Jälevik B, Klingberg G, Barregård L, Norén J G
Department of Pedodontics, Faculty of Odontology, Göteborg University, Sweden.
Acta Odontol Scand. 2001 Oct;59(5):255-60. doi: 10.1080/000163501750541093.
The permanent teeth of 516 7- and 8-year-old Swedish children from a low-fluoride area were examined for developmental enamel defects. Special attention was paid to demarcated opacities in permanent first molars and permanent incisors (MIH). The examination was done in their schools, using a portable light, a mirror, and a probe. The modified DDE index of 1992 was used for recording the enamel defects, supplemented with a further classification into severe, moderate, and mild defects. Demarcated opacities in permanent first molars were present in 18.4% of the children. The mean number of hypomineralized teeth of the affected children was 3.2 (standard deviation, 1.8), of which 2.4 were first molars. Of the children 6.5% had severe defects, 5% had moderate defects, whereas 7% had only mildly hypomineralized teeth. In conclusion, hypomineralized first molars appeared to be common and require considerable treatment in the Swedish child population.
对来自低氟地区的516名7至8岁瑞典儿童的恒牙进行了发育性釉质缺陷检查。特别关注了第一恒磨牙和恒切牙（MIH）中的界限性混浊。检查在他们的学校进行，使用便携式灯光、镜子和探针。采用1992年修改后的DDE指数记录釉质缺陷，并进一步分为严重、中度和轻度缺陷。18.4%的儿童第一恒磨牙存在界限性混浊。受影响儿童的矿化不足牙齿平均数量为3.2颗（标准差为1.8），其中2.4颗是第一恒磨牙。6.5%的儿童有严重缺陷，5%有中度缺陷，而7%只有轻度矿化不足的牙齿。总之，矿化不足的第一恒磨牙在瑞典儿童群体中似乎很常见，需要大量治疗。
