Determination of individual linear and angular characteristics of the position of upper central incisors in Ukrainian young men and women with orthognathic bite

Taking into account the importance of determining the teleroentgenographic indicators of the spatial position of central incisors, arises a scientific and clinical interest in conducting such studies. The purpose of the study is to develop mathematical models of individual characteristics of the position of upper central incisors in young men and women of Ukraine with orthognathic bite by studying the cephalometric indices and conducting direct stepwise regression analysis. With the help of Veraviewepocs 3D device, Morita (Japan) 38 young men (aged 17 to 21 years) and 55 young women (aged 16 to 20 years) with occlusion close to orthognathic bite and balanced faces received side teleroentgenograms. Cephalometric analysis was performed using OnyxCeph³™ software. Cephalometric points and measurements were performed according to the recommendations of A.M. Schwarz, J. McNamara, W.B. Downs, R.A. Holdway, P.F. Schmuth, C.C. Steiner and C.H. Tweed. In the licensed statistical package “Statistica 6.0”, using the direct stepwise regression analysis, the following teleroentgenographic characteristics of the position of the upper central incisors were performed: distance 1u_APog, distance 1u_Avert, distance 1u_NA, angle Max1_NA, angle Max1_SN and angle Max1_SpP. In young men and women with occlusion close to orthognathic bite and balanced face, reliable regression models of individual teleroentgenographic characteristics of the position of upper central incisors with a determination coefficient of greater than 0.50 have been developed, depending on the peculiarities of the metric characteristics of the craniofacial complex: in young men of 6 possible models, have been constructed 5 with coefficients of determination R2 from 0.672 to 0.928, and for young women – all 6 possible models with determination coefficient R2 from 0.508 to 0.663. In the analysis of models with a determination coefficient higher than 0.50, it was found that in young men most often the regression equations include - the angle AB_NPOG (12.0%); distance COND_GN, inclination angle I, MAX maxillary length, Se_N distance, Nap angle, NBa-PtGn angle, SND angle and Wits indicator (by 8.0%). In young women most often models include – the angle AB_NPOG and the Wits indicator (by 15.4%); angle N_POG (11.5%); the angle Gl’SnPog’ and the distance LPALAT (by 7.7%).

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Determination of individual teleroentgenographic characteristics of the face profile in ukrainian young men and girls with orthognathic bite

Biomedical and Biosocial Anthropology ◽

10.31393/bba32-2018-04 ◽

2018 ◽

pp. 28-34

Author(s):

М. О. Dmitriev

Keyword(s):

Regression Analysis ◽

Soft Tissue ◽

Young Women ◽

Stepwise Regression ◽

Young Men ◽

Stepwise Regression Analysis ◽

Regression Equations ◽

Determination Coefficient ◽

Normal Occlusion

Modern dentistry requires the definition of individualized values of teleroentgenographic indicators. To solve such problems, methods of regression and correlation analysis are increasingly used, which help to establish not only the existence of various relationships between the anatomical structures of the head and the parameters of the dento-jaw system, but also allow more accurately predict the change in the contour of soft facial tissue in response to orthodontic treatment. The purpose of the study is to develop mathematical models for the determination of individual teleroentgenographic characteristics of the facial soft tissues by studying the cephalometric indices of young men and women of Ukraine with normal occlusion and balanced faces and conducting a direct stepwise regression analysis. With the use of Veraviewepocs 3D device, Morita (Japan) from 38 young men (17 to 21 years of age) and 55 young women (aged from 16 to 20 years) with occlusal close to the orthognathic bite and balanced faces received side teleroentgenograms. The cephalometric analysis was performed using OnyxCeph³™ licensed software. Cephalometric points and measurements were made according to the recommendations of Downs W. B., Holdway R. A., McNamara J., Schwarz A. M., Schmuth G. P. F., Steiner C. C. and Tweed C. H. With the help of direct stepwise regression analysis, in the licensed package “Statistica 6.0”, regression models of individual teleroentgenographic characteristics of the profile of soft facial tissues were constructed. In young men with normal occlusion close to the orthognathic bite of 19 possible models, 11 were constructed with a determination coefficient from 0.638 to 0.930, and in young women – 12 models with a determination coefficient from 0.541 to 0.927. The conducted analysis of models showed that in young men most often the regression equations included – angle N_POG, parameters of which indicate a linear interjaw relation in the anterior-posterior direction (14.0%); angle GL_SNPOG, or index of convexity of the soft tissue profile (8.8%); MAX maxillary length (7.0%), and GL_SN_S index, which defines vertical correlations in the facial profile (5.3%). The young women most often models included – the angle N_POG (12.5%); angle GL_SNPOG (7.5%); soft tissue front angle P_OR_N (6.25%); the reference angle ML_NL and the profile angle T (by 5.0%); the angle AB_NPOG, the angle NBA_PTGN, which defines the direction of development of the mandible and the distance PN_A (3.75%). Thus, in the work with the help of the method of stepwise regression with inclusion, among Ukrainians of adolescence age, based on the characteristics of teleroentgenographic indicators, reliable models of individual teleroentgenographic characteristics of the profile of soft facial tissues were developed and analyzed.

