Journal articles: 'Dental arch Dental arch Dental Arch Dental Arch'

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Kati, Firas Abd. "Shortened dental arch." Journal of Oral Research S, no. 3 (2020): 30–32. http://dx.doi.org/10.17126/joralres.2020.060.

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Al-Zubair, Nabil Muhsen. "Dental arch asymmetry." European Journal of Dentistry 08, no. 02 (2014): 224–28. http://dx.doi.org/10.4103/1305-7456.130608.

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ABSTRACT Objective: This study was conducted to assess the dental arch asymmetry in a Yemeni sample aged (18-25) years. Materials and Methods: The investigation involved clinical examination of 1479 adults; only 253 (129 females, 124 males) out of the total sample were selected to fulfill the criteria for the study sample. Study models were constructed and evaluated to measure mandibular arch dimensions. Three linear distances were utilized on each side on the dental arch: Incisal-canine distance, canine-molar distance and incisal-molar distance, which represent the dental arch segmental measurements. Results: When applying “t-test” at P < 0.05, no significant differences were found between the right and left canine-molar, incisal-canine and incisal-molar distances in both dental arches for both sexes. The greater variation (0.30 mm) was observed between right and left canine-molar distance in the maxillary dental arch in male and the smaller (0.04 mm) in the mandibular dental arch between the right and left canine-molar distance in females. Conclusion: The findings of the present study revealed a symmetrical pattern of dental arches, since the right and left sides showed no statistically significant difference. In general, it can be observed that the measurements related to the central incisors and canines have the widest range of reading and give the impression that the location of central incisor and canines to each other and to other teeth is the strongest factor in determining the dental arch asymmetry.

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Connell, Todd. "Dental arch dimensional changes." American Journal of Orthodontics and Dentofacial Orthopedics 146, no. 2 (2014): 135. http://dx.doi.org/10.1016/j.ajodo.2014.05.014.

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Choi, Y., E. Jeong, H. Oh, et al. "Feasibility of dental panoramic radiography for dental arch evaluation in small animals." Veterinární Medicína 62, No. 1 (2017): 29–34. http://dx.doi.org/10.17221/18/2016-vetmed.

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The purpose of this study was to evaluate the feasibility of dental panoramic radiography for dental arch evaluation in small animals. The dental arches of four Beagles, one Shih Tzu dog, and three Korean short-haired cats were radiographed using human panoramic X-rays. All animals were under general anaesthesia during the examination. The animals’ heads were placed horizontal to the panoramic device, just as a human’s head is placed in panoramic dental assessments. All animals were evaluated with an open and closed mouth view (human view). In the closed mouth view, the animal was provided a bite blocker for proper placement of the oral cavity. The open mouth view angle was approximately 30–45°. The maxilla and mandible were held in position with radiolucent 3M tape. The standard scoring measurement was performed based on visibility of the tooth root and the sharpness of the dento-alveolar margin. No significant differences in scoring were noticed between the two positions. The visibility of teeth roots in Beagles was far better than that in the Shih Tzu dogs and two Korean short-haired cats. In addition, the Beagle series showed sharp dento-alveolar margin scores. These results suggest that human panoramic dental X-rays represent a possible dental evaluation tool for animals with large skulls.

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UENO, Kentaro, Shunji KUMABE, Michiko NAKATSUKA, and Isao TAMURA. "Factors influencing dental arch form." Okajimas Folia Anatomica Japonica 96, no. 1 (2019): 31–46. http://dx.doi.org/10.2535/ofaj.96.31.

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Al-Zubair, Nabil M. "Establishment of Yemeni Dental Arch Form." Orthodontic Journal of Nepal 3, no. 2 (2013): 22–26. http://dx.doi.org/10.3126/ojn.v3i2.10073.

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Objective: To assess the dental arch forms of Yemeni adult sample. Materials & Method: The Eucledian clustering method of analysis was utilized for the determination of dental arch form. A total of 398 study models were constructed and evaluated to do measurements for both arches using a modified sliding caliper gauge. Six dental cast measurements divided into three sagittal and three transverse measurements were utilized to represent the dental arch width and length measurements. Result: Narrow form is the most prevalent arch form (30.9%) followed by wide form (23.9%), their prominence appear more in females and the least prevalent arch form was the mid form (9.3%), while flat and pointed forms were in between 18.3% and 17.6% respectively. Conclusion: Five arch forms: narrow, wide, mid, pointed and flat were distinguished as unique forms for the dental arches, with the predominance of the narrow arch form were found among Yemeni adults.

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Ling, John Y. K., and Ricky W. K. Wong. "Dental Arch Widths of Southern Chinese." Angle Orthodontist 79, no. 1 (2009): 54–63. http://dx.doi.org/10.2319/092007-452.1.

