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Kinds of Schoolchildren Selected AbstractsThe Prevalence of Headache and Its Association With Socioeconomic Status Among Schoolchildren in Istanbul, TurkeyHEADACHE, Issue 5 2009Objective., The etiology and pathogenesis of migraine and other types of headache are still under discussion. An interaction of organic, psychological, and psychosocial factors is operative. In this study, we aimed to determine the prevalence of headache and its association with socioeconomic status among schoolchildren. Study Design., A cross-sectional study was performed on 2669 schoolchildren via a parental questionnaire. Socioeconomic status was determined according to the Turkish socioeconomic status scale. Results., The mean age of the students was 8.2 ± 2.4 years. The headache prevalence was 46.2% (95% CI: 44.3-48.1). The prevalence of migraine was 3.4% (95% CI: 2.8-4.1), the prevalence of probable migraine was 8.7% (95% CI: 7.6-9.8), and that of non-migraine headache was 34.1% (95% CI: 32.3-35.9). Multivariate analysis revealed that older age, being a girl, having a family history of headache, and exposure to passive smoking at home were independently associated with headache. There was an inverse association between socioeconomic status and all 3 types of headaches after adjusting for age, sex, family history of headache, and presence of passive smoking. When the group with the lowest socioeconomic status was taken as the reference category, the odds ratios for the highest socioeconomic group were 0.33 (95% CI: 0.16-0.69, P = .003) for the migraine, 0.30 (95% CI: 0.11-0.89, P = .029) for the probable migraine, and 0.34 (95% CI: 0.16-0.72, P = 0.005) for the non-migraine headache. Conclusion., Headache is more common among children with lower socioeconomic groups. Social causation can play a role in the pathogenesis of headache. [source] Seroprevalence of Helicobacter pylori Infection Among Schoolchildren and Teachers in TaiwanHELICOBACTER, Issue 3 2007Ding-Bang Lin Abstract Background:,Helicobacter pylori are associated with chronic antral gastritis that is related to duodenal ulcer, gastric ulcer, and probably gastric adenocarcinoma. Infection of H. pylori during childhood is considered an important risk factor for gastric carcinoma in adult life. Materials and Methods:, To examine the epidemiologic characteristics of H. pylori infection among schoolchildren in central Taiwan, a community-based survey was carried out using stratified sampling in 10 elementary schools and three junior high schools including students and theirs teachers. Serum specimens of 1950 healthy schoolchildren (aged 9,15 years old) and 253 teachers who were randomly sampled were screened for the H. pylori antibodies by enzyme-linked immunosorbent assay. Statistical analysis was performed by using the spss for Windows statistical software system. Results:, A total of 332 subjects were H. pylori antibodies positive, giving an overall prevalence of 15.1%. The age-specific seropositive rates were 11.0% in 9,12 years age group, 12.3% in 13,15 years age group, and 45.1% in the teacher group. The older the age, the higher the seroprevalence (OR = 11.53; 95% CI = 6.73,19.74; p < .001 for children vs. teachers). There was no difference in the seroprevalence of H. pylori infection by gender, ethnicity, geographical area, socioeconomic level, parental education, sibship size, family members, and source of drinking water. Conclusion:, The teachers had a much higher prevalence of H. pylori antibodies. The finding suggests that these teachers (adults) might be infected in their early childhood and implies that the poor environmental and hygienic conditions might be responsible for it. It seemed that poor water supply system, sewage disposal, and other environmental hygiene in adult might play some roles in H. pylori infection in Taiwan (before early 1980s). [source] Pediculosis capitis in northern JordanINTERNATIONAL JOURNAL OF DERMATOLOGY, Issue 12 2000Zuhair S. Amr BSc Background Little is known about the prevalence of pediculosis among school students in northern Jordan. Objective To study the incidence of pediculosis among school students of different socio-economic levels in northern Jordan. Method A total of 2519 school students of both sexes enrolled in eight elementary governmental schools were examined for the presence of Pediculus capitis. Schools were grouped into four socio-economic classes: very low (VL), low (L), medium (M), and high (H). The chi-squared test was performed to analyze the results. Results Overall, 338 students (13.4%) were infested with nits, immature or adult P. capitis. Girls showed a higher prevalence (14.5%) than boys (11.1%). Statistical analysis for socio-economic classes and infestation rates yielded a significant effect of the four classes on infestation. This conclusion was evident among schoolgirls, where infestation rates were 28.8%, 18.9%, 6.1%, and 0.2% in VL, L, M, and H socio-economic classes, respectively. Schoolchildren in the age group 8,9 years exhibited higher prevalence rates (16% in boys and 22.1% in girls), while prevalences declined to 10.2% and 6.6% among boys and girls aged 10,12 years, respectively. Conclusions This study reveals that socio-economic status is a major factor influencing the occurrence of pediculosis among school students of both sexes in Jordan. A national campaign should be implemented to enhance public awareness. [source] The Prevalence, Characteristics of and Risk Factors for Eczema in Belgian SchoolchildrenPEDIATRIC DERMATOLOGY, Issue 2 2009Elke Govaere M.D. In this cross-sectional study we examined the prevalence and characteristics of eczema in an unbiased community population of 2,021 Belgian schoolchildren, aged 3.4 to 14.8 years with skin prick testing and parental questionnaires. Our study identified an eczema prevalence of 23.3% and a considerable allergic co-morbidity, mainly in sensitized children. The reported prevalence