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Determination of individual teleroentgenographic characteristics of the lower medial incisors position in Ukrainian young men and young women with orthognathic bite

Reports of Morphology ◽

10.31393/morphology-journal-2018-24(3)-03 ◽

2018 ◽

Vol 24 (3) ◽

pp. 19-25

Author(s):

M.O. Dmitriev ◽

I.V. Gunas ◽

I.V. Dzevulska ◽

A.A. Glushak

Keyword(s):

Regression Analysis ◽

Young Women ◽

Stepwise Regression ◽

Young Men ◽

Individual Characteristics ◽

Regression Equations ◽

Determination Coefficient ◽

Straight Line ◽

Age Features

Ethnic, sexual and age features of the incisors positions point to the need for the development of techniques that allow to determine their individual characteristics, since commonly accepted standards recommended for optimal positioning of incisors can only be used as indicative. The purpose of the study – by studying teleroentgenographic indices and conducting direct stepwise regression analysis in young men and young women of Ukraine with orthognathic bite, to develop and analyze the mathematical models of individual characteristics of the position of the lower medial incisors. With the Veraviewepocs 3D device, Morita (Japan) in 38 young men (17 to 21 years of age) and 55 young women (aged from 16 to 20 years) with occlusion close to orthognathic bite and balanced faces received side teleroentgenograms. Cephalometric analysis was performed using OnyxCeph3TM software. Cephalometric points and measurements were performed according to the recommendations of A.M. Schwarz, J. McNamara, W.B. Downs, R.A. Holdway, P.F. Schmuth, C.C. Steiner and C.H. Tweed. According to the above methods, in the licensed package “Statistica 6.0” using direct straight line regression analysis, the teleroentgenographic characteristics of the position of the lower medial incisors (distance 1l_NB, distance 1l_APog, angle 1l_DOP, IMPA angle, Mand1_NB angle, FMIA angle and Mand1_MeIm angle) were performed. In young men with orthognathic bite of 7 possible models of teleroentgenographic characteristics of the lower medial incisors, 5 were constructed with determination coefficient R2 from 0.694 to 0.849, and in young women, all 7 possible models with determination coefficient R2 from 0.595 to 0.794. In young men most often the regression equations included - the angle ANB and facial vertical index GL_SN_S (by 11.5%); lower face height ANS_ME, face angle NBA_PTGN and distance S_E (by 7.7%). In young women most often the regression equations included – the angle of N_POG (16.7%); Wits indicator (13.9%); inclination angle I (8.3%); H-angle, maxillo-mandibular angle MM and angle of facial axis NBA_PTGN (by 5.6%). Thus, in the work with the help of the method of stepwise regression with inclusion, among Ukrainians of juvenile age, on the basis of features teleroentgenographic indicators, the analysis of reliable models of individual teleroentgenographic characteristics of the position of the lower medial incisors was developed and carried out.

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Determination of individual cephalometric characteristics of the occlusal plane in Ukrainian young men and young women with orthognatic bite

Biomedical and Biosocial Anthropology ◽

10.31393/bba33-2018-1 ◽

2018 ◽

pp. 5-11 ◽

Cited By ~ 2

Author(s):

M. O. Dmitriev ◽

I. V. Gunas ◽

I. V. Dzevulska ◽

I. V. Zhulkevych

Keyword(s):

