Using the zygomatic arch as a reference line for clinical applications and anthropological studies

Park, Jung-Ah; Lee, Dong-Seon; Koh, Ki‐Seok; Song, Wu‐Chul

doi:10.1007/s00276-018-2162-6

Cited by 5 publications

(8 citation statements)

References 19 publications

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“…The effectiveness of the use of a plane A, the superior border of the zygomatic arch, was proved by Park, Lee, Koh and Song W.C. [ 18 ].…”

Section: Discussion Of Outcomesmentioning

confidence: 99%

“…Examples of such measurements include: YEN angle formed by the points S, M, G defining the sagittal relationship between the maxilla and the mandible, first described by Neel et al in 2009 [ 10 ]. Pi analysis referring to the angular measurement Pi (GG`M) and the linear measurement Pi (G`M`) based on the points G, M from which the perpendicular goes to the true horizontal plane in the natural position of the head, defining the sagittal relationship between the maxilla and the mandible [ 11 ], first described by Kumar et al in 2012 [ 12 ] W angle formed by the points S, M, G, defining the sagittal relationship between the maxilla and mandible, first described by Bhad et al in 2011 [ 13 ] SAR angle formed by the points M, G, W, defining the sagittal jaw base discrepancy, described by Sonahita et al in 2015 [ 14 ] DW angle using Walker and Wing (WW) points to assess the sagittal discrepancy, described by Hatewar et al in 2015 [ 15 ] Tau angle formed by the points T, M, G, defining the sagittal relationship between the maxilla and the mandible, first described by Gupta et al in 2020 [ 6 ] R angle formed by the points N, C, Me to assess the vertical discrepancy, first described by Rizwan and Mascarenhas in 2013 [ 16 ] KP (extraoral) plane and points NS, SAE bilaterally to assess the vertical discrepancy, first described by Kattan et al in 2018 [ 17 ] Superior border of the zygomatic arch to assess the vertical discrepancy as an alternative to the Frankfurt horizontal line introduced by Park et al in 2019 [ 18 ] …”

Section: Introductionmentioning

confidence: 99%

“…Superior border of the zygomatic arch to assess the vertical discrepancy as an alternative to the Frankfurt horizontal line introduced by Park et al in 2019 [ 18 ]…”

Section: Introductionmentioning

confidence: 99%

“…W angle formed by the points S, M, G, defining the sagittal relationship between the maxilla and mandible, first described by Bhad et Tau angle formed by the points T, M, G, defining the sagittal relationship between the maxilla and the mandible, first described by Gupta et Superior border of the zygomatic arch to assess the vertical discrepancy as an alternative to the Frankfurt horizontal line introduced by Park et al in 2019 [18] However, to confirm the diagnostic effectiveness of the above-mentioned measurements, it is necessary to carry out a thorough analysis and comparison of studies on their use. The aim of this study was to evaluate the available scientific literature describing new landmarks and reference linear and angular measurements of 2D cephalometric analyses assessing the sagittal and vertical discrepancies in the positions of jaw bases.…”

mentioning

confidence: 99%

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New Sagittal and Vertical Cephalometric Analysis Methods: A Systematic Review

Kotuła

Kuc²,

Lis³

et al. 2022

Diagnostics

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Cephalometric analysis is an essential tool used in orthodontic diagnosis and treatment planning. The main objectives of correct cephalometric analysis include resolving anteroposterior and vertical maxillary and mandibular base discrepancies. For a diagnostic tool to be of value, it should be precise, reliable and reproducible. Unfortunately, according to some studies, the accuracy of input and, therefore, the diagnostic reliability of some of the points and measurements may not be satisfactory. To this end, new cephalometric measurements are being developed with increased precision. In order to properly and definitively determine the usefulness of a given measurement in cephalometric diagnosis, it is necessary to carry out a critical evaluation of available studies. The aim of this systematic review was to evaluate the available scientific literature describing new landmarks and reference linear and angular measurements of 2D cephalometric analyses assessing the sagittal and vertical discrepancy in the position of jaw bases since the last systematic review in 2013. The secondary aim was to assess the accuracy and reliability of new anthropometric landmarks and reference planes in relation to those used previously, and their instability in relation to growth and orthodontic tooth movements. To carry out the intended plan, electronic databases such as PubMed, Scholar Google, Web of Science and Pro Quest were searched using specific keywords. Initially, a total of 1451 articles were retrieved. Then, duplicate articles in all databases were excluded from the resulting publications. The results showed that despite such a high number of articles published in peer-reviewed scientific journals, only 12 studies on new cephalometric analyses in the sagittal plane and 4 studies on new cephalometric analyses in the horizontal plane met the criteria and, as a result, were included in the review.

