Stability After Bilateral Sagittal Split Osteotomy Setback Surgery With Rigid Internal Fixation: A Systematic Review

Abstract

Neither large increase nor decrease of relapse was seen when short-term values were compared with long-term. Bilateral sagittal split osteotomy for mandibular setback in combination with orthodontics is an effective treatment of skeletal Class III and a stable procedure in the short- and long-term. The etiology of relapse is multifactorial: the proper seating of the condyles, the amount of setback, the soft tissue and muscles, remaining growth and remodeling, and gender were identified. Age did not show any correlations. To obtain reliable scientific evidence, further short- and long-term research of bilateral sagittal split osteotomy setback with rigid internal fixation should exclude additional surgery, ie, genioplasty or maxillary surgery, and include correlation statistics.

Cone-beam computed tomography evaluation of short- and long-term airway change and stability after orthognathic surgery in patients with Class III skeletal deformities: bimaxillary surgery and mandibular setback surgery

“…The upper airway, tongue, soft palate and their adaptation to the new environment of the shortened mandible could play an important role in relapse 16 . There have been few studies of upper airway changes related to the extent of mandibular setback and maxillary advancement.…”

“…There have been few studies of upper airway changes related to the extent of mandibular setback and maxillary advancement. JOSS et al 16 reported that after mandibular surgery, skeletal displacement inevitably occurs in the mandible to some degree; that is, skeletal relapse occurs. In the present study, the mean extent of skeletal relapse reached approximately 22% of the mandible in group A, and 18% of the maxilla and 18% of the mandible in group B.…”

Sequential changes of postoperative condylar position in patients with facial asymmetry

“…[16][17][18][19][20][21] The resorptive remodeling activity on the condyle could be directly related with postoperative relapse. Previous studies found that the condylar head undergoes significant decreases in condylar height and surface changes during remodeling in the anterior and superior areas of the sagittal plane and superior and lateral areas on the coronal plane.…”

Orthodontic camouflage versus orthognathic surgery: A comparative analysis of long-term stability and satisfaction in moderate skeletal Class III

“…The more frequent rate of skeletal relapse in the surgical group is not surprising, as those patients may have undergone a component of skeletal change that the orthodontic patients did not. The initial soft tissue profile, remodeling processes of the hard tissues and muscular factors must all be considered as reasons for the long-term relapse [14].…”