The Risk Line: a special telephone line to provide means of reporting potential dangers and to increase public participation.

Injuries constitute a significant public health problem. There is a risk of injury in any environment in which persons are present. The purpose of this paper is to describe the development and experiences from the Risk Line. The Risk Line is a special telephone number to provide means of reporting potential risks for injuries and dangerous products and to increase public participation in injury reporting. Various strategies have been used to make the Risk Line well known in the population. Weekly reports on the risk of playground, traffic, recreational, and residential injuries and dangerous products have been distributed to those who are responsible for eliminating these hazards. The major risk environments reported were traffic, recreational, residential environments, and playgrounds. Seventy-seven percent of the reported hazards had been eliminated. A majority of the public (72%) who had phoned the Risk Line stated that they had become more observant and aware of risks for injuries. In conjunction with injury statistics and safety inspections, information from the Risk Line can contribute to give an improved overall picture of where priorities are needed in safety promotion and injury prevention work.

Alginate impressions for fixed prosthodontics. A 20 year follow up study.

The aim of this study was to estimate whether the survival ratios after 20 years of fixed prosthodontics made of alginate impressions was higher, equivalent or lower, compared to the survival ratios, shown in studies, where different impression materials were used. 151 females and 104 males were screened regarding the condition and age of the restorations at the annual check-up in one of the author's surgeries. Average ages were 55 and 54 years respectively, when the fixed prosthodontics were seated. A total of 1.271 units were produced during the twenty years, 911 abutment teeth and 360 pontics. The type of prosthetic work was divided into three groups: 1) larger fixed prosthodontics 6-14 units (469), 2) smaller fixed prosthodontics 2-5 units (541) and 3) single crowns (261). The results show that alginate impressions can produce fixed prosthodontics with survival ratios similar to those presented in other studies, after 5 years (99%), 1o years (93-96%) and 15 years (74-96%). After 20 years the survival ratio was 61-63%. In conclusion, fixed prosthodontics made according to the syringe-tray alginate impression method may have the same success rates after 20 years compared to that of fixed prosthodontics presented in previous longitudinal clinical studies where other impression materials had been used. In this study, caries and root fractures were the main reasons for removing abutment teeth and pontics.