape." Nexus Network Journal 12, no. 2 (2010): 167–89. http://dx.doi.org/10.1007/s00004-010-0030-8.

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Ivanyuta, Oleg, Ghamdan Al-Haraz, Dmitry Domenyuk, et al. "MODIFICATION OFTHE DENTAL ARCH SHAPE USING GRAPHIC REPRODUCTION METHOD AND ITS CLINICALEFFECTIVENESS IN PATIENTS WITH OCCLUSION ANOMALIES." Archiv Euromedica 10, no. 4 (2020): 181–90. http://dx.doi.org/10.35630/2199-885x/2020/10/4.42.

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Based on the results of the dentoalveolar system morphometry performed in patients with permanent teeth physiological occlusion we have developed a method for studying the anterior dental arch. It follows the circle of geometry patterns as well as stable values in the medialdistal dimensions of the front teeth crowns. In view of the mesial-distal dimensions of 14 teeth and dental arch width between the second molars and individually built radius of the circle we modified the method of dental arches graphic reproduction. The first stage of the dental arch individual shape graphic reproduction i

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Hafiz Daimi, Syed Rehan, Srinivasa Rao Bolla, Moizuddin Jawaduddin Khwaja, et al. "Morphological Classification of Arch of Frohse and Its Implication in Compression of Deep Branch of Radial Nerve." Journal of Evolution of Medical and Dental Sciences 10, no. 31 (2021): 2412–15. http://dx.doi.org/10.14260/jemds/2021/494.

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BACKGROUND Arcade of Frohse (AF) is a tendinous superior margin of superficial layer of supinator muscle which was first described by Frohse and Frankel in 1908. Since then it has been studied by many authors and held accountable as one of the essential components for compression of deep branch of radial nerve (DBRN) which leads to radial tunnel syndrome. Considering AF as an important element of compression, we made an attempt to classify it on the basis of its shape and to find out if any particular shape has a predominant role in compression of the nerve. We also observed the structure of s

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Wu, Gang, Wei-Xin Ren, Ya-Fei Zhu, and Syed M. Hussain. "Static and dynamic evaluation of a butterfly-shaped concrete-filled steel tube arch bridge through numerical analysis and field tests." Advances in Mechanical Engineering 13, no. 9 (2021): 168781402110446. http://dx.doi.org/10.1177/16878140211044671.

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The butterfly-shaped concrete-filled steel tube (CFST) arch bridge is an irregular bridge with unique esthetics. In this paper, this new shape of CFST arch bridge is introduced, and a refined three-dimensional finite element model (FEM) is established to evaluate static and dynamic behavior of the bridge. In order to reduce model errors, the FEM is calibrated according to numerical analysis and field tests. Static calculation results show that the butterfly-shaped bridge has good structural performance. The bending moment and axial force of the arch ribs increase when the camber angle of suspe

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Nandita, Sorte, Vinaya Bhat, and Chethan Hegde. "A Survey to Assess the Number, Shape and Attachment of the Freni in the Maxillary and Mandibular Arches in South Indian Population." Journal of Health and Allied Sciences NU 08, no. 02 (2018): 019–24. http://dx.doi.org/10.1055/s-0040-1708749.

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AbstractFrenum is one of the most variable anatomical structures present in the oral cavity which can be defined as a “fibrous band of tissue attached to the bone of the mandible and maxillae, and is 1. present superficial to muscle attachments.”1. In the present study, hundred individuals aged 18 to 40 years were selected randomly. The patients were examined (i) To assess the number, shape and attachment of the freni in the maxillary arch and (ii) To assess the number, shape and attachment of the freni in the mandibular arch in south Indian population. It was concluded that single labial fren

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Wang, Meimei, Jianwei Zheng, and Shanshan Xue. "Mechanics and Stability of Force Chain Arch in Excavated Granular Material." Applied Sciences 14, no. 6 (2024): 2485. http://dx.doi.org/10.3390/app14062485.

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Rock and soil masses in geotechnical engineering projects, such as tunnels, mines and slopes, undergo relative motion, exhibiting mechanical characteristics of solid–fluid transition under critical conditions. This work analyzes the characteristics of the solid–fluid transition interface and the mode of load transfer through biaxial compression particle flow photoelastic experiments on granular materials. The study documents that this interface forms an arch shape, marked by a force chain arch. The granular material exhibits two distinct states depending on its position: below the arch, the gr

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Banabilh, Saeed M., Zainul A. Rajion, Rani Samsudin, and G. D. Singh. "Dental arch shape and size in Malay schoolchildren with Class II malocclusion." Australasian Orthodontic Journal 22, no. 2 (2006): 99–103. http://dx.doi.org/10.2478/aoj-2006-0009.

