How Can We Achieve Maximum Maxilla Expansion Using the Maxillary Multi-segmentation Technique in Orthognathic Surgery?

Aims: To describe maxillary multi-segmentation technique (MMST) during orthognathic surgery illustrated through a clinical case. Study Design: Original Research Article. Methodology: Maxillary transverse deficiency is a complex etiological condition that can impact individuals of all ages. In patients with transverse maxillary deficiencies greater than 5 mm who have reached skeletal maturity, surgically assisted maxillary expansion (SAME) is the treatment of choice. The MMST offers an alternative for correcting dentofacial deformities in multiple planes in a surgical procedure. So, orthodontic considerations and surgical considerations were described and illustrated through a clinical case. A 42-year-old male e with dentoesqueletal deformities Class III due anterior-posterior and transverse maxillary and paranasal deficiency and anterior-posterior mandibular excess. The surgery was carried out through Le Fort I osteotomy in combination with a segmentary osteotomy and bilateral setback sagittal split osteotomy. Clinical and cone beam computed tomography post operatory controls were made during the first 3 months Results: MMST demonstrated an excellent potential for transverse maxillary expansion of 14mm trans surgically, with preserved stability, with a three-month follow-up. Conclusion: Our results can be considered highly stable in both the postoperative and long-term periods compared to adult patients undergoing surgically assisted maxillary expansion with tooth-borne expanders. We do not have clinical findings regarding SAME using an expander supported by the palatal bone.