IADR Abstract Archives
Orthognathic Surgery Considering SDB in the Patient With Mandibular Prognathism
Objectives: One-jaw orthognatic surgery tend to more excess the setback movement than two-jaw surgery. In past study, excessive mandibular setback at the orthognathic surgery has been associated with the pharyngeal airway space narrowing. Therefore, orthognathic surgery considering sleep disordered in breathing was preferred to Two-jaw surgery. The aim of this study was to examination of the short-term effect for sleep disordered in breathing from the orthognathic surgery.
Methods: A male patient 20 years ten months of age came to the orthodontic clinic of our university hospital. The patient’s chief complaints were a discomfort in the lower jaw caused by prognathism. After pre-operative orthodontic treatments, two-jaw surgery were operated. Airway width were measured by SPAS, MAS, IAS at the pre-operate and 1 day and 1moth after surgery. The participants underwent a sleep study using a portable diagnostic device (at the Post-operate, 7,14,21days after surgery) and polysomnography (at the Pre surgery and 3 months after the surgery).
Results: Although, from the prediction of the surgery, the maxillary advancement was 4.0 mm and the mandibular setback was 9.0mm, the surgery results were maxillary 4.0 mm advanced and mandibular 6.0 mm set backed. Just after the surgery, SPAS was narrowed 3.0mm, nevertheless SPAS was separated in 3.0mm. The another points of width (MAS, IAS) were not separated. From portable diagnostic device data, at the 7days after surgery, RDI and Hypopnea Index were increased. But, 14 and 21days after, these indices decreased.
Conclusions: Two-jaw orthognathic surgery that considering sleep disordered in breathing in the patient with mandibular prognathism prevents the increase in upper airway resistance.
Methods: A male patient 20 years ten months of age came to the orthodontic clinic of our university hospital. The patient’s chief complaints were a discomfort in the lower jaw caused by prognathism. After pre-operative orthodontic treatments, two-jaw surgery were operated. Airway width were measured by SPAS, MAS, IAS at the pre-operate and 1 day and 1moth after surgery. The participants underwent a sleep study using a portable diagnostic device (at the Post-operate, 7,14,21days after surgery) and polysomnography (at the Pre surgery and 3 months after the surgery).
Results: Although, from the prediction of the surgery, the maxillary advancement was 4.0 mm and the mandibular setback was 9.0mm, the surgery results were maxillary 4.0 mm advanced and mandibular 6.0 mm set backed. Just after the surgery, SPAS was narrowed 3.0mm, nevertheless SPAS was separated in 3.0mm. The another points of width (MAS, IAS) were not separated. From portable diagnostic device data, at the 7days after surgery, RDI and Hypopnea Index were increased. But, 14 and 21days after, these indices decreased.
Conclusions: Two-jaw orthognathic surgery that considering sleep disordered in breathing in the patient with mandibular prognathism prevents the increase in upper airway resistance.