Objective To examine the oral health status and to determine factors that influence caries in visually impaired students of the Qingdao School for the Blind. Methods Oral health examination and oral health habits and knowledge questionnaire were conducted on 162 visually impaired students of the Qingdao School for the Blind in accordance with the oral health survey methods of the World Health Organization and the Third National Oral Health Epidemiological Survey. Results Among the 137 visually impaired students with permanent dentition,54.01% had dental caries and the mean number of decayed,missing and filled tooth surfaces（DMFS）was 1.23.The rates of gingival bleeding and dental calculus were 63.50%and 72.26%,respectively.Of the25 visually impaired students who were still within the replacement dentition period,12.00% had dental caries and the mean DMFS was 0.28.Spearman＇s correlation analysis showed that the presence or absence of caries was negatively correlated with the frequency of tooth brushing per day（r=-0.579,P〈0.01）,duration of tooth brushing（r=-0.457,P〈0.01）,and presence or absence of mouth rinsing or tooth brushing after meals（r=-0.432,P〈0.01）.On the other hand,the presence or absence of caries was positively correlated with the frequency of eating sweets before bedtime（r=0.557,P〈0.01）and the daily times of eating sweets（r=0.519,P〈0.01）. Conclusion Visually impaired students of the Qingdao School for the Blind have poor oral health and lack oral health knowledge.Oral health education should be reinforced among visually impaired students.
Acta Academiae Medicinae Qingdao Universitatis
visually impaired persons
dental health surveys