目的:调查口腔正畸治疗后牙釉质脱矿的发病情况,并探讨对牙釉质脱矿的预防。方法:对90例使用固定矫治器正畸治疗患者治疗前后牙釉......

The commercial application of the decalcifying agent JCM-2004RPD at Khartoum Refinery Co.Ltd. is introduced in this arti......