Mineral density of hypomineralised and sound enamel

Molar Incisor Hypomineralisation (MIH) is a structural anomaly that affects the quality of tooth enamel and has important consequences for oral health. The developmentally hypomineralised enamel has normal thickness and can range in colour from white to yellow or brown. The purpose of the present study is to compare the mineral density of hypomineralised and normal enamel. The sample included eight MIH teeth from seven patients. MIH teeth were scanned using high resolution microtomography. Non-parametric statistical tests (Wilcoxon test for paired samples) were carried out. Hypomineralised enamel has decreased mineral density (mean 19%; p < 0.0001) compared to normal enamel. This weak enamel has implications in clinical management of MIH lesions

J Clin Med

The Barcelona Sleepiness Index (BSI) is an ultra-short instrument with several advantages for assessing excessive daytime sleepiness (EDS). The present study was performed to analyze the validity of the French version of the BSI in screening for EDS. We conducted a cross-sectional study on a population of students using an online questionnaire. The French version of the BSI was developed by a rigorous forward-backward translation process. We computed the discrimination properties of the BSI to predict EDS assessed by the Epworth Sleepiness Scale (ESS), as well as correlations with other sleep measures. In total, 662 students were enrolled in the study (mean age: 20.9 years, 76.0% women). The BSI score (mean = 1.5 ± 1.0) showed a strong correlation with the ESS score (r = 0.47, p < 10−4) and acceptable discrimination of EDS assessed by ESS score ≥ 11 (AUC = 0.742) with an optimal cutoff point of 2, as in the original study. The BSI score was significantly associated with sleep deprivation and social jetlag. Therefore, the French version of the BSI is a valid ultra-short instrument for EDS screening in individuals. In addition, the BSI score may be associated with both homeostatic and circadian processes. Further studies are needed to confirm these findings in general populations and in patients with sleep disorders

Understanding dental wear

International audienc

Understanding dental wear

International audienc

Human tooth wear in the past and the present : tribological mechanisms, scoring systems, dental and skeletal compensations

International audienc

Usures, fissures, fractures et vieillissement : comment remodeler et rajeunir un sourire ?

Les dents sont soumises à différentes contraintes au cours du vieillissement. Certaines d'entre elles entraînent une usure pathologique, des fissures et/ou des fractures susceptibles de détériorer significativement la fonction et l'esthétique. Les objectifs de cet article sont d'abord de revenir sur les étiologies et le diagnostic de ces lésions puis de développer à l'aide d'un cas clinique une technique minimalement invasive permettant de remodeler et rajeunir le sourire

Tooth wear and compensatory modification of the dento-alveolar complex in a Nubian sample

International audienc

La photographie numérique dentaire. 2ème partie, le post-traitement informatique

National audienc

Human tooth wear in the past and the present : tribological mechanisms, scoring systems, dental and skeletal compensations

International audienc

Lésions d'usure et bruxismes chez l'adulte. 1ère partie

National audienc