Orthodontic mini-screw is a boon both to patient and the Orthodontist. Nowadays, extra alveolar mini screws have gained increasing popularity to overcome the shortcomings of conventional inter-radicular mini-screws These are the mini-screws which are placed in extra- alveolar sites like infra-zygomatic region, buccal shelf area and palatal regions. They offer the orthodontist to treat complex malocclusion with elaborate tooth movements like en masse distalization expansion, mesialization, intrusion etc, also with an added advantage of preventing root damage. The apt use of these extra alveolar mini-screws aids the borderline surgical cases to be treated non-surgically This book provides an insight about extra-alveolar mini-screw placement sites, anatomical boundaries, procedures of their placement and biomechanical considerations. Also, the 3dimensional location of safe zones using CBCT devices included.