问题
单项选择题
患者，女性，30岁，拔除右上第一磨牙残根时，根不慎进入上颌窦，最佳处理方法是
A．经牙槽窝探查
B．填塞明胶海绵
C．行上颌窦开窗术
D．扩大牙槽窝底
E．不处理
答案
参考答案：D
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患者，女性，30岁，拔除右上第一磨牙残根时，根不慎进入上颌窦，最佳处理方法是
A．经牙槽窝探查
B．填塞明胶海绵
C．行上颌窦开窗术
D．扩大牙槽窝底
E．不处理
参考答案：D
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| Vince has a good friend Hector. Last Friday was Hector's birthday. It was five o'clock in the afternoon. Hector's brother said, "The birthday party is beginning." At that time, Vince appeared (出现). He wore (穿着) a big T-shirt, On it were the words "My best friend, Hector: Happy Birthday!" Hector was very excited. On the day, besides (除了……还有) Vince, Hector's other two classmates Alice and Lily joined in the party. Hector's parents cooked delicious food for them in their house. Hector got a lot of presents: a soccer ball from his brother, a bicycle from his parents, a CD from Alice, a cartoon book from Lily and a dictionary from Vince. They danced and sang till 9 o'clock in the evening. They were very happy.
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