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Abstract Objective: To investigate the dental arch width of the Southern Chinese across buccal cusps, central fossae, or lingual cusps and compare these values with study findings in different populations and using different definitions. Materials and Methods: The dental arch dimensions of study casts of an unselected sample from a 12-year-old Hong Kong Oral Health Survey of 12-year-old children (n = 358; 210 boys and 148 girls) were measured. Results: When compared with Caucasians, the Southern Chinese were characterized by a wider dental arch width. However, variations were great. All maxillary and mandibular male arch widths were significantly larger than female arch widths, except at the incisor regions. Conclusion: This study yielded a database about dental arch widths by which different studies on these widths can be compared.

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Jiang, Jin Gang, Tian Hua He, Ye Dai, and Yong De Zhang. "Control Point Optimization and Simulation of Dental Arch Generator." Applied Mechanics and Materials 494-495 (February 2014): 1364–67. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.1364.

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During the manufacture of complete denture, the most important step is to design and generate the dental arch curve which adapts to the requirement of patients according to the jaw arch morphology of them. It is important to study the optimization method of the number and position of control point for the dental arch generator. On the basis of motion analysis of the dental arch generator, objective function, multivariate design and constraint function of control point optimization of dental arch generator is determined. Control points number and position of the dental arch generator is optimized. Simulation results verify the feasibility of control point optimization method.

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Shrestha, Rabindra Man. "Polynomial Analysis of Dental Arch Form of Nepalese Adult Subjects." Orthodontic Journal of Nepal 3, no. 1 (2013): 7–13. http://dx.doi.org/10.3126/ojn.v3i1.9267.

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Introduction: Human dental arch acquires stable form and dimensions with the attainment of adulthood. The orthodontic treatment regimen signifies the predetermination of the shape and type of dental arch form of a particular adult population to harmonize with their natural pattern. The use of predetermined arch form helps in diagnosis, treatment planning and stability of orthodontic treatment results. Objective: To analyze the dental arch forms of Nepalese adults and to classify them into morphological types. Materials & Method: Predetermined transverse and sagittal dimensions on dental stone models of one hundred Nepalese adults aged 17-32 years with normal occlusion and dentofacial proportion were measured using standardized Boley gauze. The analysis was done according to Raberin’s mathematical sixth degree polynomial method. The study compared the gender difference among the Nepalese samples. Result: The distribution of the Nepalese arch form types were; 26% flat arch, 24% wide arch, 19% pointed arch, 18% narrow arch and 13% mid arch. Conclusion: Considerable variation in distribution of dental arch form types found between Nepalese male and female samples and among population groups. The analysis enables the mathematical method that predetermines the dental arch form of the individual orthodontic patient.DOI: http://dx.doi.org/10.3126/ojn.v3i1.9267 Orthodontic Journal of Nepal, Vol.3, No.1, 2013: 7-13

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Katagiri, Shingo. "Esthetic Treatment for Asymmetric Dental Arch." Nihon Hotetsu Shika Gakkai Zasshi 47, no. 5 (2003): 834–35. http://dx.doi.org/10.2186/jjps.47.834.

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Carter, Gary A., and James A. McNamara. "Longitudinal dental arch changes in adults." American Journal of Orthodontics and Dentofacial Orthopedics 114, no. 1 (1998): 88–99. http://dx.doi.org/10.1016/s0889-5406(98)70243-4.

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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 camera. The front of the optical head consists of a removable prism which is put into the mouth. The findings can display live images from the camera, which can be archived on a PC. The device captured and geometrically calibrated images permitting comparison of several different dental casts. Results: In the first part of this study 792 sets of study plaster casts were screened. Measurements of dental arch width between reference points of canines, first premolars and first molars were made: upper jaw: men: 3-3 – 35.1 mm (SE 0.13); 4-4 – 37.5 mm (SE 0.13); 6-6 – 48.1 mm (SE 0.19); women: 3-3 – 33.4 mm (SE 0.13); 4-4 – 35.6 mm (SE 0.15); 6-6 – 46.7 mm (SE 0.19). The second part concerns the group of 36 patients which is different from the 792 controls. There were studied changes between initial, post-treatment and post-retention alignment of upper and lower dental arch. Conclusions: Geometrically calibrated images help compare several different steps of the treatment and show a significant difference between patients before and after treatment.

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Walter, M. H., A. Weber, B. Marré, et al. "The Randomized Shortened Dental Arch Study." Journal of Dental Research 89, no. 8 (2010): 818–22. http://dx.doi.org/10.1177/0022034510366817.

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Wolfart, S., B. Marré, B. Wöstmann, et al. "The Randomized Shortened Dental Arch Study." Journal of Dental Research 91, no. 7_suppl (2012): S65—S71. http://dx.doi.org/10.1177/0022034512447950.

