he problem and treatment of the ectopically erupting permanent first molar have been addressed by many authors1'9 since they were first men­ tioned in the literature by Chapman10 in 1923. This paper presents a simple and effective technique for the treat­ ment of ectopically erupting perma­ nent first molars. A modification of this technique is also presented that uses instruments and materials...

OBJECTIVES The purpose of this study was to evaluate the proximity of the mandibular molar apex to the buccal bone surface in order to provide anatomic information for apical surgery. MATERIALS AND METHODS Cone-beam computed tomography (CBCT) images of 127 mandibular first molars and 153 mandibular second molars were analyzed from 160 patients' records. The distance was measured from the bucc...

The method of constant stimuli was used to examine the accuracy with which two-dimensional spatial information can be represented in mental images. In experiment 1, subjects had to decide which of two successively presented two-dot separations was wider. Over the range of interstimulus intervals employed (0 to 30s), there was a linear relationship between interstimulus interval and spatial inte...

By Xenia Field. (Max Parrish, 30s.) Mrs. Field has set herself a difficult task in attempting to describe, in a comparative. short book, the various penal institutions for women in England, their administr tion, staffing, and, hardest of all, their inmates, whose personalities and offences ^ also discussed. Her object in writing it is to plead that women, or all but a stfj minority, should be k...

The aim of this study was to assess the relationship between power variables in the vertical jump and full squat with the sprint performance in soccer players. Fourteen under-21 soccer players were evaluated in two testing sessions separated by 7 days. In the first testing session, vertical jump height in countermovement was assessed, and power output for both loaded countermovement jump (CMJL)...

BACKGROUND Marriage is a significant event in life-course of individuals, and creates a system that characterizes societal and economic structures. Marital patterns and dynamics over the years have changed a lot, with decreasing proportions of marriage, increased levels of divorce and co-habitation in developing countries. Although, such changes have been reported in African societies including...

0

BACKGROUND The high rate of incarceration in the USA warrants continued exploration into understanding and ameliorating criminal behaviour. The growing use of cooperative games to measure developing prosocial behaviours has never been explored in a US criminal justice population. AIMS The aim of this study is to examine cooperative game play among offenders under supervision in the community....

Based on astrochemical theory, the complex molecular composition around high-mass YSOs should evolve from the outer envelope in toward the central hot region as a sequence of temperature dependent chemical pathways are activated in ices and in the gas-phase. The resulting complex molecules have been broadly classified into three generations dependent on the temperature (<25, >25, and >100 K) re...

Flash-cooling and annealing of macromolecular crystals have been investigated using in situ X-ray imaging, diffraction-peak lineshape measurements and conventional crystallographic diffraction. The dominant mechanisms by which flash-cooling creates disorder are suggested and a fixed-temperature annealing protocol for reducing this disorder is demonstrated that should be more reliable and flexib...