In orthodontics, retraction of teeth is the prerequisite after the therapeutic extraction of the first permanent premolar to close the space or to relive the crowding. There are various methods of space closure which is categorized under friction and frictionless mechanics. The retraction of the tooth can be either segmental or enmasse. To prevent anchorage loss, TADs are most commonly used. The present study will include subjects who are undergoing fixed mechanotherapy and require maxillary first premolars extraction. In this study, single canine distalization is opted for the space closure. Canine will be distalized with the help of active tiebacks type one using Alastic (3M Unitek) and O-Rings (Ormco) elastomeric modules on right and left side respectively. The subjects will be divided into two groups. Right side of the maxillary arch will be grouped under Group A using Alastic (3M Unitek) elastomeric modules. Left side of the maxillary arch will be grouped under Group B using O-Rings (Ormco) elastomeric modules. The impression will be made periodically at 0, 6 and 12 weeks. Models will be prepared periodically. Space will be measured on models at three time intervals with the help of standardized Digital Vernier Caliper.  The distance will be measured from the tip of the canine and the mesiobuccal groove of the 2^nd permanent molar of each maxillary right and left quadrant. There is limited data found in the literature till date for evaluating and comparing the space closure, using Alastic (3M Unitek) and O-Rings (Ormco) elastomeric modules in active tiebacks during distalization of canines. The present study will help the clinician to choose the best elastomeric modules for their patients.