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The scientific evidence concerning prosthodontic care for the shortened dental arch (SDA) is sparse. This randomized multicenter study aimed to compare two common treatment options: removable partial dental prostheses (RPDPs) for molar replacement vs. no replacement (SDA). One of the hypotheses was that the follow-up treatment differs between patients with RPDPs and patients with SDAs during the 5-year follow-up period. Two hundred and fifteen patients with complete molar loss in one jaw were included in the study. Molars were either replaced by RPDPs or not replaced according to the SDA concept. A mean number of 4.2 (RPDP) and 2.8 (SDA) treatments for biological or technical reasons occurred during the 5-year observation time per patient. Concerning the biological aspect, no significant differences between the groups could be shown, whereas treatment arising from technical reasons was significantly more frequent for the RPDP group. When the severity of treatment was analyzed, a change over time was evident. When, at baseline, only follow-up treatment with minimal effort is required, over time there is a continuous increase to moderate and extensive effort observed for both groups ( Controlled-trials.com number ISRCTN97265367).

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Baluta, J., and C. L. B. Lavelle. "An analysis of dental arch form." European Journal of Orthodontics 9, no. 1 (1987): 165–71. http://dx.doi.org/10.1093/ejo/9.1.165.

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Baluta, J., and C. L. B. Lavelle. "An analysis of dental arch form." European Journal of Orthodontics 9, no. 2 (1987): 165–71. http://dx.doi.org/10.1093/ejo/9.2.165.

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Yang, Chiao-ling, Feng-ling Chen, and Sinn-wen Chen. "Anodization of the dental arch wires." Materials Chemistry and Physics 100, no. 2-3 (2006): 268–74. http://dx.doi.org/10.1016/j.matchemphys.2005.12.042.

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Alkadhi, Omar Hamad, Sarah Fahad Almahfouz, Hana Abdulmajeed Tokhtah, and Lamia Abdulaziz Binhuwaishel. "Dental Arch Dimensions in Saudi Adults." International Journal of Dentistry 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/2190250.

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Objective. The aim of this study was to investigate the arch dimensions (width, length, and depth) in Saudi Arabia.Materials and Methods. 169 orthodontic models (73 males and 96 females) made of white stone were selected according to inclusion criteria. Measurement of arch dimensions was taken including width, length, and depth at different reference points. Differences between males and females were tested using independent samplest-test.Results. The sample comprised subjects aged 18–33 years old. Most measurements showed higher values for males compared to females. Saudi males showed smaller intercanine widths compared to Caucasians and Southern Chinese but larger widths in females compared to Caucasians and smaller widths compared to Southern Chinese. Saudi males and females showed larger intermolar widths compared to Caucasians but smaller intermolar widths compared to Southern Chinese. For arch length, Saudis showed longer arches compared to Yemenis for both males and females but smaller palatal depths compared to Yemenis.Conclusions. Differences in intercanine width, intermolar width, and palatal length and depth were found between Saudis and other nationalities. Male and female participants had differences in most of the measurements.

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Bu, Xianghhong, Khaled Khalaf, and Ross S. Hobson. "Dental arch dimensions in oligodontia patients." American Journal of Orthodontics and Dentofacial Orthopedics 134, no. 6 (2008): 768–72. http://dx.doi.org/10.1016/j.ajodo.2007.03.029.

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Lee, Shin-Jae, Sungim Lee, Johan Lim, Heon-Jin Park, and Timothy T. Wheeler. "Method to classify dental arch forms." American Journal of Orthodontics and Dentofacial Orthopedics 140, no. 1 (2011): 87–96. http://dx.doi.org/10.1016/j.ajodo.2011.03.016.

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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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Hovorakova, Maria, Oldrich Zahradnicek, Martin Bartos, et al. "Reawakening of Ancestral Dental Potential as a Mechanism to Explain Dental Pathologies." Integrative and Comparative Biology 60, no. 3 (2020): 619–29. http://dx.doi.org/10.1093/icb/icaa053.

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Synopsis During evolution, there has been a trend to reduce both the number of teeth and the location where they are found within the oral cavity. In mammals, the formation of teeth is restricted to a horseshoe band of odontogenic tissue, creating a single dental arch on the top and bottom of the jaw. Additional teeth and structures containing dental tissue, such as odontogenic tumors or cysts, can appear as pathologies. These tooth-like structures can be associated with the normal dentition, appearing within the dental arch, or in nondental areas. The etiology of these pathologies is not well elucidated. Reawakening of the potential to form teeth in different parts of the oral cavity could explain the origin of dental pathologies outside the dental arch, thus such pathologies are a consequence of our evolutionary history. In this review, we look at the changing pattern of tooth formation within the oral cavity during vertebrate evolution, the potential to form additional tooth-like structures in mammals, and discuss how this knowledge shapes our understanding of dental pathologies in humans.

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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 (2000): 184–88. http://dx.doi.org/10.1067/mod.2000.105570.

