The use of miniscrews (MSs) as temporary anchorage devices in orthodontics has gained increased attention among researchers in recent years. However, these screws are usually used in permanent dentition. This case report discusses a patient for which an MS was used. An 11-year-old male with mixed dentition presented an ectopic eruption in his mandibular right canine had ectopic eruption. This altered pattern of eruption was corrected using surgical exposure and orthodontic traction with an elastic chain, assisted by a 2 mm × 10 mm interradicular MS placed between the patient's first and second lower deciduous molars. After 5 months with this traction, the patient's right lower cuspid ectopic guide was corrected. This use of an interradicular MS in mixed dentition was found to be both useful and safe.