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年轻恒前牙是指在长发育阶段的恒前牙。特点：①根尖或根尖孔尚未完全形成。根尖孔宽大呈漏斗状。②牙本质尚未完全形成。③髓腔与根管也较成年恒牙粗大。年轻恒牙的根尖在萌出后３～５年才能完成。７～１０岁的儿童其前牙正值此期，此年龄的儿童天性活泼好动，极易发生牙...
Young permanent anterior teeth refers to the long-term development of permanent anterior teeth. Features: a root tip or apical hole has not yet been fully formed. Apical foramen were funnel-shaped wide. ② dentin has not yet been fully formed. ③ medullary canal and root canal than the adult permanent teeth thick. The root tips of young permanent teeth in eruption after 3 to 5 years to complete. 7 to 10-year-old children whose anterior teeth are positive during this period, children of this age lively and motivated, prone to tooth ...