Phayayor oral paste is one of the Thai traditional herbs. It has a low price that can be easily accessed. It has been confirmed that Phayayor extract is safe for living organisms and it has an effect on wound healing 
The effect of Phayayor oral paste on the gingival healing of extraction wounds was investigated in this study. 
This study collects data from patients who visit the Oral surgery department of the College of Dental Medicine, Rangsit University for simple tooth extraction from February 2021 to January 2022. The data were collected among the patients aged 18 to 60 years old, and 22 subjects. The study and control groups were chosen by using two block randomizations. The experiment is to suture the simple extraction wound with one to two stitches with silk 4/0. Then apply a Phayayor oral paste to the tooth extraction wound in the study group and measure the distance of wound healing. On days 0, 3, and 5, the examiner used a dental caliper and digital caliper to measure the distance of wound healing. 
On days 3 and 5, the percentage changes of wound distance in the control group were 13.46±8.84 and 39.78±13.83, respectively, while the percentage changes of wound distance in the study group were 36.28±16.94 and 65.57±7.28. On days 3 and 5, the percentage of wound distance in the study group was substantially higher than in the control group. The assessment of the distance of wound healing of the control group on days 0-3 is 0.58±0.42 and on day3-5 is 1.24±1.08 which means the difference is -0.65±1.38. The result revealed that the assessment of the distance of wound healing of the study group on days 0-3 is 1.80±0.82 and on day3-5 is 1.42±0.60 which means the difference is 0.37±1.34. The distance between wound healing of the control group and the study group on days 0-3 and days 3-5 is not statistically different at p < 0.05.
Phayayor can accelerate wound healing in the first 5 days after the simple extraction.