six-year molar meaning in Chinese
六岁磨牙
Examples
- The six - year molars are the first permanent molars which erupt at the age of six . there are a total of four six - year molars , one in each quadrant , situated right behind the last primary molars . the four molars are vital to the normal occlusion of permanent teeth
小朋友六岁时，他下颌乳臼齿后面长出大牙齿，即第一大臼齿，共有四只，位置在口腔四端乳臼齿的后面，由于通常在六岁左右长出，故称为六岁齿。