Clinical observation of inferior alveolar nerve block combined with parecoxib sodium intravenous analgesia after mandible orthognaxillary surgery / 口腔疾病防治

Objective @# To compare the analgesic effect and safety of bilateral inferior alveolar nerve block combined with parecoxib sodium analgesia and simple intravenous analgesia pump in analgesia after orthognathic surgery.@*Methods @#Forty patients with simple ascending sagittal split osteotomy and ankle plasty were randomly divided into the experimental group and the control group, with 20 patients in each group. The experimental group received 2 mL 1% ropivacaine by inferior alveolar nerve block anesthesia on both sides. Immediately after surgery, parecoxib sodium 40 mg was intravenously administered. The control group was given an intravenous analgesia pump for analgesia. Pain intensity (VAS pain score) and Ramsay sedation score were recorded at 2 h, 4 h, 8 h, 24 h, 48 h after operation, and the incidence of postoperative adverse reactions was observed.@*Results@#There was no significant difference in pain intensity and Ramsay sedation score between the two groups at each time point (P>0.05). During the analgesic treatment, the incidence of nausea and vomiting in the experimental group was significantly lower than that in the control group (P<0.05).@*Conclusion@# Bilateral inferior alveolar nerve block combined with parecoxib sodium analgesia and simple intravenous analgesia pump are effective for analgesia after mandibular orthognathic surgery, but the former has a lower incidence of adverse reactions, more suitable for analgesia after mandibular orthognathic surgery.

A clinicostastical study of inpatients of orthognathic surgery between 1993-2002

Effect of orthodontic and surgical treatments of skeletal crossbite on the electromyographic activity of human masticatory muscles / 实用口腔医学杂志

Objective: To investigate the effect of orthodontic and surgical treatments of skeletal crossbite on the electromyographic activity of human masticatory muscles. Methods: Electromyogram was used to test the changes of the electromyographic activity of masseter muscles, temporal anterior and diagastric anterior in 20 patients with skeletal crossbite before and after treatments. Results: Orthodontic and surgical treatments showed different effect on the activity of masseter muscle, temporal anterior and diagastric anterior. The change of the activity of the masseter muscle was the most significant among them. But, during chewing the masseter muscle was less active after treatments. Conclusion: Abnormal activity of the masticatory muscles can be partly corrected by the orthodontic and surgical treatments. The treatments cannot fully recover the function of the masseter muscle.

Treatment of mandibular prognathism using combination with orthognathic surgery and orthsdontic method / 实用口腔医学杂志

?Objective:To analyze the therapeutic characteristic of mandibular prognathism by means of orthognathic surgery and orthodontic treatment.Methods:125 patients with skeletal mandibular prognathism were treated by intraoral ramus osteotomy or mandibular body osteotomy,They also accepted different preoperative and postoperative orthodoitic treatment according to different surgery.Results: Satisfied results were obtained through combined treatment of orthognathic surgery and orthodontics.The effective rate of intraoral ramus and mandibular body osteotomy was 88.3% and 83.3% respectively .Two patints treated with mandibular body osteotomy relapsed in two years,and mandibular body osteotomy was performed again to correct the diformity.Conclusion:proper pre and postoperative orthodontic treatments are necessary in order to assure asethetics effect and ideal occlusion in new position.