The gas product is pulped away by the blower while the solid product is discharged by the spiral discharging device through the bottom canalorifice.
其中气态产物通过上部管口被风机抽走，固态产物则通过下部管口经螺旋出料器排出。
2
Objective To study the shape and location of root canalorifice in maxillary first permanent molar and provide a morphological basis for locating canalorifice in endodontic therapy.
目的研究上颌第一磨牙根管口形态和位置关系，为根管治疗时寻找根管口提供解剖学依据。
3
Objective:To introduce a new prefabricated post-and -core system, a helical drilling bit and a prefabricated post-and -core consisting of a root canalorifice bur which was designed by the author.