Coefficient of regression to predict skeletal patterns for nongrowing subjects using gonial angle on orthopantomogram

The purpose of this study are: 1) To explain the presence or absence of influence of leadership style, organizational culture and job satisfaction on employee performance at Bhayangkara Padang Hospital. and 2) Measuring the magnitude of influence of leadership style, organizational culture and job satisfaction on employee performance at Bhayangkara Padang Hospital. The samples used in this study were 85 respondents by using saturated sampling. This research is an explanatory research. Data collection techniques are questionnaires. Data analysis techniques using Descriptive Analysis and Inferential Analysis. To know the influence of independent variable to dependent variable partially, used t test. While to know the influence of independent variable to dependent variable simultaneously, used F test. The assumption used in validity test is if R-count> R-table item declared valid. Based on the instrument validity test the influence of leadership style, organizational culture and job satisfaction on the performance of employees known all items declared valid and reliable. The Leadership Regression Coefficient (X1) of 0.608, marked as positive indicates Leadership (X1) influences the direction of Performance (Y), which means that each increase of 1 unit of Leadership (X1) will cause the effect on Performance (Y) of 0.608 The coefficient of regression of Organizational Culture (X2) equal to 0,127, marked positive indicate Organizational Culture (X2) have influence on Performance (Y), meaning every increase of 1 unit of Organizational Culture variable (X2) will cause influence to Performance equal to 0,127 The coefficient of regression of Job Satisfaction (X3) is 0,305, marked as pos itive indicating Job Satisfaction (X3) influential in the direction of Performance (Y), which mean every increase of 1 unit of Job Satisfaction variable (X3) Leadership independent variable (X1) has a significant effect on Performance (Y), Organizational Culture (X2) has a significant effect on Performance (Y), Job Satisfaction variable (X3) has significant effect on Performance (Y). The First Hypothesis (H1), Second Hypothesis (H2) and Third Hypothesis (H3) are proven and accepted.

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Accuracy and Reproducibility of Facial Measurements of Digital Photographs and Wrapped Cone Beam Computed Tomography (CBCT) Photographs

Diagnostics ◽

10.3390/diagnostics11050757 ◽

2021 ◽

Vol 11 (5) ◽

pp. 757

Author(s):

Maged Sultan Alhammadi ◽

Abeer Abdulkareem Al-mashraqi ◽

Rayid Hussain Alnami ◽

Nawaf Mohammad Ashqar ◽

Omar Hassan Alamir ◽

...

Keyword(s):

Computed Tomography ◽

Soft Tissue ◽

Cone Beam Computed Tomography ◽

High Reliability ◽

Three Dimensional ◽

Cone Beam ◽

Cross Sectional ◽

Facial Profile ◽

Digital Photographs ◽

Gonial Angle

The study sought to assess whether the soft tissue facial profile measurements of direct Cone Beam Computed Tomography (CBCT) and wrapped CBCT images of non-standardized facial photographs are accurate compared to the standardized digital photographs. In this cross-sectional study, 60 patients with an age range of 18–30 years, who were indicated for CBCT, were enrolled. Two facial photographs were taken per patient: standardized and random (non-standardized). The non-standardized ones were wrapped with the CBCT images. The most used soft tissue facial profile landmarks/parameters (linear and angular) were measured on direct soft tissue three-dimensional (3D) images and on the photographs wrapped over the 3D-CBCT images, and then compared to the standardized photographs. The reliability analysis was performed using concordance correlation coefficients (CCC) and depicted graphically using Bland–Altman plots. Most of the linear and angular measurements showed high reliability (0.91 to 0.998). Nevertheless, four soft tissue measurements were unreliable; namely, posterior gonial angle (0.085 and 0.11 for wrapped and direct CBCT soft tissue, respectively), mandibular plane angle (0.006 and 0.0016 for wrapped and direct CBCT soft tissue, respectively), posterior facial height (0.63 and 0.62 for wrapped and direct CBCT soft tissue, respectively) and total soft tissue facial convexity (0.52 for both wrapped and direct CBCT soft tissue, respectively). The soft tissue facial profile measurements from either the direct 3D-CBCT images or the wrapped CBCT images of non-standardized frontal photographs were accurate, and can be used to analyze most of the soft tissue facial profile measurements.

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Modelling growth curves of the normal infant’s mandible: 3D measurements using computed tomography

Clinical Oral Investigations ◽

10.1007/s00784-021-03937-1 ◽

2021 ◽

Author(s):

Jan Aart M. Schipper ◽

Manouk J. S. van Lieshout ◽

Stefan Böhringer ◽

Bonnie L. Padwa ◽

Simon G. F. Robben ◽

...

