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Group B: Routine operation in 48 cases as control.
组48例采用常规手术方式作对照。
youdao
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There were 31 cases in the treatment and 30 in the control group.
观察固齿增骨散治疗慢性牙周炎31例，并设对照组30例。
youdao
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One test group and control group of 40 cases.
其中观察组与对照组各40例。
youdao
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One test group and control group of 40 cases.
其中观察组与对照组各40例。
youdao