Stéphanie Léger

Changes in Occlusal Caries Lesion Management in France from 2002 to 2012: A Persistent Gap between Evidence and Clinical Practice

A survey conducted in 2002 among French general dental practitioners (GPs) showed variations between treatment decisions and a tendency towards early restorative intervention for caries. The aims of the present questionnaire survey were to investigate, among a random sample of 2,000 French GPs, the management decisions for occlusal lesions in 2012 and to compare the results to those obtained in 2002. The response rate was 41.9%. The majority of the respondents (60.7%) would postpone their restorative decisions until the lesion was in the dentin, based on clinical and radiographic examinations. Almost 68% of the respondents suggested that the cavity preparation should be limited to the lesion (vs. a preparation extending to the occlusal fissure), and 81.6% chose composite as restorative material for the earliest lesion requiring restoration in a 20-year-old patient with his/her caries risk factors under control. Statistical analysis (χ2 and logistic regression) showed that the management decisions were influenced by certain demographic characteristics (gender, clinical experience and participation in cariology courses). When comparing the 2002 and 2012 responses, it appears that even if French GPs still tend to intervene surgically for occlusal lesions, which could benefit from noninvasive care such as therapeutic sealants, the restorative threshold has been delayed to later stages of carious progression (p < 0.0001). Moreover, the 2012 respondents were less likely to open the fissure system than the 2002 respondents (p = 0.032), and less amalgam restorations would have been placed in 2012 (p < 0.0001). Furthermore, the results showed that the variability observed in 2002 toward caries management decisions was persisting in 2012.

Addressing children's oral health inequalities: caries experience before and after the implementation of an oral health promotion program

Abstract Objective. (1) To evaluate the dental status of 5-year-old children in Clermont-Ferrand (France) in 2009; (2) To measure changes in childrens dental status between 2003 and 2009; and (3) To estimate the impact of an Oral Health Promotion (OHP) program implemented in nine schools since 2005. Materials and methods. All 5-year-olds attending public schools in deprived areas (n = 15) and six randomly selected other schools in Clermont-Ferrand were invited to participate. Dental status was recorded using d3mft, as in 2003. Parents responded to questions about their childs oral hygiene and provided socio-demographic information. Results. Of children invited, 478 (77%) were examined. Mean dmft was 1.18 (SD 2.61); 27.6% had at least one tooth affected. Caries experience varied significantly with deprivation status, oral hygiene and household SES indicators. The only difference observed between 2003 and 2009 was an increase in the ‘f’ component (p < 0.001). Dental status had slightly deteriorated in areas characterized in 2003 by low caries levels (p=0.07). In deprived areas, mean dmft increased in schools without the OHP program (p = 0.04). Changes between 2003 and 2009 were studied at school level using Multiple Factorial Analysis; it tended to improve in four schools, which had the OHP program. Household indicators of SES changed little. Oral hygiene levels varied differently from one school to another. Conclusions. Caries experience was high, with large inequalities between children. No major differences were observed between 2003 and 2009. The OHP program has done little to reduce disparities in oral health, even if dental status improved in four schools.

Les ondelettes à la conquête du drap brownien fractionnaire

A random field depending on two parameters α and β is defined by a fractional integration with respect to the white noise field. A wavelet basis is used to produce a decomposition of it in the space L2(R2). The aim of this paper is to produce a simulation algorithm of the fractional Brownian field: the almost convergence, uniform on any compact set, of this decomposition is proved. Finally, the rate of this convergence is determined. To cite this article: A. Ayache et al., C. R. Acad. Sci. Paris, Ser. I 335 (2002) 1063–1068.

The Yngve Ericsson Prize in Preventive Odontology

Patent Revenue Fund and ORCA herby solicit nominations for the 2016 Yngve Ericsson Prize. The award will be SEK 300,000 (approx. EUR 32,000) for one person and SEK 200,000 per person if shared by two recipients. The Prize winner(s) will be selected by a Prize Committee of distinguished scientists, three members of which are appointed by the Patent Revenue Fund for Preventive Odontology and two members appointed by ORCA. The Prize is awarded to persons who have performed outstanding laboratory or clinical research that has contributed specifically to the prevention of dental and oral disease. Candidates are judged on the originality, quality and range of their scientific contributions as well as the range and clinical importance of the results. Individuals who are still active in research are preferred candidates. No preference will be given to candidates from any country. A nomination should contain the name of the candidate and must be accompanied by a statement giving reasons why the candidate would be a worthy awardee, including a list of the candidate’s relevant scientific publications and, if possible, a short CV. Nominations of candidates must be received by the Secretary of the Patent Revenue Fund, Prof. Peter Lingström (Institute of Odontology, Box 450, SE–405 30 Göteborg, Sweden; E-Mail peter.lingström @ odontologi. gu.se), no later than February 15, 2016. Call for Nominations