Clinical evaluation of the devitalizing effects on devitalizing paste without Arsenic in molars 无砷失活剂失活效果的临床评价
METHODS: 212 molars were diagnosed as acute pulpitis or chronic pulpitis, and randomized block designed into two groups: The experiment group: 104 cases were devitalized by devitalizing paste without Arsenic. 方法:将212例临床诊断为急性牙髓炎或慢性牙髓炎的磨牙随机分为2组,实验组104例采用无砷失活剂(PD,瑞士产)失活;