of eczema in infancy was 18.5% and for current eczema 11.6%. The overall sensitization rate (33.2%) as well as sensitization rates for the individual allergens were significantly higher in children with "eczema ever." Sensitization to Dermatophagoides pteronyssinus (19.6%), mixed grass pollen (15.1%), and cat (9.1%) were most common. Until the age of 6 years, boys with eczema were significantly more sensitized than girls (p = 0.007). Children with both eczema in infancy and current eczema show a tendency to be more sensitized than children with eczema in infancy only or current eczema only, but significance was only noted for a few individual allergens. Analysis of factors associated with eczema revealed a predominantly atopic profile characterized by family or personal history of allergy. Breastfeeding and environmental factors seemed to assume little relevance except for a protective effect of prematurity and having a dog at birth. [source] Tsunami, War, and Cumulative Risk in the Lives of Sri Lankan SchoolchildrenCHILD DEVELOPMENT, Issue 4 2010Claudia Catani This study examines the impact of children's exposure to natural disaster against the backdrop of exposure to other traumatic events and psychosocial risks. One thousand three hundred ninety-eight Sri Lankan children aged 9,15 years were interviewed in 4 cross-sectional studies about exposure to traumatic life events related to the war, the tsunami experience, and family violence. Symptoms of posttraumatic stress disorder, somatic complaints, psychosocial functioning, and teacher reports of school grades served as outcome measures. A global outcome variable of "positive adaptation" was created from a combination of these measures. Data showed extensive exposure to adversity and traumatic events among children in Sri Lanka. Findings of regression analyses indicated that all 3 event types,tsunami and disaster, war, and family violence,significantly contributed to poorer child adaptation. [source] Effects of back care education in elementary schoolchildrenACTA PAEDIATRICA, Issue 8 2000G Cardon The purpose of this study was to investigate the effects of a back care education programme, consisting of six sessions of 1 h each, in fourth- and fifth-grade elementary schoolchildren. Testing consisted of a practical performance and a back care knowledge test. Forty-two subjects and 36 controls performed a pre-test and were tested within 1 wk after the programme. To monitor effects and follow-up effects on a larger sample, 82 different pupils were tested within 1 wk after the programme and 116 other children 3 mo after. Both larger samples were compared with one group of 129 controls. Interrater reliability for the test items of the practical assessment was high; intraclass correlation coefficients varied from 0.785 to 0.980. In the pre/post design study, interaction between time and condition was significant for the sum score of the practical assessment and for the knowledge test (p < 0.001), with higher scores for the intervention group (15% improvement for the knowledge test score, 31.6% for the practical sum score). Significantly higher sum scores for the knowledge test and for all practical assessment items were found in the intervention groups, tested within 1 wk and 3 mo after the programme, in comparison with the control group (p <0.001). Conclusion: The effectiveness of a primary educational prevention programme on back care principles was demonstrated in this study. Effectiveness, long-term outcomes and behavioural changes need further evaluation to optimize back care prevention programmes for elementary schoolchildren. [source] Prevalence and causes of fractured permanent incisors in 12-year-old suburban Nigerian schoolchildrenDENTAL TRAUMATOLOGY, Issue 3 2009Comfort A. Adekoya-Sofowora A dental trauma cross-sectional survey was carried out through clinical examination of upper and lower permanent incisors and interviews with 415 (212 boys, 203 girls) 12-year-old children attending private and public secondary schools in lle-Ife, in 2004/2005 by one calibrated examiner. Garcia-Godoy's classification was used. The prevalence of traumatic dental injuries was 12.8%. There was no statistical difference in the prevalence between boys and girls P > 0.05. The most common cause of injuries was falls (49.1%), followed by traffic accidents (13.2%), collision against objects or people (11.3%) and misuse of teeth 9.4%. The commonest type of injury was enamel fracture alone (9.9%), followed by enamel-dentine fracture (4.8%). Majority of the accidents occurred at home (60.4%), followed by school (26.4%). The prevalence of traumatic dental injuries was on the increase among suburban Nigerian children in Ile-Ife and it has a potential to be considered an emerging public health problem. [source] Spatial analysis of dental trauma in 12-year-old schoolchildren in Curitiba, BrazilDENTAL TRAUMATOLOGY, Issue 4 2008Simone Tetu Moysés A geographic information system (GIS) was used, built by means of ArcView GIS 3.2 software and geographical databases of streets and districts defined within the boundaries of the city of Curitiba, provided by Curitiba's Institute of Research and Public Planning (IPPUC). The database used in the study was compiled based on an epidemiological survey undertaken in 1998 on a sample of 2126 schoolchildren 12 years old, residing in outlying urban suburbs distributed over 29 micro-areas in the city of Curitiba. The cases selected for this study were those with a history of dental trauma, thereby comprising a subsample of 327 schoolchildren. The spatial location of the schoolchildren's homes enabled the events to be visualized on a cartographic basis. The variables of gender, aetiology of the trauma and areas of substandard living conditions were included in the analysis and construction of thematic maps, thus making possible a descriptive analysis of the spatial distribution of dental trauma in the city. Intra-urban differentials were identified