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Kerekes-Máthé, Bernadette, Csaba Dudás, Nóra Csergő, and Krisztina Mártha. "Inter-Operator Reliability of Dental Morphometric Measurements." Journal of Interdisciplinary Medicine 3, no. 4 (2018): 225–28. http://dx.doi.org/10.2478/jim-2018-0040.

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Abstract Background: Measurement-based studies are prone to measurement errors, which occur at the same operator or between different operators during repeated measurements of the same sample. Aim of the study: To assess the inter-operator reliability of morphometric measurements using a bidimensional image analysis method. Material and methods: Eight study models have been selected, images of teeth and models were taken from vestibular and occlusal view. The following parameters were measured individually by three, previously trained operators: mesio-distal, occluso-gingival, and vestibulo-oral dimensions, vestibular and occlusal area, depth of palatal arch, arch breadth, arch circumference, and arch length. Intraclass correlation coefficients were calculated for each measurement. Results: The reliability of the measurements showed high degrees, all values being higher than 0.8. Conclusions: Dental morphometric measurements done by 2D image analysis can be performed by multiple operators with an excellent reliability.

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Tavares, Alana, Emanuel Braga, and Telma Martins de Araújo. "Digital models: How can dental arch form be verified chairside?" Dental Press Journal of Orthodontics 22, no. 6 (2017): 68–73. http://dx.doi.org/10.1590/2177-6709.22.6.068-073.oar.

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ABSTRACT Introduction: Plaster dental casts are routinely used during clinical practice to access maxillary dental arch form and assist on fabrication of individualized orthodontic archwires. Recently introduced, digital model technology may offer a limitation for the obtainment of a dental physical record. In this context, a tool for dental arch form assessment for chairside use is necessary when employing digital models. In this regard, paper print of the dental arch seems thus to be useful. Methods: In the present study, 37 lower arch models were used. Intercanine and intermolar widths and dental arch length measurements were performed and compared using plaster dental casts, digital models and paper print image of the models. Ortho Insight 3D scanner was employed for model digitalization. Results: No statistically significant differences were noted regarding the measurements performed on the plaster or digital models (p> 0.05). Paper print images, however, showed subestimated values for intercanine and intermolar widths and overestimated values for dental arch length. Despite being statistically significant (p< 0.001), the differences were considered clinically negligible. Conclusion: The present study suggests that paper print images obtained from digital models are clinically accurate and can be used as a tool for dental arch form assessment for fabrication of individualized orthodontic archwires.

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Sofyanti, Ervina, Trelia Boel, Denny Satria, Zuriyah Fionita Ritonga, and Indah Hafniar Hasibuan. "Evaluation of dental arches in orthodontic patients with condylar hyperplasia in a North Sumatra subpopulation: a cross-sectional study." F1000Research 9 (April 16, 2020): 263. http://dx.doi.org/10.12688/f1000research.22780.1.

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Background: Condylar Hyperplasia (CH) is a self-limiting mandibular condyle disorder that shows asymmetry progress conjunction with associated occlusal changes as long as condylar growth is still active and leads to facial asymmetry. This study aimed to evaluate dental arches by analyzing dental arch asymmetry and form in orthodontic patients with CH in a North Sumatra subpopulation. Methods: This is a retrospective study of suspected CH patient’s clinical records who sought for the initial orthodontic treatment between January 2015 to March 2019. Patient with facial asymmetry (based on photography, posterior cross bite and midline deviation), positive temporomandibular joint disorder in functional analysis, and no history of facial trauma were included in the study. Dental arch asymmetry was based on the measurement of dental midline deviation, canine tip in the dental arch, distance of the upper canines from the palatal suture, and inter canine distance. The evaluation of dental arch was achieved by comparing arch width and length. Results: There was a significant difference (p<0.05) of upper canine distance from the palatal suture in female patients when evaluating upper dental arch asymmetry. There was a moderate correlation (r=0.379) in midline deviation between upper and lower dental arch. The dimension and dental arch form was mid and flat, and there was moderate correlation (r=0.448) between the upper and lower dental arch form in these CH patients. Conclusion: The evaluation of dental arch symmetry and arch form showed asymmetric occlusal characteristics in orthodontics patient with CH in North Sumatera subpopulation. In treating these patients, we recommend the plaster cast evaluation as essential and routine procedure in order to understand the complexity of occlusal change due to active growth of condylar and limitation in radiography evaluation.

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Sofyanti, Ervina, Trelia Boel, Denny Satria, Zuriyah Fionita Ritonga, and Indah Hafniar Hasibuan. "Evaluation of dental arches in orthodontic patients with condylar hyperplasia in a North Sumatra subpopulation: a cross-sectional study." F1000Research 9 (May 21, 2020): 263. http://dx.doi.org/10.12688/f1000research.22780.2.

