The main charging standard of root canal therapy is based on the number of root canals. The general cost of root canal filling is between 100- 150. As for the later dental crown cost, talk.an's excellent idea should be to use pure metal crowns for posterior teeth. The front teeth are porcelain crowns. Have backbone and choose a crown according to your own ability. After all, as long as the crown cover is in full compliance with safety standards, only the procedures done by doctors are not up to standard.