Children (n = 11, 8–10 years old) brushed with placebo (fluoride-free), low-fluoride (513 mgF/kg), and conventional (1072 mgF/kg) dentifrices twice daily for 1 week, following a double-blind, cross-over protocol. Biofilms were generated using Leeds in situ devices, which were collected 1 and 12 h after brushing, and sectioned through their depth. Sections were grouped (10 × 5 μm) for fluoride and calcium analysis. Sections 4 μm thick were used for image analysis and determination of biomass fraction. Results were analysed by anova, Tukey’s test,

and linear regression analysis (P < 0.05). Fluoride and calcium were mostly located at the outer sections of biofilms for all dentifrices tested, and these ions were directly correlated throughout most of biofilm's sections. Results for conventional LY2835219 dentifrice were significantly higher than for the placebo, but did not differ from those for the low-fluoride dentifrice. The use of a low-fluoride dentifrice did not promote a higher fluoride uptake in inner biofilms’ sections, as hypothesized. As plaque fluoride was significantly elevated only after the use of the conventional dentifrice, the recommendation of low-fluoride formulations should be done with

caution, considering both risks and benefits. “
“International Journal of Paediatric Dentistry 2010; 20: 119–124 Background.  The association between coeliac Pifithrin �� disease (CD) and dental enamel defects Urease (DED) is well known. Aim.  The aim of this study was to investigate the prevalence of DED in children with CD and to specifically find the association of DED and gluten exposure period,

CD clinical forms, HLA class II haplotype. Design.  This study was designed as a matched case–control study: 250 children were enrolled (125 coeliac children – 79 female and 46 male, 7.2 ± 2.8 years and 125 healthy children). Data about age at CD diagnosis, CD clinical form, and HLA haplotype were recorded. Results.  Dental enamel defects were detected in 58 coeliac subjects (46.4%) against seven (5.6%) controls (P < 0.005). We found an association between DED and gluten exposure period, as among CD subjects the mean age at CD diagnosis was significantly (P = 0.0004) higher in the group with DED (3.41 ± 1.27) than without DED (1.26 ± 0.7). DED resulted more frequent (100%) in atypical and silent CD forms than in the typical one (30.93%). The presence of HLA DR 52-53 and DQ7antigens significantly increased the risk of DED (P = 0.0017) in coeliac children. Conclusions.  Our results confirmed a possible correlation between HLA antigens and DED. "
“International Journal of Paediatric Dentistry 2011; 21: 271–277 Aim.