Elderly people life expectancies

To make plastic teeth more comfortable and aesthetically pleasing, research and development has been promoted. The high quality of plastic teeth is expected to improve the quality of life for elderly people. Plastic teeth have biocompatible and biofunctional properties for natural chewing in terms of hardness, resilience, and impact absorption in comparison to ceramic teeth. 

A weakness of time-series studies is that those individuals who die as a result of pollution exposure cannot be identified. The associations of mortality with particle air pollution are stronger in the elderly (21,22,37,38), and deaths are associated with chronic respiratory or cardiovascular problems (43). But it is not clear who is dying. Are they people who would have died within the next couple of days anyway Is air pollution harvesting those who were on the verge of mortality If so, the few days loss of life expectancy may not have major pubhc health significance. 

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