in the prevalence of dental trauma in 12-year-old schoolchildren in Curitiba. A greater concentration of occurrences was observed in the eastern region of the city, especially in areas of substandard living conditions. It was possible to conclude that socio-environmental and geophysical factors are associated with the determination of dental trauma in the city of Curitiba, pointing to the need for the development of public policies especially aimed at areas and populations at greater risk. [source] Risk factors related to traumatic dental injuries in Brazilian schoolchildrenDENTAL TRAUMATOLOGY, Issue 5 2004Evelyne Pessoa Soriano Abstract,,, The aim of this pilot study was to analyse whether overjet, lip coverage and obesity represented risk factors associated with the occurrence of dental trauma in the permanent anterior teeth of schoolchildren in Recife, Brazil. It included a random sample of 116 boys and girls aged 12 years, attending both public and private schools. Data was collected through clinical examinations and interviews. Dental trauma was classified according to Andreasen's criteria (1994). Overjet was considered as risk factor when it presented values higher than 5 mm. Lip coverage was classified as adequate or inadequate, while obesity was considered according to National Center for Health Statistics (NCHS) procedures for the assessment of nutritional status. The prevalence of dental injuries was 23.3%. Boys experienced more injuries than girls, 30 and 16.1%, respectively (P > 0.05). There was a statistically significant difference between traumatic dental injuries and overjet (P < 0.05) and between traumatic dental injuries and lip coverage (P = 0.000). No statistical significant differences were found when obesity and dental trauma were analysed (P < 0.05). It was concluded that boys from lower social strata attending public schools, presenting an overjet size greater than 5 mm and an inadequate lip coverage, were more likely to have traumatic dental injuries in Recife, Brazil. Obesity was not a risk factor for dental trauma in this sample. [source] Prevalence of crown fractures in 8,10 years old schoolchildren in Canoas, BrazilDENTAL TRAUMATOLOGY, Issue 5 2004Maximiano Ferreira Tovo Abstract,,, The objective of this work was to evaluate the prevalence of children with crown fractures in permanent anterior teeth in 206 schoolchildren (104 girls and 102 boys) between the ages of 8 and 10 years, enrolled in three public schools in the city of Canoas, Brazil. The prevalence found was 17% with no significant difference between boys and girls, as well as between the ages. The most affected tooth was the maxillary central incisor, and a majority of the children showed only one affected tooth (88.6%). The types of fracture most commonly found were oblique and horizontal, and the portions of dental structures most affected were ,enamel only' and ,enamel and dentin'. Only seven children (20%) sought out dental treatment. [source] Dental injury among Brazilian schoolchildren in the state of São PauloDENTAL TRAUMATOLOGY, Issue 3 2004Sylvia Grimm Abstract ,,,To describe the distribution of dental trauma in Brazilian schoolchildren and its association with demographic, environmental and clinical factors. A random sample of 73 243 schoolchildren's oral examination records from private and public units, selected from 131 cities within the state of São Paulo, Brazil, was analysed. Trauma was assessed based on international methodological standards prescribed by the World Health Organization for Oral Health Surveys (1997). Proportions obtained were compared between urban and rural schools, as well as between private and public units. Oral health status indices were estimated based on the decayed, missing and filled teeth (DMFT) index , the average number of decayed, missing and filled teeth; the proportion of caries-free 5-year-old schoolchildren and anterior maxillary overjet among 12-year-old schoolchildren. The prevalence of dental trauma in anterior dentition was of 2.4, enrolling average 1.2 teeth per child. A rate of 2.4 impaired anterior teeth per thousand was obtained, upper central incisors being those that were most affected , 7.7 in every 10. Among 8- to 11-year-old children, the rates grew regularly. The proportion of dental trauma was significantly higher in boys than in girls (P < 0.01), and gender prevalence ratio was of 1.58 for boys. The results showed positive associations between dental trauma and caries-free 5-year-old schoolchildren (P = 0.003), anterior maxillary overjet,3 mm (P < 0.001), and private school as a socio-economic proxy indicator (P = 0.048). [source] Traumatic injuries to anterior teeth among schoolchildren in MalaysiaDENTAL TRAUMATOLOGY, Issue 4 2001Nik Noriah Nik-Hussein Abstract , Evidence of traumatized permanent incisors was recorded as part of a national oral health survey of schoolchildren in Malaysia. A total of 4085 schoolchildren aged 16 years were examined. The prevalence of injury was 4.1% and it was significantly higher in males than females, with a ratio of 2:1. Almost 75% of the subjects had one tooth affected. Out of a total of 200 fractured teeth, 78.0% involved the maxillary central incisors. A high level of untreated traumatized teeth (89%) was noted. However, of the untreated traumatized teeth, only 9% presented with problems such as discoloration of tooth, sinus or abscess formation. [source] Examination stress in Singapore primary schoolchildren: how compliance by subjects can impact on study resultsACTA PSYCHIATRICA SCANDINAVICA, Issue 3 2003G. Parker Objective: Examinations are anecdotally viewed as extremely stressful to Singapore schoolchildren. We test this postulate by obtaining parental ratings of children's emotional stress levels longitudinally in a large representative sample of sixth (P6) and fifth (P5) class primary schoolchildren, respectively, exposed and unexposed to a streaming examination. Method: Children's stress levels were