This study has been designed to evaluate the vertical and sagittal changes in the maxilla due to growth. A sample group was chosen of 38 individuals with normal occlusion, composed of 16 females and 22 males between the ages of 8 and 18. The total sample was divided into three groups: prepubescent (8-11 years), pubescent (12-14 years) and post-pubescent (15-18 years). A series of cephalometric ...

OBJECTIVE This study assessed the anterior-posterior positioning of the upper and lower first molars, and the degree of rotation of the upper first molars in individuals with Class II, division 1, malocclusion. METHODS Asymmetry I, an accurate device, was used to assess sixty sets of dental casts from 27 females and 33 males, aged between 12 and 21 years old, with bilateral Class II, division...

Energy efficiency is considered as a critical requirement for wireless sensor networks. As more wireless sensor nodes are equipped with multi-cores, there are emerging needs for energy-efficient real-time scheduling algorithms. The T-L plane-based scheme is known to be an optimal global scheduling technique for periodic real-time tasks on multi-cores. Unfortunately, there has been a scarcity of...

Let ? be an open connected subset of the complex plane C and let T be a bounded linear operator on a Hilbert space H. For ? in ? let e the orthogonal projection onto the null-space of T-?I . We discuss the necessary and sufficient conditions for the map ?? to b e continuous on ?. A generalized Gram- Schmidt process is also given.

1. INTRODUCTION. Let T be a tile in the plane. By calling T a tile, we mean that T is a topological disk whose boundary is a simple closed curve. But also implicit in the word " tile " is our intent to use congruent or reflected copies of T to cover the plane without gaps or overlapping; that is, we want to tessellate the plane with copies of T. In a minor abuse of language, one often speaks of...

Introduction: Digital dental models provide a more accurate and comprehensive assessment of orthodontic cases. Although this technique is quite promising, there are few three-dimensional measurements methods described in the literature. Objective: The aim of this study was to propose a method for assessing the degree of mandibular anterior dental crowding in the three planes of space, using d...

OBJECTIVE The purpose of this study is to compare the accuracy of the treatment simulation module of Quick Ceph Studio (QCS) program to the actual treatment results in Class II Division 1 patients. DESIGN Retrospective study. MATERIALS AND METHODS Twenty-six skeletal Class II patients treated with functional appliances were included. T0 and T1 lateral cephalograms were digitized using QCS. ...

We consider a new plane problem of the potential theory outside symmetric T-shaped profile. In view symmetry profile, we reduce analyzed to mixed boundary-value in half with perpendicular cut whose solution is constructed by method partial domains use polar coordinates and Mellin integral transformation. The original reduced system two Wiener–Hopf equations completely regular infinite linear al...

Assume that an open or closed thin wire can be mathematically described by a vector-valued parametric curve r(t) = (x(t), y(t), z(t)) with t ∈ [a, b] and its density of mass is ρ(x, y, z). Then, • Length: L = ∫ b a √ x′(t)2 + y′(t)2 + z′(t)2dt. • Mass: M = ∫ b a ρ(x, y, z) √ x′(t)2 + y′(t)2 + z′(t)2dt. • Moment about the y-z plane: Myz = ∫ b a x(t)ρ(x, y, z) √ x′(t)2 + y′(t)2 + z′(t)2dt. • Mome...

background: excessive lumbar vertebrae translation and rotation in sagittal plane has been attributed as an associated factor of lumbar segmental instability (lsi) and low back pain (lbp). reduction of these abnormalities improves back pain. the aim of this study was to investigate the effect of core stability exercise on the translation and rotation of lumbar vertebrae in sagittal plane in pat...