Complications after mandibular setback with intraoral vertic
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Intraoral vertical ramus osteotomy is a safe surgical technique with a low complication rate and fast recovery. IVRO is an alternative technique for mandibular setback procedure in patients that can accept maxillomandibular fixation. The incidence of neurosensory disturbance is reduced with a higher incidence in female patients than in male patients.

The objective of the study published in the journal Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology was to assess the rate of complications and morbidity after mandibular setback with bilateral intraoral vertical ramus osteotomy (IVRO).

In total, 133 patients were included. The prevalence of neurosensory disturbance (NSD), surgical site infection (SSI), and other complications were registered two months and one year after surgery. The correlation between complications and age, gender, ASA-classification, body mass index (BMI), blood loss, and operation time was evaluated.

NSD was reported for 6.8% of the patients (9/133) two months after surgery (3.8% of the operated sites). The prevalence was significantly higher in female patients. Two patients described persistent unilateral reduced sensibility after one year (1.5%). In total, 0.8% of the operated sites (2/266) had persistent NSD after one year. None of the patients required prolonged hospitalization, and 95.5% (127/133) were discharged the day after surgery. None of the patients experienced severe bleeding, and only one patient developed SSI. There were no significant correlations between patient-specific or intraoperative parameters evaluated and registered complications.

Conclusively, the study shows that IVRO is a safe surgical technique associated with a low complication rate. IVRO can be an alternative technique for the mandibular setback in patients that can tolerate postoperative maxillomandibular fixation (MMF).

Source: https://doi.org/10.1016/j.oooo.2021.01.008
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