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Evaluation of long-term soft tissue changes after bimaxillary orthognathic surgery in Class III patients
Halise Aydemir1, Ruchengiz Efendiyeva2, Hakan Karasu3
1a Assistant Professor, Turgut Özal University Oral and Dental Health Care Center, Ankara, Turkey.
Objective:
To assess soft tissues in the short and long term after bimaxillary surgery in Class III patients by comparing the hard tissue changes and results between time periods.
Materials And Methods:
Twenty-six Class III adult patients treated with bimaxillary surgery were included in the study. Cephalometric records were taken before surgery (T1) and 5 months (T2), 1.4 years (T3), 3 years (T4), and 5 years (T5) after surgery.
Results:
There was no significant relapse in skeletal parameters. Overjet was significantly reduced between T4-T3 time intervals (P < .01). There were significant increases in Sn-HR, ULA-HR, LLA-HR, B-B(∧) (P < .01), and B(∧)-HR (P < .05) between T4-T3 time intervals. There was no significant change in the soft tissue parameters between T5-T4 time intervals.
Conclusion:
Soft tissue vertical relapse occurs in skeletally stabile Class III bimaxillary surgery patients in the first 3 years after surgery.
