[A clinical study on treating the obstructive sleep apnea syndrome with orthognathic surgery]

When severe mandibular hypoplasia accompanying obstructive sleep apnea syndrome (OSAS) were treated by the orthognathic surgery, the results were quite successful not only in patients' profile, occlusion and functions, but also in the subjective and objective evaluations related to OSAS. The paper summarizes the methods and surgical procedures of treating OSAS with orthognathic surgery through the diagnoses and treatment of a group cases suffering from severe mandibular hypoplasia accompanying OSAS. Severe mandibular hypoplasia can cause not only the deformity and the disorder of occlusion, but also the OSAS. The advancements of mandible and hyoid with orthognathic surgery can improve the patients'prfile, occlusion and expand the patency of upper airway, so it can cure OSAS.

[The observation on the disinfecting efficiency of the disinfectant 93]

Disinfectant 93 is a colorless and transparent liquid. It contains surfactant and hand-protective. Its major component is Di(octyl amino-ethyl) glycine hydrochloride. 99.8% natural bacteria could be removed from the medical staff's hands by using the disinfectant 93 to scrub for 1 min twice. According to the standard of the Ministry of Public Health, it is allowed that the amount of bacteria on the hands is less than equal to 10cfu/cm2 under the condition of class III, and less than equal to 5cfu/cm2 under the condition of class I [symbol: see text] II, in which the qualification rate reached to 100% and 98%, respectively. The average elimination rate of natural bacteria reached to 99.5% and 99.3%, when the hands of surgical operators were disinfected with the disinfectant 93 after scrubbing and brushing with soap. The results showed that disinfecting efficiency of the disinfectant 93 was stronger, its continued effects were also visible, and it wasn't irritative for skin.

[Cranial bone graft in oral and maxillofacial surgery]

The sufficient donor bone volume is important to restore congenital, developmental and accidented defects of facial skeleton. In recent years, the outer table of cranial bone, as a better donor source, has been used in maxillofacial and craniofacial surgery extensively. But no clinical report was found in China. In this paper 16 cases were reported (5 cases of alveolar cleft, 5 cases of secondary deformity after cleft palate and ankylosis of TMJ, 6 cases of developmental deformity of jaws). All of these cases were treated by using cranial bone graft in strips or bone dust during orthognathic operations. The result showed no any complications in all cases. Compared with iliac and rib grafts, the outer table of cranial bone graft showed distinct advantages: greater graft volume survival, little postoperative pain at the donor site, and the skin incision within the hairline.