| 胎儿牙齿硬组织发育的临床应用解剖 |
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| 引用本文： | 王元银,侯爱兵,周健,陈乔尔,何家才,王银龙,程继光,徐文华.胎儿牙齿硬组织发育的临床应用解剖[J].解剖学杂志,2005,28(5):583-585. |
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| 作者姓名： | 王元银 侯爱兵 周健 陈乔尔 何家才 王银龙 程继光 徐文华 |
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| 作者单位： | [1]安徽医科大学口腔医学院口腔医院颌面外科,合肥230032 [2]安徽医科大学口腔医学院口腔医院解剖生理教研室,合肥230032 [3]安徽医科大学口腔医学院口腔医院组织病理教研室,合肥230032 |
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| 摘 要： | 目的：探讨国人胎儿牙齿硬组织发育状况。方法：对正常胎龄10-38周的胎儿上、下颌骨作连续切片，观察乳、恒牙胚及其相关结构发生规律。结果：牙体硬组织形成于14-20周，牙齿的增殖、钙化、萌出同时进行，牙釉质、牙本质厚度随胎龄增长而增加，各乳磨牙牙尖总是近颊尖最先发牛，恒牙板总是位于乳牙胚舌侧。结论：国人牙体硬组织发育成熟较低，牙釉质、牙本质厚度与胎龄呈正相关。
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| 关 键 词： | 胎儿 牙胚 牙发生 解剖学 |
Clinical anatomy of tooth hard tissue development in fetus |
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| WANG Yuan-Yin, HOLT Ai-Bing, ZHOU Jian, CHENG Qiao-Er, HE Jia-Cai, WANG Yin-Long, CHENG Ji-Guang, XU Wen-Hua.Clinical anatomy of tooth hard tissue development in fetus[J].Chinese Journal of Anatomy,2005,28(5):583-585. |
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| Authors: | WANG Yuan-Yin HOLT Ai-Bing ZHOU Jian CHENG Qiao-Er HE Jia-Cai WANG Yin-Long CHENG Ji-Guang XU Wen-Hua |
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| Institution: | Department of Stomatological College, Stomatological Hospital, Anhui Medical University, Hefei 230032, China |
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| Abstract: | Objective: To reveal the development of tooth hard tissue of fetus.Methods: Maxilla and mandible bone of normal fetus(gestational age from 10 to 38 weeks) were made into serial sections.The occurrence of tooth germ of deciduous and permanent teeth and dependency structure were observed.Results: Tooth hard tissue formed from 14 to 20 weeks;tooth proliferation,calcification and eruption occurred simultaneously;thickness of enamel and dentin ranged from 0.14 to 0.89 mm;bucco-tip always occurred first in milk molars;dental lamina of permanent teeth always located at tongue side of milk tooth.Conclusion: Maturity of tooth hard tissue formation in Chinese is lower;thickness of enamel and dention have a positive correlation with(gestational) age. |
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| Keywords: | fetus tooth germ odontogenesis anatomy |
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