maxillary retrusion

例句：

1. 1. The patient's maxillary retrusion was causing him discomfort.
   患者的上颌后退使他感到不适。
2. 2.The dentist advised the patient to maintain good oral hygiene to prevent maxillary retrusion.
   牙医建议患者保持良好的口腔卫生以防止上颌后退。
3. 3.During the surgery, the surgeon carefully controlled the patient's maxillary retrusion to avoid damaging the surrounding tissues.
   手术中，外科医生小心地控制患者的上颌后退以避免损伤周围的组织。