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Background: Condylar Hyperplasia (CH) is a self-limiting mandibular condyle disorder that shows asymmetry progress conjunction with associated occlusal changes as long as condylar growth is still active and leads to facial asymmetry. This study aimed to evaluate dental arches by analyzing dental arch asymmetry and form in orthodontic patients with CH in a North Sumatra subpopulation. Methods: This is a retrospective study of suspected CH patient’s clinical records who sought for the initial orthodontic treatment between January 2015 to March 2019. Patient with facial asymmetry (based on photography, posterior cross bite and midline deviation), positive temporomandibular joint disorder in functional analysis, and no history of facial trauma were included in the study. Dental arch asymmetry was based on the measurement of dental midline deviation, canine tip in the dental arch, distance of the upper canines from the palatal suture, and inter canine distance. The evaluation of dental arch was achieved by comparing arch width and length. Results: There was a significant difference (p<0.05) of upper canine distance from the palatal suture in female patients when evaluating upper dental arch asymmetry. There was a moderate correlation (r=0.379) in midline deviation between upper and lower dental arch. The dimension and dental arch form was mid and flat, and there was moderate correlation (r=0.448) between the upper and lower dental arch form in these CH patients. Conclusion: The evaluation of dental arch symmetry and arch form showed asymmetric occlusal characteristics in orthodontics patient with CH in North Sumatera subpopulation. In treating these patients, we recommend the plaster cast evaluation as essential and routine procedure in order to understand the complexity of occlusal change due to active growth of condylar and limitation in radiography evaluation.

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Islam, Rafiqul, Mohammad Khursheed Alam, Fazal Shahid, and Mohd Fadhli Khamis. "Global Dental Arch Dimension Norms and Sexual Disparities: An overview." Bangladesh Journal of Medical Science 18, no. 1 (2018): 30–35. http://dx.doi.org/10.3329/bjms.v18i1.39543.

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Background: The aim of the present study was to do an overview of the arch dimension for various populations. Also, to evaluate the various type of measurement methods and sexual disparities. Two reviewers independently performed the selection process and the quality of studies was assessed. Method: Studies published form January 2000 until October 2015 were identified in electronic databases: Pubmed, Scopus, Science direct, Web of Science, Medpilot and Medline using keywords.Criteria used included: observational studies, Arch size measured, Permanent dentition, Arch dimension investigated via plaster and digital dental models, measurement via calipers and computers software’s. Result: The forest plots showed the continuous trend for the greater arch dimension for male in relation to female. The current overview showed the arch dimension and its disparities for various populations. Conclusion: The various methods to assess arch dimension should be carefully considered and well conducted as part of the clinical assessment of orthodontic treatment, since arch dimension could influence the diagnosis and treatment planning of orthodontist. Bangladesh Journal of Medical Science Vol.18(1) 2019 p.30-35

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Sofyanti, Ervina, Trelia Boel, Denny Satria, Zuriyah Fionita Ritonga, and Indah Hafniar Hasibuan. "Differences in dental arch characteristics between genders in patients with suspected condylar hyperplasia in a North Sumatra subpopulation: a cross-sectional study." F1000Research 9 (June 12, 2020): 263. http://dx.doi.org/10.12688/f1000research.22780.3.

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Background: Condylar Hyperplasia (CH) is a self-limiting mandibular condyle disorder that shows asymmetry progress in conjunction with associated occlusal changes as long as condylar growth is still active and leads to facial asymmetry. This study aimed to analysis the difference of dental arch characteristics based on genders in orthodontic patients with suspected CH in a North Sumatra subpopulation. Methods: This is a retrospective study of suspected CH patient’s clinical records who sought for the initial orthodontic treatment between January 2015 to March 2019. Patient with facial asymmetry (based on photography, posterior crossbite and midline deviation), the positive temporomandibular joint disorder in functional analysis, and no history of facial trauma were included in the study. Dental arch asymmetry was based on the measurement of dental midline deviation, canine tip in the dental arch, the distance of the upper canines from the palatal suture, and inter canine distance. The evaluation of dental arch was achieved by comparing arch width and length. Results: There was a significant difference (p<0.05) of upper canine distance from the palatal suture in female patients when evaluating upper dental arch asymmetry. There was a moderate correlation (r=0.379) in midline deviation between upper and lower dental arch. The dimension and dental arch form were mid and flat, and there was moderate correlation (r=0.448) between the upper and lower dental arch form in these suspected CH patients. Conclusion: Indeed skeletal asymmetry, the evaluation of the dental arch characteristic symmetry and arch form showed asymmetric occlusal characteristics in orthodontics patient with suspected CH in the North Sumatera subpopulation. In treating these patients, we recommend the plaster cast evaluation as essential and routine procedure in order to understand the complexity of occlusal change due to active growth of condylar and limitation in radiography evaluation.