Keyword(s):

Computed Tomography ◽

Growth Models ◽

Normal Growth ◽

Growth Patterns ◽

Ct Scans ◽

Mandibular Ramus ◽

Linear Measurements ◽

Mandibular Growth ◽

Gonial Angle ◽

Mandibular Body

Abstract Objectives Data on normal mandibular development in the infant is lacking though essential to understand normal growth patterns and to discriminate abnormal growth. The aim of this study was to provide normal linear measurements of the mandible using computed tomography performed in infants from 0 to 2 years of age. Material and methods 3D voxel software was used to calculate mandibular body length, mandibular ramus length, bicondylar width, bigonial width and the gonial angle. Intra- and inter-rater reliability was assessed for these measurements. They were found to be sufficient for all distances; intra-class correlation coefficients were all above 0.9. Regression analysis for growth modelling was performed. Results In this multi-centre retrospective study, 109 CT scans were found eligible that were performed for various reasons (e.g. trauma, craniosynostosis, craniofacial abscesses). Craniosynostosis patients had larger mandibular measurements compared to non-craniosynostosis patients and were therefore excluded. Fifty-one CT scans were analysed. Conclusions Analysis showed that the mandible increases more in size vertically (the mandibular ramus) than horizontally (the mandibular body). Most of the mandibular growth occurs in the first 6 months. Clinical relevance These growth models provide insight into normal mandibular development in the first 2 years of life. This reference data facilitates discrimination between normal and abnormal mandibular growth.

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Description of new high yielding forage Avena Sativa L. cultivar ‘Super Green Oats’

Journal of Agriculure and Food ◽

10.52587/jaf030201 ◽

2021 ◽

pp. 17-25

Author(s):

Imtiaz Akram Khan Niazi

Keyword(s):

Avena Sativa ◽

Abiotic Stresses ◽

Arid Region ◽

Forage Yield ◽

Biotic And Abiotic Stress ◽

Biotic And Abiotic Stresses ◽

Fodder Yield ◽

Advanced Line ◽

Check Variety ◽

Coefficient Of Regression

Oat [Avena sativa (L.)] cultivar “Super Green Oats” was developed through conventional breeding methods by the Fodder Research Institute, Sargodha, and released as general cultivar in 2020. Commercial cultivar is an advanced line of “FRI-03” which is derived from cross of parental accessions (No. 668 × No. 632) and subsequent selections in various segregating populations (F2 - F6), through pedigree methods having uniformity > 99%. Cultivar had 9% and 15% forage yield advantage over commercial check “Sargodha-Oat 2011” during 2014 and 2015 station trials while it gave 9% higher fodder yield during 2016-17 during zonal trials over commercial check.. It is green, tall, multi-tillering, with slight later in maturing cultivar and produce light brown seed. It has many desirable forage quality traits, including high palatability (82%), protein content (10%) and had resistance to biotic and abiotic stresses. It flower about 10 days later than standard check variety. Moreover, it has higher stability (coefficient of regression bi = 1.06) calculated over 3 environments for 2 years. Its robust yield combine with high palatability and high protein contents than standard check and resistance to biotic and abiotic stress show that Super Green Oat will be highly useful cultivars in both irrigated and arid region of Punjab Province. Moreover, the cultivar will be potential parent for the development of new pedigrees for the genetic improvement of oat germplasm.

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Oxygen uptake and tetrazolium reduction during skin cycle of the mouse

American Journal of Physiology-Legacy Content ◽

10.1152/ajplegacy.1965.209.1.231 ◽

1965 ◽

Vol 209 (1) ◽

pp. 231-235 ◽

Cited By ~ 7

Author(s):

Ira M. Dushoff ◽

John Payne ◽

Falls B. Hershey ◽

Robert C. Donaldson

Keyword(s):

Oxygen Consumption ◽

Mouse Skin ◽

Growth Cycle ◽

Triphenyl Tetrazolium Chloride ◽

Intact Skin ◽

Tetrazolium Chloride ◽

Quantitative Measurements ◽

Close Relationship ◽

Coefficient Of Regression ◽

Tetrazolium Reduction

Quantitative measurements of oxygen consumption and triphenyl tetrazolium chloride reduction by intact skin were made during various stages of the skin cycle of the mouse. Values are highest during early anagen, when growth is most rapid: Qo2 is 2.47 ± 0.10 (mean ± se) and TTC is 537 ± 24.6. In late anagen the activities decrease 40–50%: Qo2 is 1.24 ± 0.10 and TTC is 315 ± 20.8. There is a close relationship between tetrazolium reduction and oxygen consumption during all phases of the growth cycle of mouse skin. The coefficient of regression of TTC on Qo2 is 163.2 ( P < .001).

