black/dental caries

The purpose of this review was to summarise the fundamentals about black stain, its diagnosis and possible differential diagnoses as well as its microbiology and therapy. In addition, various studies investigating the relationship between black stain and dental caries are examined. Many studies

Black stain is defined as dark pigmented exogenous substance in lines or dots parallel to the gingival margin and firmly adherent to the enamel at the cervical third of the tooth crowns in the primary and permanent dentition. OBJECTIVE This study was conducted to assess the prevalence of black stain

We discuss the late-time behavior of a dynamically perturbed Kerr black hole. We present analytic results for near-extreme Kerr black holes that show that the large number of virtually undamped quasinormal modes that exist for nonzero values of the azimuthal eigenvalue m combine in such a way that

The dentitions of 439 rural and 192 urban black children aged 1-5 years were examined with mirror and probe. Dental caries was common and the percentage prevalence and dmft values were similar in children of 1-3 years in both groups. At 4 years of age there was a twofold increase in dental caries in

Tooth decay is common in US children, especially for children in low-income families. More than half of second-grade children have cavities. Therefore, root canal procedures are becoming more common in children. We report a case of a 2-year-old boy with a rare complication of a root canal procedure

Five healthy children under 6 years of age, five healthy adults, and 10 adult periodontitis patients were examined for the prevalence and distribution of black-pigmented Bacteroides in the oral cavity. A total of 13 samples was obtained from each individual, including four supragingival and four

DMFT scores were determined in series of 1) urban Black adolescents (132 boys, 143 girls) aged 16-18 yr, and 2) rural Black mothers (480) aged 20-35 yr. Each series was divided into upper and lower thirds, with respect to DMFT. No relationship was apparent between segments with good versus inferior

Several studies have suggested that green tea and Oolong tea extracts have antibacterial and anticariogenic properties in vitro and in vivo. The aim of the present study was to determine the effect of a standardized black tea extract (BTE) on caries formation in inbred hamsters on a regular and a

A Japanese Black calf, manifested by clinical signs of inability to stand and extending hind limbs after birth, was investigated clinically and pathologically. In the neurological inspection, gastrocnemius reflex and patellar tendon reflex of the right hind limb were hyperactive, and gastrocnemius

This study examined the correlation between dark pigmented dental plaque (black stain) and caries. Black stain was observed in 67 of 1086 schoolchildren (from 6-12 years old). The mean DMF-T was 0.49 = 1.05 for children with black stain and 0.97 = 1.40 for children with black without black stain

Black stain is characterized as a dark line or an incomplete coalescence of dark dots localized on the cervical third of the tooth. Over the last century, the etiology of black stain has been the subject of much debate. Most of the studies concerning this issue were conducted in pediatric