恒牙胚缺失的乳牙牙根吸收明显晚于恒牙胚存在的乳牙。
Root resorption of deciduous tooth without permanent tooth germ was significantly delayed than the deciduous tooth with permanent tooth germ.
恒牙胚是引起乳牙生理性根吸收的重要因素，但却非唯一的因素。
The permanent tooth germ plays an important role in physiological root resorption of deciduous tooth, but not the alone factor.
结果：SHIP在破骨细胞、破牙细胞和恒牙胚釉质层表达阳性。
RESULTS:SHIP positive signals were observed in the osteoclasts, odentoclasts and enamel of permanent tooth germ.
目的：探讨犬乳恒牙替换过程中血管内皮生长因子（VEGF）在犬恒牙胚发育中的表达及意义。
Objective To study the expression and significance of Vascular Endothelial Growth Factor(VEGF) in the development of dogs permanent teeth germs.
下面就破牙细胞及其相关信号通路、继承恒牙胚对乳牙根吸收的影响和继承恒牙胚缺失下的乳牙根吸收作一综述。
This review will introduce odontclast and its related signal cascades and the cor-relation of permanent successor with physiological root resorption of primary tooth.
乳恒牙替换是动物牙齿及颌面部生长发育的重要阶段，包含有乳牙根、牙槽骨的吸收、恒牙胚的发育和恒牙萌出等一系列复杂的生理过程。
The replacement of primary and permanent teeth is an important part that belongs to the growth and development of animals' teeth and maxillofacial region.
结果RANK的阳性信号出现在乳牙根吸收面的破牙细胞和接近牙胚的牙槽骨陷窝中的破骨细胞、恒牙胚的成牙本质细胞和前期牙本质中。
Result RANK positive signals were observed on the odontoclasts in the absorbed lacunae of deciduous teeth roots and osteoclasts in the alveolar bone near.
乳牙根充糊剂除需具有恒牙根充糊剂的特性外，还需具有充填后能与乳牙牙根同步吸收、对乳牙根尖周组织和恒牙牙胚无害等性质。
Root canal filling pastes for primary tooth have to meet more needs than paste for permanent tooth, such as being absorbed with root simultaneously and doing no harm to permanent tooth germ.
乳牙根充糊剂除需具有恒牙根充糊剂的特性外，还需具有充填后能与乳牙牙根同步吸收、对乳牙根尖周组织和恒牙牙胚无害等性质。
Root canal filling pastes for primary tooth have to meet more needs than paste for permanent tooth, such as being absorbed with root simultaneously and doing no harm to permanent tooth germ.
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