Applicability of the Ricketts' posteroanterior cephalometry for sex determination using logistic regression analysis in Hispano American Peruvians

Pérez, Iván E; Chávez, Allison K; Ponce, Darío

doi:10.4103/0975-1475.186371

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…The development and introduction into practice of new instrumental methods of patient examination (namely, teleroentgenography), combined with the development of anthropology (namely, craniology), allowed in the combination to create a unique in its kind -a cephalometric analysis, which is a reliable tool in the work of modern orthodontics [33]. Moreover, the results of this study have found application in other areas of medicine, in particular in forensic medicine [30].…”

Section: Introductionmentioning

confidence: 84%

Regression models of individual cephalometric indicators used in the method of R. M. Ricketts

Черныш

2018

Biomed. and Biosoc. Anthrop.

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It is proved that in the analysis of lateral teleroentgenograms according to different methods distances and angles have their normative indices which differ for persons of different ethnic, gender and age belongings. Therefore, for a full use in the orthodontics R.M. Ricketts method, similar studies are needed in Ukraine. The purpose of the work -in boys and girls with normal occlusion close to the orthognathic bite and harmonious face construct and analyze the regression models of teleroentgenographic indicators used in the method of R. M. Ricketts. Primary lateral teleroentgenograms of 38 young men (aged 17-21 years) and 55 young women (aged from 16 to 20 years) with normal occlusion close to orthognathic bite and harmonic face, obtained from the Veraviewepocs 3D device, Morita (Japan), taken from the bank data of research center of National Pirogov Memorial Medical University, Vinnytsya. Cephalometric measurements were performed according to the recommendations of R. M. Ricketts. All indicators were divided into three groups: 1 -metric characteristics of the skull, which usually do not change during surgical and orthodontic treatment; 2 -tooth-jaw indicators, the definition of which most often guided by performing orthodontic manipulations of patients in children and adolescents, as well as those with already formed bone skeleton when orthodontic surgery can change the width, length, angles and position of the bones of the upper and lower jaws; 3 -indicators that characterize the position of each individual tooth relative to each other, to the bony cranial structures and face profile. The regression models of individual teleroentgenographic indicators used in the R.M. Ricketts methodology are constructed using the "Statistica 6.0" licensing package. Constructed all 2 reliable models of the indicators included in the second group (distance Go-CF and Xi-Pm), depending on the indicators of the first group (in young men R 2 = 0.884 and 0.928, and in young women -0.735 and 0.719); as well as in young men, 7 out of 8 possible reliable models (R 2 = 0.568 to 0.887) of the indicators included in the third group (the magnitude of the distances 6u-6l, Overjet, Overbite, 6u-PTV, 1l-APog, 1u-APog and Xi-OcP ) depending on the indicators of the first and second groups; and only 5 models for young women (6u-PTV, 1l-APog, 1u-APog and Xi-OcP distances, and the magnitude of the Max1-APog angle). In the analysis of entering into the regression models of the relevant predictors, it was found that in young men, among the teleroentgenographic indicators of the first group included in the two models of the second group, is the distance P-PTV, and in young women the front length of the base of the skull N-CC and the back of the skull base Ar-Pt It was also found that among young men among the teleroentgenographic indicators of the first and second groups, which were included in the models of the third group, the most frequent is the value of the distance B-Pog (11.1%); while in young women -distance B-Pog (15.6%) and an angle DC-X...

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Section: Introductionmentioning

confidence: 84%

Regression models of individual cephalometric indicators used in the method of R. M. Ricketts

Черныш

2018

Biomed. and Biosoc. Anthrop.

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“…Semelhante a outros estudos, foi encontrado um número maior de pessoas do sexo feminino na amostra analisada. Esse resultado pode estar relacionado ao fato das mulheres terem maior preocupação com a estética e a saúde [7][8][9][10][11][12] .…”

Section: Discussionunclassified

Análise da tipologia facial através do Índice Vert de Ricketts e do Índice Morfológico Facial

et al. 2021

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Este estudo teve como objetivo avaliar a concordância no diagnóstico da tipologia facial de pacientes em tratamento ortodôntico, através de medidas cefalométricas laterais na Análise de Ricketts e do Índice Morfológico Facial. A amostra foi constituída por 60 indivíduos de ambos os sexos, acima de 18 anos, pertencentes ao curso de pós-graduação em ortodontia das FIP (Faculdades Integradas de Patos – PB, Brasil), avaliados por meio da antropometria direta (Índice Morfológico Facial) e da antropometria indireta (Análise do Índice Vert de Ricketts). Os resultados foram analisados estatisticamente por meio do coeficiente Kappa ponderado. Obteve-se uma pobre concordância entre os dois métodos na determinação do tipo facial. Concluiu-se que a antropometria direta, método consolidado como importante recurso na determinação do tipo facial a partir da altura e largura faciais, não encontrou concordância com os valores do índice Vert da Análise de Ricketts.

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“…In addition, the methods of cephalometric analysis are successfully used in forensic medicine as a method of additional identification. Thus, in the work of M. Dmitriev et al [9] proved the success of the use of cephalometric analysis by C. Steiner of Ukrainian boys and girls; I. Perez et al [23] after analyzing databases of 1296 people were able to build logistic models for 6 cephalometric indicators by Rickett's analysis with an accuracy of 60 % to 70 % to identify male Peruvians of Spanish descent.…”

Section: Introductionmentioning

confidence: 99%

Regression models of individual teleradiographic indicators according to Ricketts method in Ukrainian young men and young women with different face types

Drachevska¹

2021

Rep. of Vinnytsia Nation. Med. Univ.

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Annotation. Anomalies of the dental-jaw system are one of the most difficult challenges of modern orthodontics, and accordingly require the use of modern and evidence-based therapy. To predict the results of treatment and proper planning of orthodontic interventions, a reliable tool in the hands of an orthodontist is cephalometric analysis by the Ricketts method. An important step in the successful implementation of this method of analysis is to conduct a study taking into account ethnicity, age, sex and the influence of facial type on teleradiographic indicators calculated by this method. The aim of the study is to build and analyze regression models of teleradiographic indicators used in the Ricketts method for Ukrainian young men and young women with orthognathic occlusion with different face types. Ricketts teleradiography was performed for 49 young men and 76 young women with orthognathic occlusion. Cephalometric analysis was performed using OnyxCeph³™ software, 3DPro version, Image Instruments GmbH, Germany (software license URSQ-1799). The division into facial types was performed by determining the morphological index of Garson. All indicators were divided into three groups: the first group included the main cephalometric points and measurements used in modern cephalometric analyzes Schwartz, Ricketts, Steiner, Roth-Jarabak, Burstone and Bjork and are parameters that usually do not change during surgery and orthodontic treatment; to the second group – metric dental-jaw characteristics by the Ricketts method by which surgical methods can change the length, width, angles and position of the jaws; to the third group – indicators according to the Ricketts method which characterize the position of each individual tooth relative to each other, cranial structures and the profile of the soft tissues of the face. Regression models of individual teleradiographic indicators are built using the license package "Statistica 6.0". Only reliable models with a coefficient of determination higher than 0.6 were subject to analysis. Of the 13 possible facial features, 9 models of teleradiographic indicators (R² = from 0.691 to 0.834) were included to the second group, depending on the indicators of the first group, and 9 (R² = from 0.640 to 0.910) of the 15 possible models of indicators were included to the third group depending on the indicators of the first and second groups. In young men with a wide type of face, the constructed models of indicators included to the second group, depending on the indicators of the first group, most often include the distance Ar-Go (20.7 %), angle POr-NBa (13.8 %), distances N-S and S-E and the ratio N-S:S-Ar' (10.3 % each); and to the models of indicators included in the third group depending on the indicators of the first and second groups – the angle N-CF-A (12.8 %), the distance Ar-Go (10.3 %), the distances N-CC and A-NPog and angle ANS- Xi-Pm, POr-ANSPNS and DC-Xi-Pm (7.7 % each). In young women with a very wide type of face out of 13 possible built only 2 models of teleradiographic indicators (R² = 0.691 and 0.834) which were included to the second group depending on the indicators of the first group and 5 (R² = from 0.628 to 0.919) of 15 possible models of indicators which entered the third group depending on the indicators of the first and second groups. In young women with a very wide type of face, the constructed models of indicators included in the third group, depending on the indicators of the first and second groups, most often include the distance Xi-Pm (18.2 %), as well as the distance P-PTV and angles MeGo-NPog and POr-CFXi (9.1 % each). In young women with a wide type of face from 13 possible 5 models of teleradiographic indicators (R² = from 0.606 to 0.854) which were included in the second group depending on indicators of the first group and 7 (R² = from 0.607 to 0.888) from 15 possible models of indicators which were entered to the third group depending on the indicators of the first and second groups. In young women with a wide type of face, the constructed models of indicators included in the second group, depending on the indicators of the first group, most often include the distance Ar-Go (28.6 %) and the angle POr-NBa and the ratio S-ar:ar-Go (14.3 %), and to the models of indicators included in the third group depending on the indicators of the first and second groups – the distances A-NPog and Xi-Pm and the angle NBa-PtG (10.3 % each).

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Applicability of the Ricketts' posteroanterior cephalometry for sex determination using logistic regression analysis in Hispano American Peruvians

Cited by 6 publications

References 17 publications

Regression models of individual cephalometric indicators used in the method of R. M. Ricketts

Regression models of individual cephalometric indicators used in the method of R. M. Ricketts

Análise da tipologia facial através do Índice Vert de Ricketts e do Índice Morfológico Facial

Regression models of individual teleradiographic indicators according to Ricketts method in Ukrainian young men and young women with different face types

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