one of the main problems of the drug abusers is drug related attention bias, which causes craving, and as a result drive the drug abusers to take narcotics. methadone is used as a maintenance treatment for drug abusers. the purpose of this study is evaluation of the effect of methadone maintenance therapy (mmt) on selective attention and drug related attention bias. this study investigated drug...

The purpose of this study was to evaluate the color of primary teeth, and study how to develop a model shade guide for primary teeth. A concise synopsis on color and the esthetics of primary teeth has been obtainable. Young children and their parents' craving for an esthetically amusing smile were pointed out. Fundamental information on mechanisms of tooth color perception, color notation syste...

Two new methods are proposed for linear regression analysis for data with measurement errors. Both methods are designed to accommodate intrinsic scatter in addition to measurement errors. The first method is a direct extension of the ordinary least squares (OLS) estimator to allow for measurement errors. It is quite general in that a) it allows for measurement errors on both variables, b) it al...

objectives: the aim of this study was to evaluate the effect of four commercially available mouthrinses on the color stability of one type of glass ionomer, giomer and compomer. method: 60 disc-shaped specimens, 180 in total (7*2mm), fabricated from each of the following materials: a resin modified glass ionomer fuji ii lc (gc international corp), a giomer beautifil ii (shofu inc) and a compome...