初步探讨南京市视力障碍儿童的患龋现状、龋活跃性和口腔卫生习惯及相关性。

按照世界卫生组织（WHO）标准和第四次全国口腔健康流行病学调查要求，于2020年9—10月对南京市某盲人学校38名4~13岁视力障碍儿童进行口腔健康状况及龋活跃性检测，并由监护人完成口腔卫生习惯问卷调查。使用SPSS 26.0统计软件，采用Fisher确切概率法进行不同性别间患龋率、龋充填率及口腔卫生习惯比较，采用非参数检验（Kruskal-Wallis检验和Mann-Whitney检验）进行不同性别间龋活跃性，以及不同龋活跃性组别之间龋失补牙数和口腔卫生习惯比较，通过Spearman相关性分析探索患龋情况与龋活跃性、口腔卫生习惯之间的关系。

问卷调查共发出38份，回收38份，其中有效问卷37份。受检者总患龋率为68.4%，龋均为3.89 ± 4.24，龋充填率为7.91%，龋活跃性平均得分为（1.11 ± 1.41）分，不同性别之间患龋情况与龋活跃性差异无统计学意义。龋活跃性与龋失补牙数相关（r = 0.499，P = 0.002），是否患龋与刷牙方式相关（r = -0.405，P = 0.013），其他口腔健康行为与患龋情况无显著相关性。

视力障碍儿童口腔健康状况相比健康同龄人更加严峻，且缺乏相应治疗。应加强对该特殊人群口腔健康的关注，并建立健全相关公共卫生政策措施。

To evaluate the occurrence of dental caries, caries activity, oral health behaviors and their associations in children with visual impairment in Nanjing School for the Blind.

Thirty-eight children with visual impairment aging from 4 to13 were examined for their dental caries according to WHO standards and requirement of the 4th National Oral Health Epidemic Study. The study was carried out during September 2020 to October 2020. Caries activity was tested using Cariostat method. Questionnaire about oral health habits were obtained from the main caregivers of the children. Software SPSS 26.0 was applied for statistical analysis. Fisher exact test and non-parametric test were carried out to compare caries prevalence, dmft/DMFT, filling rate, caries activity as well as oral health habits between boys and girls. Spearman′s correlation analysis was used to evaluate the correlation between caries and caries activity, as well as caries and oral health habits.

A total of 38 questionnaires were retrieved, among which 37 were valid and 1 was invalid. Caries prevalence of the whole examined population was 68.4%. The mean dmft/DMFT was 3.89 ± 4.34. The filling rate was 7.91%. The mean score for caries activity was 1.11 ± 1.41. No significant different was observed between boys and girls regarding caries prevalence and caries activity. Caries activity was significantly correlated with dmft/DMFT (r = 0.499, P = 0.002) . The way children brush their teeth was significantly correlated with whether they have caries or not (r = -0.405, P = 0.013) . No other factor was found to be significantly correlated with occurrence of caries.

With not enough proper treatment, the oral health status of children with visual impairment was more serious when compared with their healthy peers. More attention should be paid to these children and proper public health policies as well as public health measures should be proposed to improve the oral health situation of children with visual impairment.