RESUMEN
Objective To explore a method of modified technique of sagittal split ramus osteotomy (SSRO) and to study the possibly more appropriate and effective methods for correction of mandibular de-formity. Methods 195 patients suffering from mandibular anomaly or accompanied by other deformities have been operated on by the modified or classical technique of SSRO. Results In the group of 105 cases treated by modified SSRO and the group of 90 classical SSRO, all the patients acheived excellent results. There was no statistic significance between the two groups. No complications occured, such as postopera-tive relapse, significant bleeding, postoperative infection, and others. Conclusion Since modified tech-nique of SSRO has more advantages than conventional classical technique, such as more area of bony con-tact, shorter-time operation, easier process: it is the preferred method for the correction of mandibular deformity. Accompanied by regularity and in time pre- and post-operational orthodontic therapy, it will be more widely used in the future.
RESUMEN
Objective: To study the treatment methodology of postoperative disostosis of maxilla in the patients with cleft palate by orthognathia. Methods: 10 cases (6 males and 4 females) of postoperative dysostois of maxilla in the patients with cleft palate were treated by orthognathia. Operation manners and orthodontic treatment were determined by orthodontists and surgeons before treatment. Orthodontic treatment included upper arch expansion, teeth alignment, leveling the Spee's curve etc. Operation on single jaw or double jaw, or extraction of one anterior tooth to decrease lower dlental arch and to coordinate with the upper jaw forward was conducted according to individual situations. Adjustment of intercuspids relation was conducted after operation. Results: In all the 10 cases discrepancy of upper and lower jaws were resolved, profiles of the faces were improved significantly, dental arch symmetry, physiological overjet and overbite were achieved. Conclusion: Orthognathia is effective in the treatment of postoperative dysostosis in the patients with cleft palate.