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第一恒磨牙在儿童6岁时萌出,是恒牙列中萌出最早、咀嚼功能最大的牙齿,也是支持颌间高度和保持上下牙弓近远中牙合关系的主要支柱,对儿童牙颌系统的生长发育至关重要,且与身体健康关系密切[1]。第一恒磨牙萌出最早,表面点隙、窝沟较多,患龋机会最高,严重者可导致早失[1]。12岁是恒牙龋病的易感时期,WHO将12岁选为全球性龋病检测年龄,以便
The first permanent molars eruption at the age of 6 children is the earliest eruption of permanent dentition, mastication function of the largest teeth, but also to support the intermaxillary height and the upper and lower dental arch close to the main pillar of the occlusion of the child dentition system Of the growth and development is crucial, and is closely related to physical health [1]. The first permanent molars erupted the first, surface point gap, pit more, suffering from the highest chance of caries, severe cases can lead to premature loss [1]. 12-year-old is a predisposition period of permanent tooth caries, WHO will be 12 years old as the global caries detection age, so