Results from a study at Isfahan University of Medical Sciences show that green tea extract has a significant effect on the rapid cessation of cavity bleeding after tooth extraction and oozing. According to Isfahan University of Medical Sciences, Mehrdad Fanaei, a graduate of the Faculty of Pharmacy of this university, in his PhD dissertation, investigated the effect of green tea extract on preventing gingival bleeding after extraction of lower jaw teeth.
Tattoos, such as green tea, have long been regarded as a major cause of blood loss in ancient Iranian medicine. Tannin is a substance found in many plant extracts, including tea. Many tannin plants are used as astringents and blood thinners in gastrointestinal and skin disorders. Considering that tooth extraction can cause bleeding to the gum tissue and may require gum surgery. The study examined the effect of green tea on preventing gum bleeding. In this study, two groups of 31 patients volunteered to extract mandibular teeth. In the first group after extraction of tooth from the gas extracted from Stressel gas in the green tea extract and in the second group the gas without the extract was used and active bleeding was performed at precise pubic intervals until discontinuation and bleeding until one hour later.
The results showed that the mean bleeding time in the green tea group was significantly lower than the control group. Also, the number of people who had oozing at surgery one hour after surgery was significantly lower in the green tea group than in the control group. This report states that further studies may be applicable to most clinical trials.