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Article | 05-September-2021

A new reciprocal Rayleigh extension: properties, copulas, different methods of estimation and a modified right-censored test for validation

In this article, a new reciprocal Rayleigh extension called the Xgamma reciprocal Rayleigh model is defined and studied. The relevant statistical properties are derived, and the useful results related to the convexity and concavity are addressed. We discussed the estimation of the parameters using different estimation methods such as the maximum likelihood estimation method, the ordinary least squares estimation method, the weighted least squares estimation method, the Cramer-Von-Mises

Haitham M. Yousof, M. Masoom Ali, Hafida Goual, Mohamed Ibrahim

Statistics in Transition New Series, Volume 22 , ISSUE 3, 99–121

Article | 15-August-2021

Effects of the Herbst appliance in growing orthodontic patients with different underlying vertical patterns

its use will be associated with clinically significant forward rotation in dolichofacial subjects. Since dolichofacial patterns are likely to remain long-faced, even after considerable Class II dental correction, orthognathic surgery may still be a consideration if normal facial proportions, without excessive facial convexity and lip strain, are treatment aims.

Emily Deen, Michael G. Woods

Australasian Orthodontic Journal, Volume 31 , ISSUE 1, 59–68

Article | 20-July-2021

Facial soft tissue norms in Caucasians using an innovative three-dimensional approach

sample population. Methods: Three-dimensional facial surface data (3dMDface) were obtained from 375 young adult Caucasians (195 males and 180 females, all approximately 22 years old) without craniofacial anomalies, all of whom were participants in The Raine Study in Western Australia with participants from Generation 2. These data were used to generate seven faces that represented the variations in convexity distributed evenly around an average. The faces were subsequently rated by orthodontists

Anand Ponnusamy, Mithran S. Goonewardene, Ajmal Mian, Peter Eastwood, Alethea Rea, Syed Islam

Australasian Orthodontic Journal, Volume 36 , ISSUE 1, 45–54

Article | 30-July-2021

Cephalometric assessment of soft tissue morphology of patients with acromegaly

the Student’s t-test. Results: Facial convexity (p < 0.01) and the nasolabial angle (p < 0.001) were reduced in patients with acromegaly, whereas nose prominence (p < 0.01), upper lip sulcus depth (p < 0.01), upper lip thickness (p < 0.01), basic upper lip thickness (p < 0.01), lower lip protrusion (p < 0.05), mentolabial sulcus depth (p < 0.05) and soft tissue chin thickness (p < 0.001) were increased. Anterior cranial base length (p < 0.05), the supraorbital

Nehir Canigur Bavbek, Burcu Balos Tuncer, Cumhur Tuncer, Kahraman Gungor, Cigdem Ozkan, Emre Arslan, Alev Eroglu Altinova, Mujde Akturk, Fusun Balos Toruner

Australasian Orthodontic Journal, Volume 32 , ISSUE 1, 48–54

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