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Mandibular Dysmorphology in Unicoronal Synostosis and Plagiocephaly without Synostosis

The Cleft Palate-Craniofacial Journal ◽

10.1597/1545-1569_1996_033_0418_mdiusa_2.3.co_2 ◽

1996 ◽

Vol 33 (5) ◽

pp. 418-423 ◽

Cited By ~ 14

Author(s):

Alex A. Kane ◽

Lun-Jou, Lo ◽

Michael W. Vannier ◽

Jeffrey L. Marsh

Keyword(s):

Body Length ◽

Statistical Significance ◽

Coronoid Process ◽

Therapeutic Interventions ◽

Lateral Side ◽

Tertiary Referral Center ◽

Gonial Angle ◽

Affected Side ◽

Mandibular Body ◽

Ct Data

Patients with unicoronal synostosis (UCS) or plagiocephaly without synostosis (PWS) have distinctive skull dysmorphologies. Associated mandibular dymorphologies have been suspected but not quantified. This study was performed to test the hypothesis that discrete mandibular dysmorphology exists in both UCS and PWS. All patients at a tertiary referral center at a medical school-affiliated children's hospital with confirmed diagnosis of UCS or PWS with adequate pretreatment CT data were included in the study population, which population was comprised of 20 UCS, 23 PWS, and 8 normal infants. Each patient had a head CT scan using 2-mm slices. 3-D images were created using AnalyzeTM, a biomedical imaging program. The mandibles were isolated, and the coordinates of 8 landmarks were sampled from each mandible by a single investigator: a single volume value was measured, and 9 linear distances and 4 angles were calculated. Corresponding measurements from each hemimandible were expressed as ratios of ipsilateral/contra lateral side. In UCS, the affected side was defined as the side ipsilateral to the synostosis; in PWS, the affected side was defined as the side ipsilateral to the occipital flattening. The results from both groups were t tested for statistical significance. For UCS, statistically significant (p < .001) findings included: ipsilateral hemimandibular volume 5% smaller than contralateral; affected hemimandibular body length 1.9% shorter; affected gonial angle 2.6% more acute; affected coronoid process tilted anteriorly 2.5%; and distances from condylion and tip of the coronoid process to the chin landmarks 4% shorter on the affected side. For PWS, significant findings included: affected hemimandibular volume 3.8% larger; ramal height 3.5% shorter; mandibular body length 3% longer; and coronoid process tilted anteriorly by 2.3% on the affected side. In the UCS/PWS comparison, findings included: affected hemimandibular volume in UCS 8.7% less; affected gonial angle in UCS 3% more acute; affected mandibular corpus length in UCS 5% shorter; distances from the condylion and the tip of the coronoid process to the chin landmarks 4% shorter on the affected side in UCS. The hypothesized presence of diagnosis specific mandibular dysmorphology in UCS and PWS is confirmed. This analysis forms the baseline for study of the effects of unperturbed growth or therapeutic interventions upon the dentoskeletal dysmorphology of these anomalies.

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Orthognathic Surgery for Correction of Patients With Mandibular Excess: Don’t Forget to Assess the Gonial Angle

Journal of Oral and Maxillofacial Surgery ◽

10.1016/j.joms.2012.12.012 ◽

2013 ◽

Vol 71 (6) ◽

pp. 1063-1072 ◽

Cited By ~ 7

Author(s):

Marcello Guglielmi ◽

Keith M. Schneider ◽

Giorgio Iannetti ◽

Changyoung Feng ◽

Alan Y. Martinez

Keyword(s):

Orthognathic Surgery ◽

Gonial Angle

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The Value of Lateral Cephalometric Variables Measured by Cephalogram in Sex Determining among Iranians

Global Journal of Health Science ◽

10.5539/gjhs.v9n6p214 ◽

2016 ◽

Vol 9 (6) ◽

pp. 214

Author(s):

Naimeh Farhidnia ◽

Siamak Soltani ◽

Kamran Aghakhani ◽

Sasan Salehi ◽

Leila Khloosy ◽

...

