Anchorage in orthodontics is of prime importance for effective results. With the introduction of temporary anchorage devices (TADs) as skeletal anchorage method its use has been popularised. Although all anchorage systems have their own merits but they are often associated with certain demerits too. Since, literature is ooded with articles documenting the success rate but, as there are always two facets to everything, an insight to the failures of TADs should also be unravelled. So, review was done with the objective to evaluate the factors responsible for the failure of mini implants.Strategic and through search of the literature in four major databases was undertaken for data extraction and conclusion was drawn that mini implant failure is a multifactorial problem which includes mini implant related factors, clinician related factors and patient related factors.