rated monthly by a parent for 10 months. Results: Analyses failed to find evidence of any differential stress impact across P6 and P5 comparison groups, apart from a subset of P6 children whose parents complied with every monthly survey. Conclusion: The streaming examination in the final year of primary school did not emerge as a general stressor to children, but achieved salience within a defined subset of children whose parents were highly study compliant. Study compliance may be a proxy variable of some import, and have wider relevance to other cohort studies and to intervention trials. [source] Just when you thought it was safe: synthetic phonics and syncretic literacy practicesENGLISH IN EDUCATION, Issue 3 2005Andrey Rosowsky Abstract Until just recently one might have been forgiven for considering the ,Reading' debate to have been amicably resolved, with, at the end of the twentieth century, a negotiated consensus reached comprised of all sides in the debate agreeing on a balanced approach to the teaching of initial reading. However, the recent intervention of the House of Commons Education and Skills Committee with its report, Teaching Children to Read, and its advocacy of synthetic phonics, has once again brought the teaching of reading in UK schools to public attention. This paper seeks to provide an interesting comparative example of a UK literacy context where synthetic phonics is employed regularly and systematically. Thousands of British schoolchildren attend mosque schools on a daily basis where they learn how to read the Classical Arabic of the Qur'an. They are taught how to decode the text accurately and fluently using synthetic phonics methods. This literacy practice is described and suggestions are made about what it might have to contribute to the discussion around the adoption of synthetic phonics in mainstream schools [source] Assessment of short-term association between health outcomes and ozone concentrations using a Markov regression modelENVIRONMETRICS, Issue 3 2003Abdelkrim Zeghnoun Abstract Longitudinal binary data are often used in panel studies where short-term associations between air pollutants and respiratory health outcomes are investigated. A Markov regression model in which the transition probabilities depend on the covariates, as well as the past responses, was used to study the short-term association between daily ozone (O3) concentrations and respiratory health outcomes in a panel of schoolchildren in Armentières, Northern France. The results suggest that there was a small but statistically significant association between O3 and children's cough episodes. A 10,,g/m3 increase in O3 concentrations was associated with a 13.9,% increase in cough symptoms (CI,95%,=,1.2,28.1%). The use of a Markov regression model can be useful as it permits one to address easily both the regression objective and the stochastic dependence between successive observations. However, it is important to verify the sensitivity of the Markov regression parameters to the time-dependence structure. In this study, it was found that, although what happened on the previous day was a strong predictor of what happened on the current day, this did not contradict the O3 -respiratory symptom associations. Compared to the Markov regression model, the signs of the parameter estimates of marginal and random-intercept models remain the same. The magnitudes of the O3 effects were also essentially the same in the three models, whose confidence intervals overlapped. Copyright © 2003 John Wiley & Sons, Ltd. [source] Dealing with the offer of drugs: the experiences of a sample of pre-teenage schoolchildrenADDICTION, Issue 7 2003James McIntosh ABSTRACT Aims To investigate the ways in which pre-teenage children anticipate and deal with the offer of drugs. Design A qualitative study based on semi-structured interviews with 10,12-year-old schoolchildren. Setting The cities of Glasgow (Scotland) and Newcastle (England), UK. Participants A sample of 216 pre-teenage children. Forty-three had used drugs on at least one occasion, 42 had been offered but had not used drugs and 131 had neither used drugs nor been offered them. Most of the results reported in the paper relate to the experiences of the 42 children who had declined the offer of drugs. Findings While children who had not been exposed to drug offers expressed a high degree of confidence in their ability to deal with them, those who had actually had to cope with such offers experienced a variety of difficulties. The ease with which an offer could be declined appeared to depend upon two main factors: who was making the offer and the context in which it was being made. According to the children, offers from people with whom they had a close relationship and those in which pressure or encouragement were involved were particularly difficult to deal with. Conclusions The paper concludes that there is a need to equip young people better with the interpersonal tools they require to deal with the various situations they are likely to encounter in which drugs may be offered. It is suggested that a broadly based life skills approach to drug education may provide the best way of helping young people to deal with these situations. [source] Regulatory T cells in human geohelminth infection suppress immune responses to BCG and Plasmodium falciparumEUROPEAN JOURNAL OF IMMUNOLOGY, Issue 2 2010Linda J. Wammes Abstract Chronic helminth infections induce T-cell hyporesponsiveness, which may affect immune responses to other pathogens or to vaccines. This study investigates the influence of Treg activity on proliferation and cytokine responses to BCG and Plasmodium falciparum -parasitized RBC in Indonesian schoolchildren. Geohelminth-infected children's in vitro T-cell proliferation to either BCG or pRBC was reduced compared to that of uninfected children. Although the frequency of CD4+CD25hiFOXP3+ T cells was similar regardless of infection status, the suppressive activity differed