According tomedia New Atlas, sediment layers on rock or tree wheels can provide clues about the environment of different times in the past – the same idea may even apply to your own teeth. Scientists at New York University have found that the materialthat that makes up the roots retains a lifetime of stress records, such as childbirth, illness, and even imprisonment.
Most of the teeth don’t grow once they’re broken, but the tissue around the roots grows. This thing is called dental bone and usually adds new layers behind the surface of the tooth. In the study, the researchers investigated the hypothesis that major physiological events would leave their mark on these levels.
To test the idea, the team examined 47 teeth of 25 different volunteers between the ages of 25 and 69. The history of all these people is known, including whether they have had children, whether they have major illnesses or even move from rural areas to urban areas. Crucially, they also know the age at which these incidents occurred.
The researchers then used a series of imaging techniques to study the bone ring at the root of the tooth and determine the age of the different rings. There is no doubt that rings of different colors seem to correspond to the age at which people experience major biological events.
For example, the team noted that there was a clear line in a sample corresponding to the patient’s 17.6 years of age. When the researchers examined the document, they found that the patient moved to the city from the rural environment at the age of 18, and that other rings of other teeth occurred around the time their owners were experiencing important events such as childbirth, menopause, systemic illness and even imprisonment.
“Teeth are not static and static parts of the bone,” said Paola Cerrito, the study’s lead author. It constantly adjusts and responds to physiological processes. Like the tree wheel, we can look at the ‘tooth ring’: the growing layer of tissue on the surface of the root. These rings are a faithful archive of individual physiological experiences and stress from pregnancy, illness to imprisonment and menopause, all of which leave a unique permanent mark. “
But researchers warn that this is not an exact science. Time can be delayed by several years, and can actually be tested only if the patient’s medical history is fully understood. You can’t tell what’s going on with a particular event just by looking at the “tooth ring”. But this is still an interesting discovery that could improve our understanding of our physiology.
The study was published in the journal Scientific Reports.