Al-Marsoomi A, Al-Nashi Y
Oral Surg Oral Med Oral Pathol. 1980 Jul;50(1):89-90. doi: 10.1016/0030-4220(80)90337-0.
In a study of the deep carious lesions in forty extracted permanent teeth, 50% of the lesions showed the clinically hard layer to be sterile. The number of sterile cases in the 18 to 24-year age group is three times the number in the 25 to 35-year age group.
在一项对40颗拔除的恒牙深龋病变的研究中,50%的病变显示临床硬层无菌。18至24岁年龄组的无菌病例数是25至35岁年龄组的三倍。