We propose a fast multi-orbital impurity solver for dynamical mean field theory (DMFT). Our DMFT solver is based on the equations of motion (EOMs) for local Green's functions and is constructed by generalizing from the single-orbital case to the multi-orbital case with the inclusion of the inter-orbital hybridizations and applying a mean field approximation to the inter-orbital Coulomb interact...

New insights into the microscopic origin of itinerant ferromagnetism were recently gained from investigations of electronic lattice models within dynamical meanfield theory (DMFT). In particular, it is now established that even in the one-band Hubbard model metallic ferromagnetism is stable at intermediate values of the interaction U and density n on regular, frustrated lattices. Furthermore, b...

We investigate the Mott transition using a cluster extension of dynamical mean field theory (DMFT). In the absence of frustration we find no evidence for a finite temperature Mott transition. Instead, in a frustrated model, we observe signatures of a finite temperature Mott critical point in agreement with experimental studies of kappa organics and with single-site DMFT. As the Mott transition ...

OBJECTIVES To determine trends in dental caries prevalence, severity and unmet treatment need levels amongst South African children. METHODOLOGY Data obtained from three National Oral Health surveys (1982, 1988/89, 1999/2002) was used. RESULTS Prevalence of caries amongst 12-year-old children decreased from 64.4% (1982) through 54.9% (1988/89) to 41.7% (1999/2002) and the DMFT decreased sig...

BACKGROUND In leprosy, oral health is often neglected and poorly understood. This study aimed to evaluate the prevalence and risk indicators of dental caries in patients with leprosy in China. METHODS This cross-sectional, multicentre study included 613 patients with leprosy and 602 control subjects. Based on the established standards of the World Health Organization, we investigated dental c...

AIM The purpose of this study was to analyse the serotype distribution of S. mutans and their association with caries activity in school children from Córdoba, Argentina. MATERIALS AND METHODS Clinical examination was performed in 133 children. The dmft+DMFT and Significant Caries (SiC) indices were calculated to identify individuals with high caries activity. After DNA extractions of S. muta...

INTRODUCTION Oral and dental health is one of the most important factors that affect the quality of life of preschool children. This study determined the effect of oral and dental health of preschoolers on their quality of life and that of their parents. METHODS This descriptive-cross sectional study asked 304 mothers of children aged 2-5 years from Babol, Iran, to complete an Early Childhood...

OBJECTIVE To assess the oral hygiene knowledge, attitude and practices among school children and evaluate their DMFT (Decayed/Missing/Filled Teeth) scores. STUDY DESIGN Cross-sectional study. PLACE AND DURATION OF STUDY A private school of Karachi from March to April 2008. METHODOLOGY Convenient sample comprising 300 students of grade 6 within the age group of 11-12 years was selected. A ...