between geohelminth-infected and geohelminth-uninfected groups: Ag-specific proliferative responses increased upon CD4+CD25hi T-cell depletion in geohelminth-infected subjects only. In addition, IFN-, production in response to both BCG and parasitized RBC was increased after removal of CD4+CD25hi T cells. These data demonstrate that geohelminth-associated Treg influence immune responses to bystander Ag of mycobacteria and plasmodia. Geohelminth-induced immune modulation may have important consequences for co-endemic infections and vaccine trials. [source] The Prevalence of Headache and Its Association With Socioeconomic Status Among Schoolchildren in Istanbul, TurkeyHEADACHE, Issue 5 2009Objective., The etiology and pathogenesis of migraine and other types of headache are still under discussion. An interaction of organic, psychological, and psychosocial factors is operative. In this study, we aimed to determine the prevalence of headache and its association with socioeconomic status among schoolchildren. Study Design., A cross-sectional study was performed on 2669 schoolchildren via a parental questionnaire. Socioeconomic status was determined according to the Turkish socioeconomic status scale. Results., The mean age of the students was 8.2 ± 2.4 years. The headache prevalence was 46.2% (95% CI: 44.3-48.1). The prevalence of migraine was 3.4% (95% CI: 2.8-4.1), the prevalence of probable migraine was 8.7% (95% CI: 7.6-9.8), and that of non-migraine headache was 34.1% (95% CI: 32.3-35.9). Multivariate analysis revealed that older age, being a girl, having a family history of headache, and exposure to passive smoking at home were independently associated with headache. There was an inverse association between socioeconomic status and all 3 types of headaches after adjusting for age, sex, family history of headache, and presence of passive smoking. When the group with the lowest socioeconomic status was taken as the reference category, the odds ratios for the highest socioeconomic group were 0.33 (95% CI: 0.16-0.69, P = .003) for the migraine, 0.30 (95% CI: 0.11-0.89, P = .029) for the probable migraine, and 0.34 (95% CI: 0.16-0.72, P = 0.005) for the non-migraine headache. Conclusion., Headache is more common among children with lower socioeconomic groups. Social causation can play a role in the pathogenesis of headache. [source] Characteristic and Overlapping Features of Migraine and Tension-Type HeadacheHEADACHE, Issue 3 2006Dilsad Turkdogan MD Objective.,This epidemiological survey was conducted to investigate comprehensive characteristic and overlapping features of migraine and tension-type headache (TTH) disorders classified based on International Classification of Headache Disorders-II. Methods.,The stratified cohort of this study was composed of 2504 schoolchildren aged 10 to 17 years. A 38-item questionnaire inquiring all characteristic features of primary headache syndromes mandatory for classification was applied to selected 483 children with recurrent headache in the last 6 months. Results.,Migraine was diagnosed in 227 (47.0%) of 483 children and TTH in 154 (31.9%). Out of 125 children with definite migraine, 73 (58.4%) reported tension-type symptoms and 94 (68.1%) of 138 children with definite TTH reported migraine-type symptoms. Pressing pain (21%) and lack of aggravation of pain by physical activity (34%) were the major tension-type features in patients with migraine. Throbbing quality (43%) and aggravation by physical activity (30%) determined the main migraine-type features in patients with TTH. Conclusion.,The frequent co-occurrence of migraine and TTH symptoms suggests the presence of a common pathogenesis. [source] Seroprevalence of Helicobacter pylori Infection Among Schoolchildren and Teachers in TaiwanHELICOBACTER, Issue 3 2007Ding-Bang Lin Abstract Background:,Helicobacter pylori are associated with chronic antral gastritis that is related to duodenal ulcer, gastric ulcer, and probably gastric adenocarcinoma. Infection of H. pylori during childhood is considered an important risk factor for gastric carcinoma in adult life. Materials and Methods:, To examine the epidemiologic characteristics of H. pylori infection among schoolchildren in central Taiwan, a community-based survey was carried out using stratified sampling in 10 elementary schools and three junior high schools including students and theirs teachers. Serum specimens of 1950 healthy schoolchildren (aged 9,15 years old) and 253 teachers who were randomly sampled were screened for the H. pylori antibodies by enzyme-linked immunosorbent assay. Statistical analysis was performed by using the spss for Windows statistical software system. Results:, A total of 332 subjects were H. pylori antibodies positive, giving an overall prevalence of 15.1%. The age-specific seropositive rates were 11.0% in 9,12 years age group, 12.3% in 13,15 years age group, and 45.1% in the teacher group. The older the age, the higher the seroprevalence (OR = 11.53; 95% CI = 6.73,19.74; p < .001 for children vs. teachers). There was no difference in the seroprevalence of H. pylori infection by gender, ethnicity, geographical area, socioeconomic level, parental education, sibship size, family members, and source of drinking water. Conclusion:, The teachers had a much higher prevalence of H. pylori antibodies. The finding suggests that these teachers (adults) might be infected in their early childhood and implies that the poor environmental and hygienic conditions might be responsible for it. It seemed that poor water supply system, sewage disposal, and other environmental hygiene in adult might play some roles in H. pylori infection in Taiwan (before early 1980s). [source] ,I Saw a Nightmare . . .': Violence and the Construction of Memory (Soweto, June 16, 1976)HISTORY AND THEORY, Issue 4 2000Helena Pohlandt-McCormick The protests on June 16, 1976 of black schoolchildren in Soweto against the imposition of Afrikaans as a medium of instruction in their