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例1 宋某,男,29岁。右上下磨牙,阵发性钝痛检查右上下颌牙齿无龋,牙龈正常。X线检查,右上
Example 1 Song, male, 29 years old. Right upper and lower molars, paroxysmal dull pain check the right upper and lower jaw teeth caries, gums normal. X-ray examination, upper right