论文部分内容阅读
无牙畸形常为先天性外胚层发育异常,又称无汗性外胚层发育不全综合征,有完全性和不完全性两种。本病病因较复杂,一般认为是由于外胚层组织退化性发育或发育不全而造成。本病可分为遗传性和非遗传性两型:遗传性无牙畸形,有明显家族史,病变程度和差异取决于致病基因的遗传方式,一般多见近亲婚配的后代;非遗传性无牙畸形,无家族史,致病原因可能与母亲妊娠期受病毒感染或服用某些有害药物及污染食物,牙胚发育过程中代谢紊乱、营养障碍均能影响牙胚的发育,导致无牙畸形。
Toothless tooth often for congenital ectodermal dysplasia, also known as no sweat ectodermal hypoplasia syndrome, there are two complete and incomplete. The etiology of this disease is more complicated, generally believed to be caused by degenerative development or hypoplasia of ectodermal tissues. The disease can be divided into two types of hereditary and non-hereditary: hereditary toothless deformity, a clear family history, the degree of disease and the difference depends on the pathogenic genetics of the heredity, generally more common inbreeding with offspring; non-hereditary Dental malformation, no family history, the cause of the disease may be infected with the mother during pregnancy or taking certain harmful drugs and contaminated food, tooth development disorders, metabolic disorders, nutrition disorders can affect the development of the tooth germ, resulting in toothless deformity .