Regression Analysis ◽

Young Women ◽

Stepwise Regression ◽

Young Men ◽

Individual Characteristics ◽

Occlusal Plane ◽

Regression Equations ◽

Men And Women ◽

Normative Basis

To date, there are no clear recommendations on the use of a particular indicator, cephalometric method, normative basis for the inhabitants of Ukraine when assessing the cephalometric characteristics of the occlusal plane. The purpose of the study - by studying cephalometric indices and conducting direct stepwise regression analysis - develop in young men and women of Ukraine with orthognathic bite mathematical models of individual characteristics of the position of the occlusal plane. In 38 young men (aged 17-21 years) and 55 young women (aged from 16 to 20 years) with occlusion close to orthognathic bite and balanced faces, lateral teleroentgenograms were obtained using the Veraviewepocs 3D device, Morita (Japan). Cephalometric analysis was performed using OnyxCeph³™ software. Cephalometric points and measurements were performed according to the recommendations of W. B. Downs, J. McNamara, R. A. Holdway, P. F. Schmuth, A. M. Schwarz, C. C. Steiner and C. H. Tweed. In the licensed statistical package "Statistica 6.0", using regression analysis, the following teleroentgenographic characteristics of the position of the occlusal plane were simulated: the angle YGOCLPl, the angle POR_DOP, the angle POR_OCP, and the SN_OSP angle. It was established that in both young men and women, all four possible models with a determination coefficient from 0.808 to 0.998 in young men and from 0.832 to 0.974 in young women were constructed. In the analysis of models of teleroentgenographic characteristics of the position of the occlusal plane, depending on the peculiarities of the metric characteristics of the craniofacial complex, it was found that in young men the most frequent regression equations include - the Wits indicator (21.1% for all four equations), the angle AB_NPOG (15.8%) and the distance PN_POG (10.5%). In young women, most often the regression equations include - Wits indicator (17.4% - also to all 4 equations); angle AB_NPOG, distance AFH, angle MM and angle SN_GoGn (by 8.7%). So, using the method of stepwise regression, among Ukrainians of juvenile, based on the features of teleroentgenographic indicators, reliable models of individual cephalometric characteristics of the occlusal plane were created.

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Determination of individual angular characteristics of the teeth positions according to the computer tomography in Ukrainian adolescents with orthognathic bite

Biomedical and Biosocial Anthropology ◽

10.31393/bba31-2018-06 ◽

2018 ◽

pp. 44-52

Author(s):

М. О. Dmitriev ◽

K. S. Volkov ◽

A. A. Glushak ◽

Yu. V. Kyrychenko ◽

M. V. Balynska ◽

...

Keyword(s):

Regression Analysis ◽

Young Women ◽

Computer Tomography ◽

Stepwise Regression ◽

Young Men ◽

Stepwise Regression Analysis ◽

Computer Tomographic ◽

Determination Coefficient ◽

Lower Canine ◽

The Individual

The lack of the ability to determine the individual standard angle characteristics of the position of the teeth and the technical provision of their control often does not lead to the expected result and in each case requires individualization, the vision of which is based, as a rule, on the experience and intuition of the doctor. In order to solve such a situation, in addition to improving the positioning protocols of the non-removable equipment, the physician should be able to clearly identify the individual angular characteristics of the tooth-jaw system. The purpose of the study – by studying computer tomography and cephalometric indices and conducting direct stepwise regression analysis to develop in Ukrainian adolescents with orthognathic bite mathematical models of individual angular positions of teeth. Using the Veraviewepocs 3D device, Morita (Japan) at 38 young men (aged from 17 to 21) and 55 young women (aged from 16 to 20 years) with normal occlusion close to orthognathic bite received and analyzed dental tomograms and lateral teleroentgenograms. Cephalometric points and measurements were performed according to recommendations of A. M. Schwarz, J. McNamara, W. B. Downs, R. A. Holdway, G. P. F. Schmuth, C. C. Steiner and C. H. Tweed. Anatomical points were determined taking into account the recommendations of A. E. Athanasiou and S. I. Doroshenko and Y. A. Kulginsky. The simulation of CT indexes describing the position of individual teeth relative to each other, to the bone cranial structures and the profile of adolescents with orthognathic bite, depending on the metric characteristics of the skull, which are usually unchanged during surgical and orthodontic treatment, as well as the width, lengths, angles and positions of the upper and lower jaws that may be altered by orthodontic surgery done. The statistical processing of the obtained results was carried out in the license package “Statistica 6.0” using a direct stepwise regression analysis. It was found that in young men of 40 possible models, 23 were constructed with a determination coefficient R2 of 0.557 to 0.832, while in young women, only 8 models with a determination coefficient R2 of 0.581 to 0.832. Moreover, in the young men – of 10 possible 9 models of vestibular-tongue inclination of corresponding teeth (R2 from 0.557 to 0.832) were constructed; out of 10 possible 5 models of mesio-distal inclination of corresponding teeth (R2 from 0.558 to 0.769) constructed; of the possible 14 constructed 6 models of rotation of the corresponding teeth (R2 from 0.579 to 0.737); and in young women - there are only 5 models of vestibular-tongue inclination of the corresponding teeth (R2 from 0.603 to 0.665). In addition, in both young men and young women, models of the size of the inter-incision angle (R2 0.748 in young men and 0.581 in young women) were constructed, the magnitude of the angle of inclination of the lower canine in the jet plane (R2 respectively 0.729 and 0.793), and the magnitude of the inclination of the closure planes relative to the palatal plane (R2 respectively 0.808 and 0.832). In the analysis it was found that in young men, most frequently models included - indicator WITS (7.0%); angle GL_SNPOG (5.4%); distance S_E, angle ММ, angle NSBA (by 4.7%); angle AB_NPOG, angle N_POG_, distance N_SE, coefficient N_SP_SP, angle P_OR_N (by 3.9%). In young women, most frequently models included – angle N_POG_ (14.3%); angle AB_NPOG (10.2%); indicator WITS (8.2%); angle ММ, angle ANB, length of the branch of the mandible R_ASC (by 6.1%). Thus, in the work with the help of the method of step-by-step regression with inclusion, among Ukrainian adolescence, on the basis of peculiarities of computer-tomographic and teleroentgenography indices, reliable models of computer-tomographic individual linear angular characteristics of the position of teeth necessary for constructing the correct three-dimensional geometry of dental arches are developed and analyzed.