schools precipitated one of the most pro-found challenges to the South African apartheid state. These events were experienced in a context of violent social and political conflict. They were almost immediately drawn into a discourse that discredited and silenced them, manipulating meaning for ideological and political reasons with little regard for how language and its absence,silences,further violated those who had experienced the events. Violence, in its physical and discursive shape, forged individual memories that remain torn with pain, anger, distrust, and open questions; collective memories that left few spaces for ambiguity; and official or public histories tarnished by their political agendas or the very structures,and sources,that produced them. Based on oral histories and historical documents, this article discusses the collusion of violence and silence and its consequences. It argues that,while the collusion between violence and silence might appear to disrupt or, worse, destroy the ability of individuals to think historically,the individual historical actor can and does have the will to contest and engage with collective memory and official history. [source] A vicious cycle in the oral health status of schoolchildren in a primary school in rural CambodiaINTERNATIONAL JOURNAL OF DENTAL HYGIENE, Issue 3 2007Emiko Koito Shidara Abstract, Objective:, To investigate the oral health status and the risk factors contributing to dental caries and gum disease of schoolchildren in Cambodia. Methods:, A cross-sectional survey was conducted in a primary school in the Puok District, Siem Reap Province of Cambodia. An oral examination and self-reported questionnaire were used to evaluate oral health status of schoolchildren, ranging in age from 6,16. Of the 512 children that were enrolled in first through sixth grade at the primary school, 332 children (62.8%) participated. Results:, Of the schoolchildren that were involved in this study, the prevalence of dental caries in permanent dentition was 53.5% and gum disease was present in 46.2%. Among the participants 80% had plaque, 68.6% suffered from tooth pain and only 44.2% of the schoolchildren owned their own toothbrush. There was an association between the schoolchildren that suffered from tooth pain and those that had dental caries (P < 0.03). Plaque was related to dental caries in permanent dentition (P < 0.003), calculus (P < 0.0001) and gum disease (P < 0.0001) and was linked to the schoolchildren who did not own a toothbrush (P < 0.03) and who suffered from tooth pain (P < 0.03). Conclusion:, The following sequence of events may result in a vicious cycle in the oral healthcare of schoolchildren in rural Cambodia: the lack of a personal toothbrush leads to plaque buildup, which may increase the incidence of dental caries, which has been linked to tooth pain and gum disease. Ultimately, this poor oral healthcare impacts an individual's quality of life and can lead to more serious health issues later in life. [source] Agenesis of permanent teeth in 8138 Danish schoolchildren: prevalence and intra-oral distribution according to genderINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 3 2009STEEN RØLLING Objective., The purpose of this study was to describe agenesis of permanent teeth in children with respect to prevalence and intra-oral distribution according to gender. Methods and subjects., The study was population based and included all children in one district of the municipality of Aarhus, Denmark, in 1974,1979 (1657 girls and 1668 boys) and 1992,2002 (2409 girls and 2404 boys). The children underwent systematical clinical and radiographic examination. Results., The period prevalence rates were almost identical for the two time periods (1972,1979: 7.8%; 1992,2002: 7.1%). Girls were affected more frequently than boys, and affected girls had more congenitally missing teeth than affected boys. Unilateral agenesis of the second premolars was more frequent than bilateral agenesis. In children with only one congenitally missing tooth, agenesis of the upper lateral incisors was asymmetrical in girls, but not in boys, whereas the opposite was true for the lower second premolars in boys. Conclusion., The prevalence of agenesis of permanent teeth in Danish schoolchildren seems to be constant over time, and similar to that found in other large, population-based studies. Intra-oral distributions of congenitally missing teeth indicate gender-specific patterns. [source] Risk factors for injuries to maxillary permanent incisors and upper lip among schoolchildren in Dar es Salaam, TanzaniaINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 2 2009FEBRONIA KOKULENGYA KAHABUKA Background.,, Dental trauma is common among children, and the maxillary permanent central incisors are the most often affected teeth. Aim.,, This study aimed to investigate the risk factors for injury to maxillary permanent incisors and the upper lip among Tanzanian schoolchildren aged 8,14 years. Design.,, A cross-sectional study involving 1119 children. The risk variables investigated included age, gender, lip competence, and overjet. The corresponding proportions of injuries and the relative risk (with 95% confidence interval) were calculated and tested by Fisher's exact test. Logistic regression was applied to ascertain the strength and direction of the association of the risk variables to injuries, and backward selection was used to test significant risk factors. Results.,, About 24% of the children had trauma to maxillary incisors, 45% had incompetent lip whereas 31% had increased overjet. Age, gender, overjet, and lip competence showed significant association with injuries to upper lip and maxillary incisors. Boys had sustained more injuries than girls, with a higher relative risk for luxation injuries. Enamel fracture was associated with overjet combined with lip competence, whereas enamel dentine fracture without pulp involvement was related to gender. Luxation injuries were