Lateral cephalometric analysis of the stability of maxillary anterior repositioning

Rodrygo Nunes TAVARES, Luis Augusto PASSERI

This is a retrospective cephalometric study designed to investigate the stability after anterior maxilla repositioning, by Le Fort I osteotomy. Thirty cephalometric radiographs were selected, from ten patients submitted to one-piece surgical maxillary advancement, with no concomitant mandibular surgery, performed by the Division of Oral and Maxillofacial Surgery of Piracicaba Dental School – Unicamp. These cases were submitted to the same internal rigid ixation technique, with no use of bone grafts or any bone substitute. Three lateral cephalometric radiographs were obtained for each patient, immediately presurgery and postsurgery, and at least six months after surgery. Lines were draw upon the X-rays to serve as horizontal and vertical reference lines. The landmarks used to measure maxillary positional changes consisted of skeletal and dental features. Statistical analysis (paired t student test) showed no signiicant differences between the immediately postsurgery and at least six months postsurgery periods. We concluded that the anterior maxillary repositioning by Le Fort I osteotomy, using rigid internal ixation, with no bone grafts or any bone substitute, is a stable procedure.

Keywords: Le Fort I osteotomy. Stability. Internal rigid fixation. Orthognathic surgery.

Saturday, December 28, 2024 22:45