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Scientists found that in all cases similar to other factors such as education, age, disease history and other factors, the memory of the healthy teeth was significantly better than that of the teeth removed.
Jan Berry Dahl, an associate professor of psychology at the University of Yu Mo, said: "we ourselves are surprised at the result. This may be a breakthrough in the study of tooth condition and amnesia in the elderly. Berry Dahl is a dentist and one of the authors of this report.
He also pointed out that their research is the first large-scale research on human beings, and experiments were carried out on animals before. The results show that tooth extraction can cut off the nerve to the brain and affect memory.
This result is in good agreement with the results of recent studies on the relationship between tooth and memory in Japanese scientists. Japanese scientists found that rats whose teeth were extracted did not have significantly better memory than those with healthy teeth.
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