Humans beings generally have two sets of teeth in their whole life span. Primary teeth which erupts at the age of 6-7 months till 6 years and the the permanent teeth comes out generally till 18 years and sometimes till 25 years.
It is scientifically impossible to have any new set of teeth except them. But sometimes it's documented to have a tooth eruption after placing a complete denture,which is normally because of having an erupted tooth in that region which comes out in later or older stage of life and had not been diagnosed before because of no radio graphic examination.This may give an impression of a new teeth in old age normally more or nearer to 100 year.
An old patient of 104 years of Drozhonosk District Hospital, the republic of Tatarstan, Russia, surprised doctors by showing that she has a new tooth began to grow in her month. It is a unique case, Tatarstan Health Ministry reported. A few cases of adults’ tooth renewal were mentioned in the Guinness Book. But it has never happened to a person, who is more than 100 years old. Three tooth are simultaneously growing in the month of Maria Vasilieva. She is glad about it. “Now I’ll be able to eat spice-cakes”, the long-liver says.
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