In order to take account of the spatial fluctuation beyond the dynamical mean field theory (DMFT), the two-particle self-consistent theory is carefully reinvestigated and is proved to be unable to reproduce the correct low energy scale in the strong correlation limit. An improved theory is proposed which starts from DMFT and is combined with the spin-fluctuation theory (SFT) in a phenomenologic...

OBJECTIVE To evaluate the likelihood of caries increment in schoolchildren, based on their prior caries experience. MATERIAL AND METHODS We undertook a longitudinal study in 452 six-to-nine year olds between 1999 and 2001 in Mexico, with dental exams conducted by two standardized examiners (kappa>0.85). The dependent variable was the DMFT increment, dichotomized as without increment, and at l...

The aim of this study was to evaluate the prevalence of caries-free children using DMFT and significant caries (SiC) indexes in different caries prevalence groups in cities of the region of Campinas, São Paulo State, Brazil. The methodology proposed by the World Health Organization (1997) was used for caries diagnosis in 2,378 individuals. According to the DMFT index obtained in each evaluated ...

OBJECTIVES The objective of the present study was to investigate the caries experience and patterns in a sample of 6- and 13- year old school children and to estimate the contributing roles of the likely risk indicators. STUDY DESIGN Data were obtained from 400 (196, 6-year old and 204, 13-year old) school children. A questionnaire was sent to the children parents to measure socioeconomic, so...

OBJECTIVE Determining dental caries' experience, prevalence and severity in students applying for degree courses at San Luis Potosi University (UASLP). MATERIAL AND METHODS A cross-sectional study was carried out involving adolescents and young adults (16 to 25 years old) applying for undergraduate courses at UASLP (approximately 10 %, n=1 027). Two standardized examiners undertook dental exa...

The aim of this study was to assess the prevalence of dental caries and oral health practice of school children of 5-15 years of Bhaktapur, Nepal. Methods: Three hundred and forty school children were examined for decayed, missing and filled teeth. Decayed, Missing and Filled Teeth (DMFT) in permanent teeth and decayed and filled teeth (dft) in primary teeth were calculated. Then the DMFT index...

OBJECTIVE The aims of this study were to investigate the effectiveness of sealant placement under the guidelines of the Oral Health Promotion Program for Children and Adolescents (Portugal), and to test the influence of clinical and socioeconomic variables on the DMFT increment in 277 children, born in 1997. MATERIAL AND METHODS A dental hygienist performed the initial examinations and sealan...