Keyword(s):

Cranial Base ◽

Personal Identification ◽

Effective Length ◽

Cross Sectional ◽

Male And Female ◽

Gonial Angle ◽

Anterior Nasal Spine ◽

Specificity And Sensitivity ◽

Lateral Cephalograms ◽

Cephalometric Measurements

PURPOSE: Sex determination is one of the most important aspects of the personal identification in forensic medicine. The present study thus aimed to assess the value of cephalogram in determining sex by applying eleven linear and an angular cephalometric variables measured on lateral cephalograms among Iranians.METHODS: In a cross-sectional study, 11 linear and 1 angular cephalometric measurements were studied. Those are: basion to anterior nasal spine, upper facial height, length of cranial base, total face height, frontal sinus height, mastoidale to sella-nasion plan, mastoidale to porion-orbital plan, mastoid height from cranial base, mastoid with at the level of cranial base, mandibular effective length (central condyle to prognation), occipitofrontal diameter, and gonial angle. Measurements were assessed in 150 individuals (75 males and 75 females) aged 25 to 54 years. After preparing lateral cephalograms, the cephalometric measurements were analyzed using PACS software. SPSS version 22.0 was used for analysis. P values of 0.05 or less were considered statistically significant.RESULTS: With the exception of gonial angle, comparison of lateral cephalometric indices between two sexs showed greater values in males than in females (p<0.001). In general, almost all of the cephalometric measurements were found reliable to distinguish between male and female sex skulls with a high sensitivity (100%) and specificity (97.3% to 1000%).CONCLUSION: The cephalometric measurements used in this study are able to differentiate with high specificity and sensitivity between male and female skull

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Ranges of moisture-source temperature estimated from Antarctic ice cores stable isotope records over glacial–interglacial cycles

Climate of the Past ◽

10.5194/cp-8-1109-2012 ◽

2012 ◽

Vol 8 (3) ◽

pp. 1109-1125 ◽

Cited By ~ 75

Author(s):

R. Uemura ◽

V. Masson-Delmotte ◽

J. Jouzel ◽

A. Landais ◽

H. Motoyama ◽

...

Keyword(s):

Air Temperature ◽

Ice Core ◽

Ice Cores ◽

Regression Equations ◽

Temperature Changes ◽

Source Temperature ◽

Moisture Source ◽

Isotopic Model ◽

Temperature Proxy ◽

Coefficient Of Regression

Abstract. A single isotope ratio (δD or δ18O) of water is widely used as an air-temperature proxy in Antarctic ice core records. These isotope ratios, however, do not solely depend on air-temperature but also on the extent of distillation of heavy isotopes out of atmospheric water vapor from an oceanic moisture source to a precipitation site. The temperature changes at the oceanic moisture source (Δ Tsource) and at the precipitation site (Δ Tsite) can be retrieved by using deuterium-excess (d) data. A new d record from Dome Fuji, Antarctica spanning the past 360 000 yr is presented and compared with records from Vostok and EPICA Dome C ice cores. In previous studies, to retrieve Δ Tsource and Δ Tsite information, different linear regression equations were proposed using theoretical isotope distillation models. A major source of uncertainty lies in the coefficient of regression, βsite which is related to the sensitivity of d to Δ Tsite. We show that different ranges of temperature and selections of isotopic model outputs may increase the value of βsite by more than a factor of two. To explore the impacts of this coefficient on reconstructed temperatures, we apply for the first time the exact same methodology to the isotope records from the three Antarctica ice cores. We show that uncertainties in the βsite coefficient strongly affect (i) the glacial–interglacial magnitude of Δ Tsource; (ii) the imprint of obliquity in Δ Tsource and in the site-source temperature gradient. By contrast, we highlight the robustness of Δ Tsite reconstruction using water isotopes records.

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A New Orthodontic-Surgical Approach to Mandibular Retrognathia

Bioengineering ◽

10.3390/bioengineering8110180 ◽

2021 ◽

Vol 8 (11) ◽

pp. 180

Author(s):

Francisco Vale ◽

Joana Queiroga ◽

Flávia Pereira ◽

Madalena Ribeiro ◽

Filipa Marques ◽

...

Keyword(s):

Stainless Steel ◽

Orthognathic Surgery ◽

Growth Disorders ◽

Facial Skeleton ◽

Mandibular Bone ◽

Gonial Angle ◽

Lower Canine ◽

Bone Segment ◽

Free Solder ◽

Mandibular Retrognathia

(1) Background: Mandibular deficiency is one of the most common growth disorders of the facial skeleton. Recently, distraction osteogenesis has been suggested as the treatment of choice for overcoming the limitations of conventional orthognathic surgery; (2) Methods: A new custom-manufactured dental-anchored distractor was built and anchored in the first molar and lower canine. It consists of a stainless-steel disjunction screw, adapted and welded to the orthodontic bands through two 1.2 mm diameter connector bars with a universal silver-based and cadmium-free solder; (3) Results: The distractor described can be a useful tool to correct mandibular retrognathia and is better tolerated by patients, especially in severe cases; (4) Conclusions: The dental-anchored distractor increases the anterior mandibular bone segment without affecting the gonial angle or transverse angulation of the segments and avoids posterior mandibular rotation, overcoming the limitations of conventional surgical treatment.

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