[Quality assessment of amalgam restorations provided for primary school children].

This study was based on the examination of 726 amalgam restorations of the permanent molar teeth, 331 teeth from boys and 395 teeth from girls. The age distribution of amalgam restorations was 6-30 months, and the age of children was 6-12 years when teeth to be filled. The purpose of the study was to assess the prevalence of recurrent caries of teeth restored and quality of amalgam restorations rendered by dentists. The results showed that the age of majority of children whose teeth restored was 9 years old, 28.7 percent of all. 91.1 percent of the restorations were one surface fillings, 68.30 and 22.8 percent were occlusal and other single surface respectively. The recurrent caries found in both fracture and sound fillings were 19.42 percent. The rate of fracture was 48.10 percent and increased with the increasing age of restorations. At 19-24 months the fracture rate was highest, 54.1 percent. The defect of surface was 51.52 percent, that did not increase with the increase of restoration age. A statistically significant correlation was found between the defect of surface texture and fracture of restoration.