associated with gender, tooth avulsion with overjet, and lip competence. Injury to the upper lip was associated with age. Conclusion.,, Male gender, increased overjet, and lip incompetence were the main risk factors of getting trauma to maxillary incisors, whereas age was the risk factor for injury to the upper lip. [source] Influence of local anaesthesia on the quality of class II glass ionomer restorationsINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 4 2007NANDA VAN DE HOEF Objective., To investigate the influence of local anaesthesia on the quality of class II glass ionomer restorations with discomfort as cofactor. Material and methods., The study population consisted of 6- to 7-year-old schoolchildren in Paramaribo and its environs. To be included, each child needed to have a proximally situated cavity in a primary molar that was accessible to hand instruments and where no pulp exposure was expected. They were randomly divided into four treatment groups: conventional method with and without local anaesthesia and atraumatic restorative treatment method (ART) with and without local anaesthesia. The restoration quality was scored using the evaluation criteria for ART restorations (successful if restoration is correct or has a minor defect and fails if defects are larger than 0.5 mm, if secondary caries is observed, if the restoration is fractured, partly or totally lost or if the pulp is involved) at 6 and 30 months after treatment. The extent of discomfort was registered by assessing the behaviour (modified Venham score) and observing the heart rate during treatment. Results., For this study 153 children were treated with hand instruments (ART) and 146 children with rotary instruments (conventional method). A total of 198 restorations were evaluated during follow-up periods. There were no significant differences in patient discomfort between the ART and the conventional group and between the anaesthesia and the non-anaesthesia group. The conventional restorations demonstrated significantly higher success rates than ART restorations after 6 (P = 0.001) and 30 months (P = 0.032). There were no significant differences in success rate between the anaesthesia and the non-anaesthesia group. Conclusion., Local anaesthesia has no influence on discomfort during treatment. Furthermore, discomfort during treatment does not affect the success rate of restorations. [source] A sociodental approach to assessing dental needs of children: concept and modelsINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 2 2006S. GHERUNPONG Summary. Objectives., Traditional normative methods of assessing dental needs do not correspond to current concepts of ,health' and ,need'. Although there is dental research on quality of life, evidence-based practice, and oral behaviours, those concepts are rarely applied to dental needs estimation. Dental needs are usually calculated mainly from clinical data and are likely to be inaccurate. A structured comprehensive method for assessing dental needs is required. The objectives of this study are to develop and test a new sociodental system of needs assessment for overall dental needs of primary schoolchildren. Furthermore, normative and sociodental estimates of need are compared. Design., The study developed a theoretical framework and pathway algorithms of sociodental needs assessment and applied them to assessing overall dental needs. Normative dental needs were assessed using standard normative criteria. The child oral impacts on daily performances (Child-OIDP) was used to assess oral impacts, and a self-administered questionnaire was used to obtain information on demographic variables and oral behaviours. Data were analysed according to the developed algorithms. Setting., A cross-sectional survey in Suphanburi Province, Thailand. Participants., All 1126 children aged 11,12 years in a town. Main results., The sociodental approach was acceptable and not costly. In all, 54·4% had normative need under the dental needs model for life-threatening and progressive conditions, but only 16·6% had high propensity-related need; the remaining 37·8% would require dental health education or oral health promotion (DHE/OHP) or both and appropriately adjusted clinical interventions. Under the basic model of dental needs, 45·1% had normative need. Two-thirds of them (30·9%) had impact-related need and the remaining 14·2% did not have oral impacts and therefore should only receive dental health education. Only one-third of those with impact-related need had high propensity and were suitable for evidence-based conventional treatments; the remaining two-thirds should receive DHE/OHP and alternative clinical interventions. Conclusions., A sociodental system of dental needs assessment was developed and tested on school children. It decreased the estimates of conventionally assessed dental treatment needs and introduced a broader approach to care. [source] Dental fluorosis in primary teeth: a study in rural schoolchildren in Shaanxi Province, ChinaINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 6 2005J. P. RUAN Summary. Objective. The aim of this study was to assess the prevalence and severity of fluorosis in the primary dentition of 7,8-year-old Chinese schoolchildren in areas with fluoride concentrations in the drinking water ranging from 0·35 to 7·6 mg L,1. Subjects and methods. Four hundred and seventy-two children from 13 different schools were divided into four groups according to the fluoride concentration of the drinking water: (A) , 1·0 mg L,1; (B) 1·1,2·0 mg L,1; (C) 2·1,3·8 mg L,1; and (D) 7·6 mg L,1. Clinical examinations were made under field conditions, and dental fluorosis on the buccal surfaces of all teeth was recorded using the Thylstrup,Fejerskov Index (TFI). Results. The prevalence of dental fluorosis in primary teeth varied from 6·2% to 96·6% according to the fluoride concentration of the drinking water. The differences of median of TFI scores between all groups were