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口腔组织原基在胚胎第二个月时发生,母亲病理性妊娠对小儿口腔组织和牙颌系统的形成有不利影响。作者检查年龄4～7岁的小儿1156例,其中母亲曾患妊娠中毒症者246例列为不利组,其余者母亲生理妊娠作为对照组。检查结果,不利组患龋率高达73.8±2.9%,对照组为56.7±2.2%。对照组大部分是1度龋,定位于(牙合)面和窝沟部。不利组多为活动性龋,定位于磨牙邻面,上切牙牙颈部有对称性园彤龋。不利组和对照组的区别还表现在:
Oral tissue primordia occur on the second month of the embryo, and maternal pathologic pregnancy has a detrimental effect on the formation of oral tissues and dento-maxillofacial systems in children. The authors examined 1156 children aged 4 to 7 years old, of whom 246 were mothers with gestational toxicosis were classified as unfavorable group, and the remaining mothers gestational pregnancy as a control group. Examination results, adverse group caries rate as high as 73.8 ± 2.9%, control group was 56.7 ± 2.2%. The control group mostly consisted of 1 degree caries, located on the occlusal surface and fossa. Adverse group mostly active caries, located in the molar adjacent to the upper cervical incisors have symmetrical Park Tong caries. Adverse group and control group also showed the difference: