患者,男,58岁。戴用全口义齿1周,主诉咀嚼费力,戴用时间较长后面部酸痛。检查:义齿固位好,基托边缘伸展适度,咬合关系正常,说话时有义齿撞击声,该患者义齿存在的问题是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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