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Abstract Aim To quantify and localise differences in Class I and Class II dental arches in Malay schoolchildren. Methods The subjects were 50 Malay schoolchildren (Mean age: 15 + 0.7 years) with either Class I (N = 25) or Class II (N = 25) malocclusions. Fourteen homologous landmarks on the upper and lower study models of the subjects were digitised using MorphoStudio software, and the Procrustes means were computed. The mean Class I and Class II configurations were subjected to t-tests and finite element analysis. Results Normalised upper arch Class I and Class II configurations were statisti

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Kou, Chang Huan, Chin Sheng Kao, Ming Chang Yang, Tsung Ta Wu, and Shih Wei Ma. "An Investigation into the Dynamic Mechanical Behaviors of Special-Shaped Arch Bridges." Applied Mechanics and Materials 178-181 (May 2012): 2260–63. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.2260.

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By building a finite element model of a special-shaped arch bridge, this paper discusses the effects of the changes of the geometric shape, and the skewed angle of the girder and arch on the dynamic characteristics. During the free vibration characteristics analysis, changes in the rise-span ratio had a relatively significant impact on the special-shaped arch bridge’s free vibration frequency since the basic frequency would increase as the rise-span ratio decreased. Changes to the rise-span ratio had a relatively minimal effect on the in-plane vibration status, while it had a significant effec

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Meng, Sichao, and Zhanyi Zhang. "Simulation analysis of the entire construction process of the sunflower shaped continuous arch bridge." Journal of Physics: Conference Series 2736, no. 1 (2024): 012007. http://dx.doi.org/10.1088/1742-6596/2736/1/012007.

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Abstract At present, there is a lot of research on the structural system of the completion stage of the Kuihua arch bridge in China, but there is a lack of research on the risks existing in each stage of the construction of the Kuihua arch bridge. Therefore, it is necessary to conduct a full process simulation analysis of the construction process of the sunflower shaped continuous arch bridge. The following conclusions were drawn from this study: (1) After analysis, the construction method of first removing the support below the main arch ring and then pouring the main beam can ensure the safe

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Rieuwpassa, Irene Edith, Syamsiar Toppo, and Sri Dian Haerawati. "Perbedaan ukuran dan bentuk lengkung gigi antara laki-laki dan perempuan suku Bugis, Makassar, dan Toraja Difference of size and shape of dental arch between male and female of Buginese, Makassarese, and Toraja." Journal of Dentomaxillofacial Science 11, no. 3 (2012): 156. http://dx.doi.org/10.15562/jdmfs.v11i3.330.

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Factors which influence the dental arch changes including genetic and environment. This study aims to determine thedifferences in size and shape of dental arch between men and women of Buginese, Makassarese and Torajanese. Thisstudy is an observational study, with a cross-sectional study design. The sampling method was purposive sampling, andnumber of samples were 90 samples obtained from 90 people with 30 people for each tribe, consist of 15 men and 15women, aged 18-25 years, with full dentition. Data were obtained through tcasting models of the maxillary andmandibular samples then were measu

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Paranhos, Luiz Renato, Carolina Souto Lima, Ricardo Henrique Alves da Silva, Eduardo Daruge Júnior, and Fernando Cesar Torres. "Correlation between maxillary central incisor crown morphology and mandibular dental arch form in normal occlusion subjects." Brazilian Dental Journal 23, no. 2 (2012): 149–53. http://dx.doi.org/10.1590/s0103-64402012000200010.

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The aim of this study was to evaluate the correlation between the morphology of the mandibular dental arch and the maxillary central incisor crown. Cast models from 51 Caucasian individuals, older than 15 years, with optimal occlusion, no previous orthodontic treatment, featuring 4 of the 6 keys to normal occlusion by Andrews (the first being mandatory) were observed. The models were digitalized using a 3D scanner, and images of the maxillary central incisor and mandibular dental arch were obtained. These were printed and placed in an album below pre-set models of arches and dental crowns, and

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Jasińska, Dorota, and Dorota Kropiowska. "The Optimal Design of an Arch Girder of Variable Curvature and Stiffness by Means of Control Theory." Mathematical Problems in Engineering 2018 (December 24, 2018): 1–13. http://dx.doi.org/10.1155/2018/8239464.

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The problem of optimal design of the statically indeterminate arch girder which constitutes the primary structural system of the arch bridge is presented. The task is to determine the optimal shape of the axis of the arch girder, as well as the optimal distribution of the cross section height, ensuring the minimum arch volume as well as fulfillment of the standard requirements. This optimisation task, with numerous control functions and constraints, is formulated as a control theory problem with maintaining the formal structure of the minimum principle and then transformed to the multipoint bo

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Khandelwal, Deepak, M. K. Shrimali, and S. D. Bharti. "Earthquake Response of Arch Dams including Hydrodynamic effect using ABAQUS." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 969–73. http://dx.doi.org/10.38208/acp.v1.608.

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A simple arch dam [1] is analyzed to find responses due to an earthquake, including the hydrodynamic effect of the reservoir water. The simple arch shape dam was modeled as a monolith structure, assuming the linear behavior of dam concrete. The arch dam is modeled with finite elements. The hydrodynamic effect is considered as an added mass of water adhered to the dam’s upstream surface [2]. Natural frequencies and mode shapes are computed for the dam without water and the dam with water. Time history analysis of the dam is performed for the Kern County earthquake (1952), Taft component 111 acc

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