[Diagnostic reliability in mental disorders of the International Classification of Diseases in primary care]. / Confiabilidade diagnóstica dos transtornos mentais da versão para cuidados primários da Classificação Internacional das Doenças.

INTRODUCTION: The objective is to evaluate the test version of Chapter V - "Mental and Behavioral Disorders reliability", of the 10th revision of the International Classification of Diseases, Version for Primary Care (ICD -10 PC), prepared by the Division of Mental Health of the World Health Organization (WHO). METHODS: During September and October of 1994, Community General Physicians (CGP) from the Health and Environment Department of the State of Rio Grande do Sul were trained in the use of this version, prepared for the field trial, according to the design proposed by WHO. RESULTS: The results refer to a study about reliability of diagnosis attributed by 9 pairs of CGP to 460 patients in their first appointments. Cohen's Kappa for Mental Health Disorder, present or absent, was 0,79 (CI 95%: 0,69 - 0,88). CONCLUSION: The use of ICD-10 CP will give more specificity to the information and will allow a better communication between health workers at the level of primary care

Dental composite resin porosity and effect on water absorption.

The aims of this study were: 1) to characterize the solubility and water absorption of different composite resins used as dental restorative materials; 2) to analyse their surface morphology using S.E.M. The resins tested were a mixture of glycidyl methacrylate (Bis-GMA) and TEGMA filled with silane-coated particles of inorganic fillers, and Bis-GMA and urethane resin. Cylindrical samples of composite resin were polymerized and stored in distilled water and weighed after different times. SEM analysis demonstrated voids and porous in several samples. The present study shows that dental restorative composite loose a small percentage of their components during storage time and that the type of resin, the nature of fillers and the methods of polymerization greatly influence water uptake and solubility of dental composite resin materials. These findings could explain the loss of anatomic form and the occlusal degradation of dental composites in "in vivo" conditions.