The golden ratio is one of the most interesting and mysterious secrets of nature. For decades it has been used in dentistry to create an aesthetic smile. This article presents the results of a study of teeth roots geometrical sizes based on the golden section. Evaluation of the roots sizeswas carried out taking into account the separation of each root into two «reinforcing roots». The obtained results allowedconstructing a numerical series, in which the values ratio quite closely matches the numbers ratio of the classical Fibonacci sequence. These findings suggest the presence of features in the form and dimensions of the human teeth roots, which typical formany living organisms,as well as explain the many regularities in perception of functional load in periodontium.
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