LAUSR

tps://doi.org/10.1016/j.jds.2021.06. 91-7902/a 2021 Association for Denta e CC BY-NC-ND license (http://creati In the cases that require interdisciplinary treatment, prosthetic reconstruction is usually the last step of the rehabilitation. However, free-end edentulism with insufficient occlusal support may cause unstable occlusion after orthognathic surgery (OGS), therefore implantation at appropriate positions before OGS can help to determine the position of the proximal segment during surgery. This 29-year-old female patient wished to restore her left side chewing function and to improve her facial appearance. She had facial asymmetry with the mandible deviated to the right side, maxillary arch left-side-down and mandibular arch left-side-up occlusal plane canting (Fig. 1A). Maxillary anterior teeth were tipped towards the right side and mandibular dental midline deviated towards the right side for approximately 4 mm, deep overbite from the right maxillary central incisor to the left maxillary first premolar (Fig. 1B). There was a minor crowding on both maxillary and mandibular arches, with Class II molar and canine relations (Fig. 1C, D and E). The left mandibular molars were missing with opposing arch teeth elongation that jeopardized spaces for prosthetic reconstruction (Fig. 1F). A prominent difference in bilateral condylar height was noted from the panoramic radiography, with the right condylar head mild flattening without any symptoms (Fig. 1G). Treatment objectives were to relieve crowding, create space for implant prosthesis, and correct facial asymmetry with OGS. Two weeks after full mouth fixed appliance bonding, temporary anchorage devices (TADs) were placed between