Dental injuries among schoolchildren aged from 6 to 15, in Rennes (France).

A representative sample of 2020 schoolchildren, aged 6 to 15 years, was randomly selected from 85 state and private schools in Rennes and distributed in 10 groups, according to their age. Type and prevalence of dental injuries were determined in each group, using Ellis & Davey's classification, giving rise to a subset of 345 subjects. Simple enamel fracture was the predominant injury (59.4%), occurring most often on maxillary central incisors. Most time (77.1%), the trauma affected only one tooth. Mean prevalence of dental injuries was 13.6% from 2020 subjects. Boys showed a higher prevalence than girls (respectively 17% and 10.2%), but this difference was only significant for age-groups 12 and 13 (p < 0.001) and for the whole group of 6-15 (p < 0.001).

[Oral and dental health status in a population of schoolchildren aged 5 to 15 years in Wallis]. / Etat bucco-dentaire de la population scolarisée de Wallis âgée de 5 à 15 ans.

This study was performed in 1992 with three aims: to assess precisely the prevalence of dental carries in the child population of Wallis Island; to evaluate the need for dental care; and create a database allowing the oro-dental status to be followed and the effectiveness of preventive programmes to be assessed. The total population of the Wallis Islands according to the 1990 (the most recent) census was 8,973 living in twenty villages. The population was classified into four ethnic groups: Wallisian (94.4%), Futunian (1.2%), European (3.9%) and miscellaneous (0.5%). The lifestyle of the population is traditional and there is virtually no manufacturing, overseas trade or tourism. The population of Wallis Island is young, with 56.6% of the population under 20 years old. Almost all the children attended school from the age of 6 to the age of 19 [3]. Half the Island's children (n = 1407) between the ages of 5 and 15 years old were classified into 11 age groups and were examined. Children from all schools were included in the study group which was representative of the child population of Wallis Island (94.4% were Wallisian) (table 1). The study was performed according to the 1988 WHO guidelines [4] and Cahen [5]. At age 5, a mean of 3.26 teeth had erupted. The permanent dental set (other than the 3rd molars) were present by age 12 years in virtually all cases. The percentage that had carrie-free permanent teeth were 89.9% at age 5, 59.9% at age 6, 22% at age 12 and only 13.4% at age 15.(ABSTRACT TRUNCATED AT 250 WORDS)

[Epidemiological survey of oral status of 7, 12 and 15-year old Cape Verde school children]. / Enquete epidemiologique sur l'etat bucco-dentaire des enfants scolarises ages de 7, 12 et 15 ans au Cap-Vert.

A representative sample of 614 schoolchildren of Cape Verde Islands, 7, 12 and 15 years old, was randomly selected. The dental caries prevalence was determined in each age group using the dmft and DMFT indices. The mean DMFT index increased from 2.38 at age 7 to 4.5 at age 15 years. The percentage of children with caries free permanent teeth decreased from 74.5% to 10.4% between 7 and 15 years of age.

[Epidemiologic investigations on caries prevalence among schoolchildren in Brittany (France)]. / Epidemiologische Erhebungen zur Kariesprävalenz schulpflichtiger Kinder in der Bretagne (Frankreich).

1421 randomly selected 6- to 15-year-old Breton children were examined in 1987 in order to assess the prevalence of caries in permanent teeth. Methods proposed by Turlot & Cahen (1989) were used. At 6, 85.9% of all children were caries-free and at 15, only 5.3%. At 14, DMFT and DMFS rates reached 6.46 and 12.36, respectively. The differences of scores stated between boys and girls and between children from urban and rural regions were not statistically significant. Pits and fissures were more frequently affected than approximal and smooth surfaces. Since 1986, fluoridated domestic salt is available in France. Thus, the present investigation will serve to study the effects of this recently adopted preventive measure.

[Epidemiologic study of dental caries in the school population of the provinces of Ille-et-Vilaine, Eure, Orne, Calvados and Manche]. / Etude épidémiologique de la carie dentaire dans la population scolaire des départements d'Ille et Vilaine, de l'Eure, de l'Orne, du Calvados et de la Manche.

An epidemiological study of 1,063 schoolchildren aged 6 to 15 years, from the Departments of Ille et Vilaine, Eure, Orne, Calvados and Manche was conducted of dental caries prevalence and incidence according to sex and urban or rural origin of the children. The DMFT index was respectively 0.34, 2.02, 3.85 and 6.51 at the age of 6, 9, 12 and 15 years. The DMFS index was 0.52 at 6 years and 11.32 at 15 years. At the age of 6, 84.5% of the children were free of caries whereas this percentage was only of 5.1% at the age of 15.