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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 coordinates for each landmark were collected. For dental arch size analysis, centroid size of each dental arch at T1 and T2 was calculated from raw coordinates and was used as the measure of size. Procrustes Analysis was performed for dental arch shape analysis. Analysis of variance was used to compare the groups for size and shape differences (P &lt; .05). Results: There were no significant dental arch size differences among the expanders at T1 or T2. Differences in arch shape were found between all groups at T2. Intragroup arch shape showed a significant variation for the QH and EDO groups. while it remained stable in the H group. Conclusions: Both the QH and the EDO create dental arch shape changes with greater intercanine than intermolar increase. The H does not change the dental arch shape.

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Zhou, Lei, Chung-Wai Mok, Urban Hägg, Colman McGrath, Margareta Bendeus, and John Wu. "Anteroposterior Dental Arch and Jaw-Base Relationships in a Population Sample." Angle Orthodontist 78, no. 6 (2008): 1023–29. http://dx.doi.org/10.2319/100107-467.1.

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Abstract Objective: To determine the association between the anteroposterior relationship of the dental arch and the anteroposterior relationship of the jaw-base in a Chinese population sample. Materials and Methods: Orthodontic casts and lateral cephalograms were obtained from a random sample of 405 twelve-year-old Chinese children from a population survey in Hong Kong. Angle's classification was used to assess the dental arch relationship from orthodontic casts. The jaw-base relationship was assessed from the lateral cephalograms using angular (ANB angle) and linear (Wits analysis) measurements. The correlation between the anteroposterior dental arch and jaw-base relationships was assessed. Results: The anteroposterior dental arch did coincide with the jaw-base relationships, as expressed by the ANB angle in 61%, the Wits analysis in 67%, and with both in 53%. The jaw-base relationship assessed with the Wits analysis was more significantly associated with the dental arch relationship (P &lt; .001) than that assessed with the ANB angle (P &lt; .01). The correlation coefficient between the ANB angle and the Wits appraisal was .65 for the combined sample, and .60, .64, and .67 for Class I, II, and III dental arch relationships. Conclusion: In this population, the anteroposterior relationship of the dental arch and jaw-base fail to match in at least one out of every three individuals. Linear measurement of anteroposterior jaw-base relationships is a more valid reflection of the dental arch relationship than angular measurements.

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Lubis, Hilda Fitria, and Tiopan Beltsazar Sinurat. "Howe’s dental cast analysis of students at the University of Sumatera Utara." Dental Journal (Majalah Kedokteran Gigi) 53, no. 3 (2020): 149. http://dx.doi.org/10.20473/j.djmkg.v53.i3.p149-152.

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Background: Cast analysis is the measurement of the upper and lower arch in a 3-dimensional occlusal relationship. Howe’s Analysis can be used to observe total tooth material, arch length, and basal arch width. Howe’s Analysis was conducted to analyse abnormalities of both teeth and the jaw to help diagnose and plan dental care. Purpose: To analyse the difference in total tooth material, arch length, basal arch width, and Howe’s Index between male and female undergraduate students from the University of Sumatera Utara who are of Proto-Malay origin. Methods: Ninety-six samples comprised of 48 male and 48 female students were recruited through the purposive sampling method. All samples were undergraduate students at the University of Sumatera Utara and of Proto-Malay origin, aged between 18 to 26, and have met the exclusion and inclusion criteria. We measured the variables using a digital caliper to measure basal arch width and arch length and Moorrees’ method to measure total tooth material. Data were analysed statistically using an independent t-test to compare means between groups (p<0.05). Results: The male samples’ average value of total tooth material 98.49 mm±3.79, arch length 45.55 mm±2.28, basal arch width 41.07 mm±2.83, and Howe’s Index were 41.71 %±2.63, respectively. The female samples had a lower value compared to the male samples, 94.51 mm, 43.27 mm, 36.89 mm, and 39.05 % respectively. There was a significant difference in the total tooth material, arch length, basal arch width, and Howe’s Index between male and female undergraduate students from the University of Sumatera Utara of Proto-Malay origin (p=0.001; p<0.05). Conclusion: The average measurement of total tooth material, arch length, basal arch width, and Howe’s Index was higher in male than female undergraduate students from the University of Sumatera Utara of Proto-Malay origin.

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Poudel, Sabina, Prabhat Shrestha, Lochana Acharya, and Sijan Poudyal. "Assessment of Nepalese prosthodontist’s attitude towards morphological completeness of dental arches in partially dentate older patients." Journal of Chitwan Medical College 10, no. 1 (2020): 74–77. http://dx.doi.org/10.3126/jcmc.v10i1.28077.

