Dentists were discouraged by the strange case that occurred with the 36-year-old man. The victim turned for help to doctors with usual symptoms – pain in the tooth. Initially, doctors saw on the tooth a green dot, which they firstly took for a piece of salad left after eating. Later they managed to establish that the plant actively germinates in the oral cavity. According to the Aesculapius, the hole formed by the caries and the absence of the lower tooth created favorable conditions for the development of the guava seed. According to preliminary estimates, the germ is about 10 days old.