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The Effect Of Marital Status On The Standard Of Living Of Young Men And Women

Journal of Business & Economics Research (JBER) ◽

10.19030/jber.v2i1.2848 ◽

2011 ◽

Vol 2 (1) ◽

Author(s):

Michael C. Seeborg

Keyword(s):

Young Adults ◽

Regression Analysis ◽

Marital Status ◽

Young Women ◽

Young Men ◽

Longitudinal Survey ◽

The Other ◽

Standard Of Living ◽

Font Size ◽

Men And Women

The National Longitudinal Survey of Youth data base is used to explore the effects of changes in marital status on the standard of living of a sample of young adults. OLS regression analysis indicates that changes in marital status have very different effects on young women and young men.  Women receive large increases in their income-to-needs ratios when they marry, and they incur large declines in their income-to-needs ratios after experiencing a divorce or separation.  Men, on the other hand, do not experience significant changes in their income-to-needs ratios when their marital status changes.

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Regression models of individual cephalometric indicators used in the method of E.P. Harvold

Reports of Morphology ◽

10.31393/morphology-journal-2018-24(4)-04 ◽

2018 ◽

Vol 24 (4) ◽

pp. 29-34

Author(s):

A.V. Chernysh ◽

P.A. Hasiuk ◽

V.V. Yasko ◽

D.G. Smolko

Keyword(s):

Young Women ◽

Regression Models ◽

Young Men ◽

Regression Equations ◽

Linear Measurements ◽

Men And Women ◽

The Third ◽

Normal Occlusion ◽

Reliable Model ◽

The Difference

Many scientific studies have shown the superiority of the Harvold method when performing linear measurements for both the upper and lower jaw. The purpose of the work is to construct and analyze the regression models of teleroentgenographic indices used in the method of E.P. Harvold young men and women with normal occlusion close to orthognathic bite and harmonic face. The analysis of lateral teleroentgenograms of 38 young men (aged from 17 to 21) and 55 young women (aged from 16 to 20 years) with normal occlusion close to orthognathic bite and harmonic face, obtained using the Veraviewepocs 3D device, Morita (Japan), was performed according to the techniques of R.M. Ricketts, C.J. Burstone, E.P. Harvold. In the course of the study, all the indicators of the above methods, were divided into three groups: 1 – metric characteristics of the skull, which usually do not change during surgical and orthodontic treatment; 2 – indicators of the tooth-jaw system that allow people with already formed bone skeleton to 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. In the licensed package “Statistica 6.0”, regression models were constructed for the following parameters included in the second group, depending on the parameters of the first group: ANS-Сond (maxillary length in the Harvold method described as TM-ANS), Pog-Cond (mandibular length in the E.P. Harvold method is indicated as TM-PGN), Max-Mand – (difference in jaw lengths); as well as the index included in the third group, depending on the indicators of the first and second groups – Ap1uAp1l-DOP (angle Ap1uAp1l-DOP). In the young men, all three possible reliable models of teleroentgenographic parameters were constructed using the E.P. Harvold method, which were included in the second group, depending on the indicators of the first group (R2 = from 0.616 to 0.940), and in young women only the length of the upper and lower jaws (R2=0.857 and 0.792). In both young men and women, all models of the second group of models built according to the indicators of the first group included the distance P-PTV. Up to two models for young men and one model for young women included the distance Pt-N. Also, one model for young men and women included the angle of the cranial tilt (POr-NBa). Only young women have models for the front length of the skull base (N-CC). As for young men and women, we also built a reliable model of the third group indicator, depending on the indicators of the first and second groups (the angle Ap1uAp1l-DOP) (respectively, R2=0.626 and R2=0.584). And in young men and women, the size of the distance A-B is included to the constructed regression equations. In addition, in young men, the regression equation includes the value of the distance P-PTV; while in young women - the angles of the ANS-Xi-PM, MeGo-NPog and N-CF-A, as well as the difference in jaw lengths Max-Mand.

