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龋齿是人类口腔中最多发的疾病,对健康危害相当严重。据各地近年调查结果,我国学龄儿童龋患率约为50％,而且无论乳牙还是恒牙,都是第一、第二磨牙为龋病最好发的部位。 第一恒磨牙(又称六龄齿)是形态大、功能强的牙齿,也是第一位易患龋病的牙齿。六龄齿在恒牙中萌出最早,一般为六岁,它是咀嚼食物发挥作用最多的牙齿。这个牙可以负担的压力很大,有人测定,成年男子上下六龄齿咬合力可达72公斤,女子则达46公斤。由于它本身结构的特点,在咀嚼食物时,尤其对磨碎过程起主要作用。食物在口腔咀嚼是消化的第一关,只有磨碎才能提高食物的消化率和营养成分的更完全吸收。可见,六龄齿对儿童发育及健康有直接作用。此外,人的机体是统一的整体,任何器官发生疾患都会影响全身。如果六龄齿或
Dental caries is the most common disease in human oral cavity, and it is very harmful to health. According to the findings of recent years, the prevalence of caries among school-age children in our country is about 50%, and both primary teeth and permanent teeth are the best. The second molars are the best sites for caries. The first permanent molars (also known as six-year-old teeth) is a large form, powerful teeth, but also the first tooth susceptible to dental caries. Six-year-old teeth in the permanent eruption of the earliest, usually six years old, it is chewing food to play the role of the most teeth. The tooth can afford a lot of pressure, it was determined that the adult male occlusal force of up to six teeth up to 72 kg, while women reached 46 kg. Due to the nature of its structure, it plays a major role in the grinding process especially when chewing food. Chewing food is chewing in the mouth is the first pass, only the grated to improve food digestibility and more complete absorption of nutrients. Visible, six-year-old teeth have a direct effect on child development and health. In addition, the human body is a unified whole, any organ disease will affect the whole body. If six-year-old teeth or