Mini Implants in Orthodontics

Abstract

In orthodontic treatment teeth are moved to desired position, during this movement some undesirable movement also occurs. To prevent such undesirable movement anchorage units are used. The introduction of skeletal anchorage in the form of temporary anchorage devices (TADs) or miniscrews has greatly benefited orthodontists in finding a way of anchorage control with minimum patient compliance and without a complicated clinical insertion and removal procedures. The mini-implant placement guide was fabricated using rectangular 0.017 x 0.025/0.019 × 0.025 stainless steel (SS) archwire, the wire was bent vertically distal to second premolar along the long axis. The vertical length of the wire is according to the desired length for micro-implant insertion, which is generally 6-7 mm apical to the alveolar crest. After the vertical bend,3-4 mm horizontal bend (which is an interradicular space between two roots) is given in the interradicular space between 2nd premolar and 1st molar. A CBCT is taken to confirm the correct position of template guide. The point of mini-implant insertion site is just at the middle of the horizontal bend, which can be readily marked using a marker or a micromotor burr. This micro-implant placement guide is simple in design, easy to fabricate, inexpensive, supportive and can be used with a variety of mini-screws.This article provides comprehensive information about Temporary Anchorage Devices (TAD’s).