Blot the canal dry with a large paper point, leaving the dentin visibly moist. 使用大量的纸尖吸干根管,但保持牙本质粘结所需的明显湿润。
Instead of a whiny turbine drill, he uses a flash of laser light to blast away dentin and enamel. 他用的是一道激光而不是烦人的涡轮钻来清除象牙质和牙齿的珐琅质。
Within30 months, small recognizable tooth crowns, containing complete bone-like dentin, a well-defined pulp chamber and even enamel, had formed. 三十个月内就形成小小但已可辨识的齿冠,有完整的像骨头的齿骨质层,一个非常明显、定的牙髓槽,甚至珐琅质。
dentin
[ noun ]
a calcareous material harder and denser than bone that comprises the bulk of a tooth
<noun.substance>
bone (calcified tissue) surrounding the pulp cavity of a tooth