Impact of pH-adjusted fluoride and stannous solutions on the protective properties on the pellicle layer in vitro and in situ.

This study evaluates the ideal pH for anti-erosion and anti-adherent efficacy of fluoride and stannous solutions (sodium fluoride (SF), amine fluoride (AF), sodium monofluorophosphate (SMFP), stannous fluoride (SnF2) with 500 ppm fluoride concentration each and stannous chloride (SnCl2, 1563 ppm stannous)). In vitro, solutions were tested at pH 4.5 and 5.5. The main in situ experiments were carried out at the pH of 4.5: For pellicle formation 6 volunteers wore bovine enamel slabs intraorally for 1 min, rinsed with 8 ml solution for 1 min and continued for up to 30 min/8 h. Physiological pellicle samples served as controls. After incubation in HCl (2.0, 2.3) for 2 min mineral release was determined photometrically. Bacterial counts on 8 h biofilms were determined by fluorescence microscopy (BacLight™ and DAPI with Concanavalin A). Modification of the pellicle ultrastructure was examined by TEM. Statistical analysis was performed using Kruskal-Wallis and Mann-Whitney-U tests with Bonferroni-correction (p < 0.05). SnF2 showed a significant erosion protection. AF, SnF2, and SnCl2 were most anti-adherent. SnF2 and SnCl2 caused a pronounced basal pellicle with stannous precipitates. Compared to other fluoride monosubstances, stannous ions offer greater protection against erosive acidic attacks. Stannous ions act as crucial co-factor in this process.

[Relations between ethnicity and child malnutrition in rural Benin]. / Liens entre appartenance ethnique et malnutrition infantojuvénile en milieu rural béninois.

UNLABELLED: Relations between ethnicity and child malnutrition in rural Benin. RATIONALE: In a therapeutic feeding center in northern Benin, we found disparities between the three main ethnic groups in the proportions of children hospitalized; undernutrition seemed more frequent and severe in the Gando than in the Bariba and the Fulani groups. This survey sought to identify risk factors for malnutrition. METHODS: We used a standardized questionnaire to interview women from these three groups, all with a child aged 5 years or younger. RESULTS: The study included 165 mothers from the three main ethnic groups, 62 of whom had weaned a child. Children from the Bariba group seemed to have access to better sanitary and nutritional conditions than those from the Gando and Fulani groups: higher quality water (from boreholes), more frequent access to latrines, higher usage of bed nets, higher likelihood of birth in a medicalized environment, early breastfeeding, and progressive and voluntary weaning. During and after weaning, children from the Fulani group received more milk-based food than the other groups. In the Fulani group, therefore, the supply of milk of animal origin may compensate for some less favorable practices related to childbirth and breastfeeding. CONCLUSION: We identified several factors, probably influenced by socioeconomic and cultural conditions, that probably affect child undernutrition. Sanitary and nutritional education programs should be conducted to target specific ethnic groups of this region.

[Infant-juvenile malnutrition in Fo-Boure (Benin): Anthropometric data and management of malnourished children]. / Malnutrition infantojuvénile à Fo-Bouré (Bénin): données anthropométriques et prise en charge des enfants malnutris.

UNLABELLED: Acute malnutrition or emaciation in childhood is defined by a low ratio weight/height. In Benin, 8% of the children are concerned. In the north of Benin, the situation is alarming. The aim of this survey is to specify: (1) the characteristics of infantile malnutrition in rural area in the north of Benin and (2) the management of the malnourished children. SUBJECTS AND METHODS: A descriptive survey was conducted in a paediatric dispensary. Anthropometric data of children from 0 to 60 months were collected. The children with severe malnutrition were admitted to a nutritional rehabilitation centre. The methods were those recommended by the World Health Organization and were adapted to the local resources. RESULTS: The anthropometric data of 239 children were analyzed. The prevalence of emaciation was 33%. Thirty-eight children were admitted to the centre. Twenty-nine of the children recovered. DISCUSSION: This survey confirms the precarious situation in the north of Benin, which may be explained by socio-economic and climatic factors. It can be prevented partly by better food availability, but also by an education on mothers. The strategies must be updated according to their effectiveness in terms of public health and their local acceptability. CONCLUSION: The prevalence of malnutrition in Fo-Bouré is beyond the value used by WHO to define the zones where the nutritional situation requires nutritional rehabilitation centres.

[Tropical ecopathology: up hill and down dale Buruli ulcer]. / Ecopathologie tropicale: ulcère de Buruli par monts et par vaux.

Buruli ulcer (Mycobacterium ulcerans) sees its incidence increase particularly in West Africa. Our Non Governmental Organization (Projet Humanitaire Afrique Nord Sud) studied the distribution of cutaneous ulcer (of which Buruli ulcer) between a flooded site (Bonou) and a dry site (Ketou) in Benin. The ratio "prevalence of Buruli ulcer in our patients of Bonou on prevalence of Buruli ulcer in our patients of Ketou" was 7.5 with a confidence interval at 95% at [1.4 - 41.4]. There is a link between a watery ecosystem and the emergence of Buruli ulcer. Buruli ulcer is overrepresented in the under 15 age group. It can interest all the zones of the tegument whereas the other ulcers concern especially the lower limbs. Thus doctors could not be unaware of the importance of ecological factors ... in precarious medium where diagnosis is based on interrogation, clinical examination and field experience.

