Replacement body and assembler

The replacement body is used for a dental cast, the dental cast comprises at least one mounting hole, a clamping groove is formed in the inner wall of the mounting hole, the replacement body comprises a replacement body, the replacement body extends in the first direction, a matching section is arranged at one end of the replacement body, and the matching section is matched with the clamping groove. One end of the replacement body is provided with a matching section, the other end of the replacement body is provided with a matching hole, the matching section is used for being connected with a fastener, the matching hole is used for being connected with a base table, a dental crown or a matching part of an assembler, the replacement body is further provided with at least one limiting boss, the limiting bosses extend in the first direction, and the limiting bosses are used for being clamped in the clamping grooves. According to the replacement body disclosed by the utility model, the rotation and sliding of the