Abstract Objective：To investigate our university students’ perception of malocclusion firstly. To investigate the perception differences between students and orthodontists， and to analyze factors on perception difference. Better diagnosis for orthodontists， and giving college students the correct guidance and help.Method：A sample of 213 college students from 2012 to 2013 was selected randomly in our department. A questionnaire， which consisted of socioeconomic status， index of orthodontic treatment need and dental health component（ DHC） questionnaire， was proposed to them. Index of orthodontic treatment need comprised aesthetic component（ AC） and DHC. An orthodontist measured orthodontic dental models of participants. Participants chose AC degree and DHC degree by their subjective perception， and compared with an orthodontist chose AC degree and DHC degree by their objective measurement. Meanwhile， we had compared
the gender， place of residence， whether the one-child between students’ subjective perception of AC and DHC degree. Result：Objective measurement degree of orthodontist was higher than subjective perception degree of college students （P<0.05）. Subjective perception of college students and objective measurement of orthodontists had significantly positive correlation. DHC degree of female college students’subjective perception was higher than the male. AC and DHC degree
of urban college students’subjective perception was higher than the rural. AC and DHC degree of only child college students’subjective perception was higher than non-only child.Conclusion：Perception about malocclusion， dental health and aesthetic had significant difference between college students and orthodontists. More female college students than the male tended to think that their teeth were not enough healthy. Urban college students were more unsatisfactory about their
dental health than the rural. Only child college students were more unsatisfactory about their dental aesthetic and health than the non-only child， and it is necessary to further strengthen the educating of malocclusion knowledge and guiding their medical behavior.
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