唐山市高校学生齿龈内阿米巴感染状况

目的 调查唐山市高校在校学生齿龈内阿米巴的感染状况,并分析齿龈内阿米巴感染与生活饮食习惯及口腔健康状况的关系。 方法 2008年随机选择唐山市6所高校1～3年级学生进行问卷调查,内容包括口腔健康状况、刷牙习惯、是否经常嚼口香糖、饮食偏好、是否吸烟等。用消毒牙签取调查者口腔齿垢物或病灶表面附着物进行涂片,镜检齿龈内阿米巴感染情况。分析口腔健康状况、生活饮食习惯等与齿龈内阿米巴感染的关系。 结果 共调查551名大学生,齿龈内阿米巴感染率为28.3%（156/551）。其中男、女生感染率分别为30.4%（55/181）和24.6%（91/370）,两者差异无统计学意义（χ²=2.09,P＞0.05）;口腔健康者的齿龈内阿米巴感染率为20.8%（72/347）,有口腔疾患者的感染率为41.2%（84/204）,两者差异有统计学意义（χ²=26.41,P＜0.01）;经常刷牙者齿龈内阿米巴感染率为22.5%（53/236）明显低于不经常刷牙者的32.7%（103/315）,差异有统计学意义（χ²=6.97,P＜0.01）;经常嚼口香糖者齿龈内阿米巴感染率为18.3%（17/93）,低于不经常嚼口香糖者的30.4%（139/458）,差异有统计学意义（χ²=5.55,P＜0.05）。 结论 齿龈内阿米巴在唐山市高校学生中感染普遍,并与口腔卫生习惯和口腔疾病存在一定关系。

Entamoeba gingivalis Infection among College Students in Tangshan

Objective To investigate the prevalence of Entamoeba gingivalis infection in college students in Tangshan,and analyze the relationship between the infection and human behaviors. Methods 551 students of grades 1-3 from six colleges in Tangshan received questionnairing, which covered the oral health state, teeth-brushing, xylitol gum-chewing, diet fondness, and smoking. Specimens were taken from the tooth surface of the lesion or fouling materials by using disinfected toothpicks and the smears were observed microscopically to examine Entamoeba gingivalis infection. Results The prevalence of Entamoeba gingivalis infection was 28.3%（156/551）, 30.4%（55/181）and 24.6% in males and females（91/370）respectively（χ²=2.09,P>0.05）. The prevalence in students with or without oral disorders was 41.2% （84/204）and 20.8%（72/347）respectively, with a significant statistical difference（χ²=26.41,P<0.01）; it was 22.5% （53/236）and 32.7%（103/315）among students who cleaned their teeth regularly or irregularly（χ²=6.97,P<0.01）; it was 18.3%（17/93）and 30.4%（139/458）among those usually with or without chewing xylitol gum（χ²=5.55,P<0.05）. Conclusion Entamoeba gingivalis infection is common in the college students in Tangshan and it has a close relation to the oral hygiene habits and the presence of oral disorders.