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Background: Complete dentition is not always appropriate for old aged medically compromised and financially weak individuals. It is the dentist to decide what minimum number of teeth should be restored to have the proper oral function. The aim was to find out the opinion of prosthodontists of Nepal regarding the suitability of shortened dental arch as treatment modality and how frequently is this treatment choice for an old aged Nepalese patient. Methods: A pretested close ended questionnaire was usedin this study.After taking ethical clearance from Nepal Health Research Council, online questionnaire was sent to the participants along with the consent. Analysis was done using SPSS (version 21) statistical software package. Descriptive statistics was used. Percentage and frequencies were calculated. Results: Among respondents, 96.2% (n=51) had heard about shortened dental arch therapy but 3.8 % (n=2) had never heard about it. Forty-two (79.2%) do support shortened dental arch. Eleven (20.8%) do not favorshortened dental arch. Their main reason for replacing molars was to improve masticatory function.Instead of shortened dental arch,n=5(45.5%) prefer cast partial denture and 6(54.5%) advice implant supported fixed prosthesis. Among Prosthodontists who recommended shortened dental arch therapy, eight (19.1%) always advised patients not to replace molars. Twenty-four (57.1%) prosthodontists who support shortened dental arch therapy mentioned chewing function in shortened dental arch patients as satisfactory. Conclusions: Majority of Prosthodontists agree that shortened dental arch is a suitable treatment option for older people in developing countries like Nepal. But the treatment is not employed in clinical practice as required.

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Ciftci, Volkan, Aslıhan Uzel, and Muharrem Cem Dogan. "Evaluation of Skeletal and Dental Effects of Lower Lingual Arches." Journal of Clinical Pediatric Dentistry 42, no. 6 (2018): 469–74. http://dx.doi.org/10.17796/1053-4625-42.6.13.

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Objective: A lower lingual arch is usually recommended as a holding device to maintain arch length and to prevent mesial migration of the mandibular first molars. Despite its widespread use, comparatively little is known about the effects of a lower lingual holding arch on preservation of lower arch dimensions and tooth position and the impact of the device on mandibular growth. The aim of this study is to evaluate the skeletal and dental effects of the lower lingual holding arch with regard to arch dimension, positions of mandibular molars and incisors, and usual mandibular growth. Study design: Thirty-four children (18 males and 16 females) who needed space maintainers were included in the present study. The patients were divided into two groups according to whether they were missing second primary molars on one or both sides. Group I comprised 16 children (8 males and 8 females, average age 8.8 ± 0.9 years) with a missing second primary molar on one side; Group II comprised 18 children (10 males and 8 females, average age 8 ± 0.7 years) with extractions on both sides. Lateral cephalograms, dental pantomograms, and study casts of the patients were taken at the beginning and the end of the study period. Average treatment time was 20.4 ± 4 months. Results: Lower incisors moved forward and Incisor Mandibular Plane Angle (IMPA°) increased in both treatment groups. Statistically significant differences between the groups were found when comparing pre-treatment and post-treatment arch dimension and position of mandibular molars. Results were better for lingual arches with extraction on one side than with extraction on both sides Conclusions: A lingual arch seems to be an effective tool for maintaining arch length, and was not found to impair mandibular growth.

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Ahmed, Maheen, Attiya Shaikh, and Mubassar Fida. "Evaluation of conformity of preformed orthodontic archwires and dental arch form." Dental Press Journal of Orthodontics 24, no. 1 (2019): 44–52. http://dx.doi.org/10.1590/2177-6709.24.1.044-052.oar.

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ABSTRACT Introduction: The alterations in the arch form during treatment are dictated by the dimensions of the archwires. Objective: This study aimed to determine the mean arch dimensions of a sample of Pakistani subjects and to evaluate the conformity of preformed archwires with mandibular arch form. Methods: The dental records of 1,500 adult subjects were evaluated. The mandibular casts of 42 subjects (males = females = 21) with balanced facial profile, Class I occlusion, ideal overjet and overbite were included. Brackets were bonded on all teeth. Arch dimensions were evaluated at canines, first premolars, second premolars, first and second molars, with digital vernier calipers. The arch widths at the level of aforementioned teeth were evaluated on the digitized archwires, using the mean arch depths of the subjects. Results: In males, the archwires were found to be wider at canines and premolars, and significantly narrower at first (p< 0.001, 95% CI = 2.03 - 5.74) and second molars (p< 0.001, 95% CI = 2.29 - 7.73) as compared to the arch dimensions of the mandibular casts. In females, the archwires were significantly narrower at canines (p< 0.001, 95% CI = 1.4 - 3.97), and first (p= 0.02, 95% CI = 0.402 - 4.41) and second molars (p< 0.001, 95% CI = 1.76 - 6.13). Conclusion: No single commercially available archwires evaluated in the present study conformed to the arch dimensions of our subjects. Utilization of the currently available archwires may result in unwarranted modification of arch form, which may lead to unstable post-treatment teeth position.

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Mochizuki, Mika, Kensuke Yamagata, and Kiyomi Tokutomi. "Dynamic Palatography Including Dental Arch in Sentence." Nihon Hotetsu Shika Gakkai Zasshi 42, no. 5 (1998): 847–56. http://dx.doi.org/10.2186/jjps.42.847.

