نتایج جستجو برای: width ratio
تعداد نتایج: 559383 فیلتر نتایج به سال:
Proper occlusion depends on the correct width ratio between upper and lower teeth, known as Bolton's ratio. In fact, this ratio can be calculated for each pair of teeth from the central incisor to the first permanent molar. This set of ratios, known as comprehensive cumulative percentage ratios (CPRs), can be used not only to determine which tooth or teeth have a tooth width discrepancy, but ca...
A geometric graph in the plane is angle-monotone of width γ if every pair of vertices is connected by an angle-monotone path of width γ, a path such that the angles of any two edges in the path differ by at most γ. Angle-monotone graphs have good spanning properties. We prove that every point set in the plane admits an angle-monotone graph of width 90◦, hence with spanning ratio √ 2, and a subq...
In order to investigate the relationship between morphological properties and choose suitable criteria for improving this research yield on ten new breeding lines and varieties of rice (control) modified rice cultivation area (Shiroodi cultivar) in the crop during 2010 in Tonekabon Rice Research Station in a randomized complete block design with four replications. The results showed that rice g...
The aim of this study was to develop a method for estimating the chronological age of Indian adults based on the relationship between age and various morphological variables of canine teeth, obtained using orthopantomographs. Orthopantomographs of 120 selected patients were digitized, and radiographic images of the right maxillary canine in each case were processed using a computer aided drafti...
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