statistically significant (P < 0·001) except for groups B and C. No statistically significant difference in the severity of dental fluorosis was observed between genders. The second primary molars were most severely affected by dental fluorosis. Disregarding group A, TFI scores between 3 and 4 were most frequently recorded. Dental fluorosis was symmetrically distributed in both jaws. Conclusion. Dental fluorosis is prevalent in the primary teeth of children living in areas supplied with drinking water with fluoride concentrations higher than 1·0 mg L,1. The primary teeth may act as biomarkers of fluoride exposure. The examination of primary teeth may give an early warning of this condition, and thus, provide a basis for intervention to prevent dental fluorosis in the permanent teeth. [source] Dental caries and associated factors in 12-year-old schoolchildren in Thiruvananthapuram, Kerala, IndiaINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 6 2005J. DAVID Summary Objectives. The aims of the present study were to describe the dental health status of 12-year-old schoolchildren in Thiruvananthapuram, Kerala, India, and to identify sociodemographic factors, oral health behaviours, attitudes and knowledge related to dental caries experience. Methods. The study took the form of a cross-sectional survey of 838 children in upper primary schools. A two-stage cluster sampling technique was used. Dental caries was measured using World Health Organization criteria. Sociodemographic factors, oral health behaviours, attitudes and knowledge were assessed by a self-administered questionnaire. Results. The prevalence of dental caries in the permanent dentition was 27%. The mean number of decayed, missing and filled teeth was 0·5 (SD = 0·9). The decayed component (D) constituted 91% of the total number of decayed, missing and filled teeth (DMFT). Multiple logistic regression analysis showed that children had a higher risk of having dental caries if they lived in urban area [OR = 1·5, 95% confidence interval (CI) = 1·1,2·1], had visited a dentist (OR = 1·6, 95% CI = 1·2,2·2), did not use a toothbrush (OR = 1·9, 95% CI = 1·2,2·9), consumed sweets (OR = 1·4, 95% CI = 1·0,1·9) or performed poorly in school (OR = 1·7, 95% CI = 1·0,2·3). Conclusions. The prevalence of caries in this sample of 12-year-old schoolchildren was low compared to that in other developing countries. The present study indicated that urban living conditions were associated with more dental caries. Since urbanization is rapid in India, oral health promotion at the present time would be valuable to prevent increased caries prevalence. [source] Caries prevalence in Belgian children: a reviewINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 3 2001J. Vanobbergen A review of epidemiological surveys on dental caries prevalence, published between 1980 and 1999 in Belgian children, was compiled through a literature search. The number of studies performed in Belgium to date is limited. Methodological differences and confounding factors, especially socio-demographic influences, limit national comparisons of caries prevalence data. Although exact comparisons are difficult, data suggests a decline in caries prevalence in 5, 7 and 12 year-old Belgian schoolchildren in the last 20 years. In the primary dentition dmft values have decreased from 2·66 (1981) to 1·38 (1994) in 5-year-olds and from 4·1 (1983) to 2·24 (1996) in 7-year-olds. In 12-year-olds DMFT values in the permanent dentition have decreased from 3·9 (1983) to 1·93 (1994). WHO goals for the year 2000 appear to have been already reached in Flanders, with a recent estimate of 1·93 for DMFT in 12-year-olds and 56% of children being recorded as caries free at the age of 5. Continuing efforts are needed to screen the oral health of different age groups but standardised criteria and sampling procedures should be used if benefits are to be gained from national and international comparison. Data has often been limited to small selected areas and information representing the entire community of Flanders or Wallonia would be of particular value. [source] Teeth and blood lead levels in egyptian schoolchildren: relationship to health effectsJOURNAL OF APPLIED TOXICOLOGY, Issue 4 2001Magdy Omar Abstract The objective of this work was to study teeth and blood lead levels in Egyptian schoolchildren and to relate lead levels to sociodemographic and environmental factors, the degree of urbanization and suspected manifestations of possible lead exposure. The study was conducted on 60 children aged 6,12 years: 30 children living in an urban area at Alexandria City and 30 children living in a rural area at Kafr El-Sheikh Province. Both groups are matched for age and gender. Every child was subjected to history taking, clinical examination and IQ measurements. Laboratory investigations included measuring teeth and blood lead levels, haemoglobin, serum iron and total iron binding capacity. The results showed that the mean blood lead level of children in Alexandria was significantly higher than that of the children in Kafr El-Sheikh; also 56.7% and 6.7% of children from Alexandria and Kafr El-Sheikh had a blood lead level of >20 µg dl,1, with the most frequent symptoms of headache, arthralgia and lack of school interest. The children in Alexandria had significantly lower mean teeth lead and haemoglobin levels than those of the Kafr El-Sheikh group. A history of wrapping sandwiches in newspapers, age and distance between the home and school were significant predictors of lead exposure. These findings support the concept that teeth lead concentration may be a valid addition to the indicators used for assessment of the body burden of environmental lead. In addition, children living in urban areas such as Alexandria need special consideration regarding protection from lead exposure, as well as teeth and blood lead evaluation. Copyright © 2001 John Wiley & Sons, Ltd. 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