Teeth whitening is one of the ways to increase beauty, which makes a person's face look more beautiful, and as a result, increases a person's self-confidence. Yellow teeth cause discomfort to many people; Therefore, many people go to the dentist to whiten their teeth. In our clinical trial study, 126 patients referred to the dental school of Yazd University of Medical Sciences were divided into two groups of 63 people and then one of them. Assafoetida and chlorhexidine mouthwashes were randomly selected according to the envelope method and administered for one week. After supra gingival scaling followed by brushing, patients were asked not to use any other method to control plaque for a week, and only twice a day, a tablespoon (approximately 15 ml) was prescribed each time. Rinse completely in the mouth for half a minute and do not eat anything until an hour later and do not rinse your mouth with water.
This report presents some of the 63 patients referred to the School of Dentistry of Yazd University of Medical Sciences, taking into account the conditions of inclusion in the study. According to the table below, 48 of them stated that their tooth color It has turned dramatically white.
 

Keywords: Asafoetida mouthwash, Teeth whitening

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