论文部分内容阅读
龋病是一种危害人类牙齿最常见的多发病,世界卫生组织将龋齿列入预防医学中仅次于心血管和癌症之后的第三位重要疾病加以预防。在我国龋病的发病率仍很高,尤以12岁以下儿童更为普遍.我们对西安地区901例儿童采用FTT—8型氟离子透入防龋仪进行防龋处理。透入工作电流每路0.4～0.5mA,采用自行设计的防龋牙合托盘作为载药及透入的特殊工具。6～15岁儿童及青少年采用2％氟化钠水溶液,3～5岁幼儿采用1％氟化钠水溶液作为透入药液。时间每次透入6分钟。为了便于防龋效果的对比观察,我们按群体随机化原则分为5组,设一对照空白组同时将透入儿童分1年内透入1次、2次、3次、4次、四个组进行对比观察,对照空白组50例不做任何防龋措施,1年后复查新生龋患人数35人,新生龋发生率为70％.从4个不同次数的透入组看氟离子透入组1年后新生龋发病情况以空白对照组增加最多(占70％);透入1次为35％,透入2次组27.76％,透入3次组为18.79％,透入4次组为13.89％,新生龋减少率随透入次数增加百分比逐渐增高,由5％上升至80％。发病最高的空白组与发病最低组相差5倍。说明1年经过氟离
Caries is the most common and frequently occurring disease that is endangering human teeth. The World Health Organization puts the prevention of dental caries the third most important disease after preventive cardiovascular medicine and cancer. In China, the incidence of dental caries is still very high, especially in children under the age of 12. 901 children in Xi'an are treated with FTT-8 fluoride ion penetration caries prevention instrument. Through into the working current of 0.4 ~ 0.5mA each way, using self-designed dental caries pallet as a special tool for drug loading and penetration. 6 to 15-year-old children and adolescents with 2% aqueous solution of sodium fluoride, 3 to 5-year-old children with 1% sodium fluoride aqueous solution as penetrating liquid. Each time penetrate 6 minutes. In order to facilitate the comparison of anti-caries effect, we divided the patients into 5 groups according to the principle of group randomization. At the same time, a control blank group also infiltrated the children into 1, 2, 3, 4 times a year Compared with 50 cases of blank control group did not do any anti-caries measures, one year after the review of the number of new caries 35, the incidence of neonatal caries was 70% .From 4 different times the penetration group see fluoride ion penetration group The incidence of neonatal caries in one year increased to the highest in the control group (70%). The incidence of caries in one time was 35%, that in the second group was 27.76%, that in the third group was 18.79% 13.89%. The rate of newborn caries reduction increased with the increase of the number of penetration, from 5% to 80%. The highest incidence of the blank group and the lowest incidence of 5-fold difference. Explain 1 year after fluoride