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“…The effectiveness of the use of a plane A, the superior border of the zygomatic arch, was proved by Park, Lee, Koh and Song W.C. [ 18 ].…”

Section: Discussion Of Outcomesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Superior border of the zygomatic arch to assess the vertical discrepancy as an alternative to the Frankfurt horizontal line introduced by Park et al in 2019 [ 18 ]…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

New Sagittal and Vertical Cephalometric Analysis Methods: A Systematic Review

Kotuła

Kuc²,

Lis³

et al. 2022

Diagnostics

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show abstract

“…The three established orthogonal planes formed the basis for the 3-D-navigation, for the measurements of the horse's head and brain, and for the distance calculations. In human medicine, similar patient-related Coordinate Systems and reference planes (like the Frankfurt Plane) are commonly used in imaging or surgery [14,29].…”

Section: Discussionmentioning

confidence: 99%

Extracranial guiding structures for navigation to specific topographical sectors of the equine neopallium: an anatomical investigation performing three-dimensional distance measurements in adult warm-blooded horses

Heun¹,

Böing²,

Theunert³

et al. 2022

Folia Morphol

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This basically anatomical study focuses on two items; firstly, the establishment of a system for the cartographic subdivision of the neopallium; secondly, the topographical correlation of extracranial landmarks and intracranial sites on the neopallium. The surface of the neopallium was subdivided into 15 Sectors with reference to a newly introduced pattern of Primary Sulci. The topographical link between extracranial landmarks and certain intracranial sites (i.e., neopallium Sectors) was elaborated by using a simple stereotactic device and a computer-assisted measurement device.Measurements were performed between points on the head´s outer surface and on the isolated brain.The introduction of an anatomical three-dimensional Coordinate System was an essential key issue for this investigation. This setting facilitated the measurements and calculations of the so-called Indirect Distances that were characterized by their alignment along the three orthogonal axes (x, y, z) of the anatomical Coordinate System. The inter-individual comparison (16 adult horses [Equus caballus]) of the Indirect Distances revealed that each Sector Center lay within a distinct morphometric Residence Area. The measured and calculated data also showed that each Sector Center could be assigned to its proper extracranial landmark thatin comparison with other landmarkswas best suited for the optimal allocation of the Sector Center Point.

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Detection and diagnosis of cleidocranial dysplasia by panoramic radiography: a retrospective study

Shi

Liu

et al. 2022

BMC Oral Health

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Background Cleidocranial dysplasia (CCD) is a rare and underdiagnosed congenital disorder in dentistry. The purpose of this study was to illustrate and quantify the maxillofacial bone abnormalities detected on panoramic radiographs from a relatively large retrospective case series and to provide a series of diagnostic references for dentists to indicate the presence of disease and help in making an early and accurate diagnosis. Methods The dental panoramic radiographs of thirty CCD patients aged 11 to 45 years (18 males and 12 females) were examined retrospectively. The dentition states, including supernumerary teeth and impacted teeth, were recorded. Twelve quantified measurements were adopted to determine the abnormalities of maxillofacial bones, including the degree of the zygomatic arch downward bend, bicondylar breadth, ramal height, mandibular height, mandibular aspect ratio, mandibular body height, condylar height, coronoid height, distance between the coronoid process and the condyle, bigonial width, gonial angle and best-fit gonial circle diameter. The Wilcoxon rank-sum test was used to compare the findings of the CCD patients with those of their matched controls (n = 300). Results Supernumerary teeth were detected in 27 patients (90.0%), and all 30 patients presented impacted teeth. Compared to the matched controls, the CCD patients had a significantly larger degree of zygomatic arch downward bend (ZAD), a larger diameter of the best-fit gonial circle (BGC), and a shorter distance between the coronoid process and the condyle (DCC) in panoramic radiographs (P < 0.001). According to the reference cutoff values established from the 5th or 95th percentile of the measurements in the control group, ZAD higher than 6.90 mm, DDC less than 22.37 mm and BGC higher than 52.41 mm were significantly associated with the CCD features identified. Other panoramic measurements were not significantly different between the two groups. Conclusions Panoramic radiographs had great value in the diagnosis of CCD. In this study, we identified some dental and maxillofacial features on panoramic radiographs from a relatively large retrospective case series of CCD. A series of reliable quantitative indicators were provided for dentists that can indicate the presence of disease and improve the diagnostic specificity.

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Using the zygomatic arch as a reference line for clinical applications and anthropological studies

Cited by 5 publications

References 19 publications

New Sagittal and Vertical Cephalometric Analysis Methods: A Systematic Review

New Sagittal and Vertical Cephalometric Analysis Methods: A Systematic Review

Extracranial guiding structures for navigation to specific topographical sectors of the equine neopallium: an anatomical investigation performing three-dimensional distance measurements in adult warm-blooded horses

Detection and diagnosis of cleidocranial dysplasia by panoramic radiography: a retrospective study

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