[Declared diseases, observed diseases and health priorities in a Benin rural district]. / Pathologies déclarées, pathologies observées et priorités de santé dans un district rural au Bénin.

A project of a humanitarian action was preceded by a health diagnosis of a population in the rural district Bonou in Bénin. A diagnosis of perception was set up by the interviews among the population and the local health professionals. That diagnosis was completed by an objectified diagnosis originating from the analysis of 460 consultations performed in Bénin end 1998- beginning 1999. The cross-sorting between the diagnosis of perception and the objectified diagnosis pointed out four public health problems: malaria, bronchial asthma, infectious diarrhoeas and Buruli ulcer with respective prevalences of 9%, 6%, 3% and 0.9%. The prevalence of bronchial asthma fluctuates from 4% in dry areas to 8% in wet areas (Chi 2 = 3.50; p = 0.06). The role of house dust mites is suspected because of those ecological arguments to which is added clinical reasoning. Bronchial asthma was chosen as a priority health problem because of the feasibility and acceptance of a survey which aims at pointing out the allergic etiology. The confirmation of that etiology will enable in that case the decrease of the allergenic pressure, particularly well adapted solution in the Southern countries. Therefore a humanitarian action is foreseen to apprehend the etiologies of bronchial asthma in the rural district Bonou in Bénin in 2000.

Assessment of codependency behavior in two health student groups.

The present study examines the relationship between codependency and caregiving to determine whether codependent persons tend to be attracted to caregiving professions. The study also examined the relationship between codependency, self-esteem, and locus of control, as measured by the Friel Co-Dependency Assessment Inventory (Friel, 1985; Friel & Friel, 1987), the Tennessee Self-Concept Scale (Fitts, 1965), and the Internal-External Locus of Control Scale (Rotter, 1966), respectively. Voluntary participants consisted of 15 occupational therapy students and 15 health information administration (HIA) students believed to be different from one another with respect to the caregiving aspects of their respective professions. The occupational therapy group scored significantly lower than the HIA group on the measure of codependency (m = 21.2 vs. m = 28.8, respectively) [t(28) = 2.258, p = 05]. No other significant differences were noted between groups for the other test scores. Only codependency scores between 31 and 60, that is, moderate-to-severe and severe concerns (n = 6), had a strong correlation with self-esteem scores (r = -.974) and a moderate correlation with locus of control scores (r = .683). No student in the occupational therapy group scored within the moderate-to-severe or severe range. The results did not support a relationship between codependency and choice of a caregiving-oriented profession. Further, only moderate-to-severe and severe codependency scores were indicative of low self-esteem and high external locus of control. Implications of this study suggest incorporation into the academic preparation of occupational therapy students information regarding codependency and self-assessment of codependency to facilitate awareness of the student's need to nurture others.(ABSTRACT TRUNCATED AT 250 WORDS)

The Americans With Disabilities Act of 1990 and employees with mental impairments: personal efficacy and the environment.

The Americans With Disabilities Act of 1990 (ADA) (Public Law 101-336) provides persons with mental health problems basic rights resulting in full access to community resources, especially the rights and privileges associated with the work role. This paper discusses the law, personal self-efficacy, and four environmental aspects as they relate to the employment of persons with mental impairments: (a) employer and co-worker attitudes, (b) essential job functions, (c) reasonable accommodations, and (d) community access. Areas of intervention for occupational therapists in mental health include attitude and advocacy training, assisting employers in providing reasonable accommodations, and preparing persons with mental impairments to be successful employees. Examples in occupational therapy are reviewed to illustrate the implementation of the ADA with persons with mental health problems.

Self-esteem and leisure patterns of persons in a residential chemical dependency treatment program.

Occupational therapists who work with persons who are alcohol and drug dependent often provide services to enhance self-esteem and to promote healthy leisure activities. This article describes a study conducted in a residential chemical dependency program with 101 subjects. Each subject was assessed for selfesteem and leisure interest patterns. Although for the entire group self-esteem was not found to be strongly correlated with a variety of and involvement in leisure activities, decreased past involvement in activities was found to be prevalent in those subjects with a low self-esteem. Treatment and evaluation implications for the occupational therapist in a chemical dependency setting are discussed.

Development of a level I fieldwork evaluation.

The Wisconsin Council on Education (Wiscouncil) developed and pilot tested an evaluation of student performance for Level I fieldwork to be use for both occupational therapy and occupational therapy assistant students. Data were gathered from 259 students, fieldwork supervisors, and faculty who rated the form on a number of variables. The majority of students and clinical faculty believed the form was good to excellent in meeting their needs, in being useful in a variety of settings, in being applicable for both occupational therapy and occupational therapy assistant students, and in overall efficiency. On the basis of the results of the 1-year pilot study, short (23-item) and long (38-item) versions of the form were developed. Implications for use and the importance of future research to determine reliability and validity are discussed.