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Determinants of In-Hospital Mortality in Elderly Patients Aged 80 Years or above with Acute Heart Failure: A Retrospective Cohort Study at a Single Rural Hospital

Journal of Clinical Medicine ◽

10.3390/jcm10071468 ◽

2021 ◽

Vol 10 (7) ◽

pp. 1468

Author(s):

Yusuke Watanabe ◽

Kazuko Tajiri ◽

Hiroyuki Nagata ◽

Masayuki Kojima

Keyword(s):

Heart Failure ◽

Regression Analysis ◽

Elderly Patients ◽

Hospital Mortality ◽

Acute Heart Failure ◽

Stepwise Regression ◽

Stepwise Regression Analysis ◽

Antibiotic Administration ◽

Very Elderly ◽

Survivor Group

Heart failure is one of the leading causes of mortality worldwide. Several predictive risk scores and factors associated with in-hospital mortality have been reported for acute heart failure. However, only a few studies have examined the predictors in elderly patients. This study investigated determinants of in-hospital mortality in elderly patients with acute heart failure, aged 80 years or above, by evaluating the serum sodium, blood urea nitrogen, age and serum albumin, systolic blood pressure and natriuretic peptide levels (SOB-ASAP) score. We reviewed the medical records of 106 consecutive patients retrospectively and classified them into the survivor group (n = 83) and the non-survivor group (n = 23) based on the in-hospital mortality. Patient characteristics at admission and during hospitalization were compared between the two groups. Multivariate stepwise regression analysis was used to evaluate the in-hospital mortality. The SOB-ASAP score was significantly better in the survivor group than in the non-survivor group. Multivariate stepwise regression analysis revealed that a poor SOB-ASAP score, oral phosphodiesterase 3 inhibitor use, and requirement of early intravenous antibiotic administration were associated with in-hospital mortality in very elderly patients with acute heart failure. Severe clinical status might predict outcomes in very elderly patients.

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Diet, Exercise, Lifestyle, and Mental Distress among Young and Mature Men and Women: A Repeated Cross-Sectional Study

Nutrients ◽

10.3390/nu13010024 ◽

2020 ◽

Vol 13 (1) ◽

pp. 24

Author(s):

Lina Begdache ◽

Saloumeh Sadeghzadeh ◽

Gia Derose ◽

Cassandra Abrams

Keyword(s):

Young Women ◽

Fast Food ◽

Mental Distress ◽

Young Men ◽

Brain Morphology ◽

Mental Wellbeing ◽

Caffeine Consumption ◽

Cross Sectional ◽

Men And Women ◽

Negatively Associated

Customization of mental health therapies needs to consider the differences in degree of brain maturity between young (18–29 years) and mature (30 years or older) adults as well as brain morphology among men and women. The aim of this study was to identify the significant dietary and lifestyle contributors to mental distress in these sub-populations. Independent repeated cross-sectional sampling was performed for over a 5-year period (2014–2019) to collect data from different populations at different time-points and seasons. A backward stepwise regression analysis was used on 2628 records. Mental distress in young women was associated with high consumption of caffeine and fast-food, and it was negatively correlated with moderate-high levels of exercise as well as frequent breakfast consumption. Mature women shared several common factors with young women; however, high fruit consumption was negatively associated with mental distress. For young men, high exercise, moderate consumption of dairy, and moderate-high intake of meat were negatively associated with mental distress. In addition, high fast-food and caffeine consumption were positively associated with mental distress in young men. For mature men, strong negative associations between higher education, moderate intake of nuts and mental distress surfaced. Our results support the need to customize dietary and lifestyle recommendations to improve mental wellbeing.

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