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Murshid, Zuhair. "Integrity of dental arch form: A review." Egyptian Orthodontic Journal 43, no. 6 (2013): 55–67. http://dx.doi.org/10.21608/eos.2013.78879.

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Sekikawa, Mitsuo. "Fourier analysis of the dental arch form." Japanese Journal of Oral Biology 28, no. 1 (1986): 43–61. http://dx.doi.org/10.2330/joralbiosci1965.28.43.

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Pachì, Francesco, Ruggero Turlà, and Alessandro Proietti Checchi. "Head Posture and Lower Arch Dental Crowding." Angle Orthodontist 79, no. 5 (2009): 873–79. http://dx.doi.org/10.2319/060708-595.1.

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Abstract Objective: To test the null hypothesis that there is no relationship between the posture of the head and the neck and late lower arch crowding. Materials and Methods: The sample comprised 55 subjects (23 female, 32 male), age 12–18 years, with complete permanent dentition and without previous orthodontic treatment. Space conditions were valued by Nance's space analysis on the study models. Craniovertical, craniocervical, and craniohorizontal postural variables were recorded from lateral cephalograms. Student's t-test was performed to assess the differences of the postural angles between the two groups. Results: The results showed that the differences of the postural variables between the two groups are statistically significant. Subjects with more than 2 mm dental crowding had mean craniocervical angles (NSL/CVT, NSL/OPT, NL/CVT, NL/OPT) that were 5° to 6° larger than the subjects with the space conditions smaller than 2 mm (P ≤ .01). In addition, the mean craniohorizontal angles (CVT/Hor, OPT/Hor) in the subjects with lower dental crowding were 4° smaller than subjects without dental crowding (P &lt; .05). Conclusions: The hypothesis is rejected. A clear pattern of association between extended head posture and lower arch dental crowding was found.

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Nakatsuka, Michiko, Tohru Tsujibayashi, Shunji Kumabe, Seong Suk Jue, Je Won Shin, and Yasutomo Iwai-Liao. "Fourier Analysis of Maxillary Dental Arch Forms." Korean Journal of Physical Anthropology 21, no. 2 (2008): 137. http://dx.doi.org/10.11637/kjpa.2008.21.2.137.

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Niedzielska, Iwona. "Third molar influence on dental arch crowding." European Journal of Orthodontics 27, no. 5 (2005): 518–23. http://dx.doi.org/10.1093/ejo/cji045.

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Mutinelli, S., M. Cozzani, M. Manfredi, M. Bee, and G. Siciliani. "Dental arch changes following rapid maxillary expansion." European Journal of Orthodontics 30, no. 5 (2008): 469–76. http://dx.doi.org/10.1093/ejo/cjn045.

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Grunberg, J. "The horizontal curve of the dental arch." European Journal of Orthodontics 32, no. 6 (2010): e158-e160. http://dx.doi.org/10.1093/ejo/cjq136.

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Al-Zubair, NabilMuhsen. "Determinants factors of Yemeni dental arch forms." Journal of Orthodontic Research 2, no. 2 (2014): 55. http://dx.doi.org/10.4103/2321-3825.131114.

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Kondratyeva, Tatyana, Yury Harutyunyan, Dmitry Domenyuk, Sergei Dmitrienko, and Stanislav Domenyuk. "METHODOLOGICAL APPROACHES TO STUDYING DENTAL ARCH MORPHOLOGY." Archiv Euromedica 10, no. 2 (2020): 95–100. http://dx.doi.org/10.35630/2199-885x/2020/10/2.25.

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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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Mohammad. "Dental Arch Dimension of Malay Ethnic Group." American Journal of Applied Sciences 8, no. 11 (2011): 1061–66. http://dx.doi.org/10.3844/ajassp.2011.1061.1066.

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WITTER, D. J., P. F. ALLEN, N. H. F. WILSON, and A. F. KÄYSER. "Dentists'attitudes to the shortened dental arch concept." Journal of Oral Rehabilitation 24, no. 2 (2008): 143–47. http://dx.doi.org/10.1111/j.1365-2842.1997.tb00307.x.

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Chen, Sinn-Wen, Hsin-Jay Wu, Chih-Hao Liu, Yuan-Chun Chien, and Chih-Chang Hu. "Dental arch wires with tooth-like color." Advances in materials Research 1, no. 1 (2012): 31–35. http://dx.doi.org/10.12989/amr.2012.1.1.031.

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Little, Robert M. "Stability and Relapse of Dental Arch Alignment." British Journal of Orthodontics 17, no. 3 (1990): 235–41. http://dx.doi.org/10.1179/bjo.17.3.235.

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Journal articles on the topic 'Dental arch Dental arch Dental Arch Dental Arch'

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