Conclusion The pain edema and trismus may be developed after extracting mandibular third molar .

结论下颌阻生第三磨牙拔除术后 均有可能 发生 张口 受限、疼痛及肿胀反应。

The 4-year local control rate was 93 3 % 2 cases recurred in the nasopharynx 8 cases developed distant metastases 3 cases developed trismus . No cases occurred perforations in hard and soft palate .

4年局部控制率为93.3%（ 28/30），远处转移8例， 张口 困难3例，无1例病人发生硬软腭穿孔。

Method According to extraction difficulty 124 cases whose impacted mandibular third molar should be removed were divided into three groups . The difference of pain edema and trismus was analysed statistically among three groups on the 2nd and 7th postoperative day respectively .

方法收集124例下颌阻生第三磨牙拔除术的病例，按手术难度分为三组，分别于术后第二日及第七日分析三者之间的疼痛、 张口 受限及肿胀差异。

Patients received combination radiotherapy had a lower trismus than those of simple radiotherapy group ( 17.5 % VS 33.8 % P < 0.05 ) .

张口 困难 发生率综合放疗组低于单纯外照射组（17.5%对33.8%，P＜0.05）。

The chief complications were : trismus ( 9 2 % ) and soft palate damage ( 5 7 % ) .

主要后遗症为 张口 困难（ 9.2%），软腭损伤（5.7%）等。

Results Because of radioactive trismus and the narrow visual field of operation the surgery on these patients was difficult .

结果 鼻咽癌 放疗 后 口腔 颌面 部多 原 发 癌患者因开口受限影响麻醉与手术视野，手术有一定难度；

Complications were : skin ulcer trismus and facial nerve paralysis due to scar contraction .

放疗并发症有皮肤溃疡， 张口 受限及瘢痕增生引起面神经瘫痪。

We present a case of pan-oral submucous fibrosis with severe trismus 17.5 mm in maximal mouth opening ( MMO ) .

本院提供一全口黏膜下纤维化并严重 张口 困难之病酬报告（张口度仅为十七点 五毫米）。