Maryam Astan - Graduated of Experimental Sciences Field, Iran.

The purpose of this study is the effect of poor oral health on athletes' performance. The present research is an applied research and in terms of method is also descriptive-survey. The statistical population of this research is one of the dental clinics in Tehran. The population size of ۶۰ dentists and the sample size are ۵۲ based on Morgan table and sampling method is also available. In this study, the required data were collected using a ۲۴-item questionnaire. In thisstudy, the validity of the questionnaires was confirmed by experts and in order to determine the reliability, Cronbach's alpha method was used, the validity and reliability of which were ./۸۱۳, respectively. And ./۷۹۸ Was obtained. Then k-s test and one-sample t-test were used and data were analyzed by SPSS software. The results showed that poor oral hygiene such as not using toothbrushes, fluoride solution and floss, not repairing damaged and decayed teeth and usingtobacco and cigarettes have a negative effect on athletes' performance

Oral health, Athletes' performance