A fixed or movable device that can move a permanently displaced tooth to its proper position in the tooth arch.
Space Regainer is similar to Space Maintainer but has a spring. This device is used to retrieve space when the first molar has already begun to move in the remaining space of the original molar.
Space recovery may be performed using a strip and loop with sliding molar tubes and coil springs. It is operated with constant tension and may be used to move the projection mesially with a reciprocal distal motion. The permanent molar of this device may be designed to perform intermittent tooth movements.
The above space maker is produced by Danesh Bonyan Crescent Industry Development Company of Tehran from number 25 to +42 and is provided to respected dentists.