Key points are not available for this paper at this time.
(1961)。亚龈刮治与控制口腔卫生对牙龈炎发生率的联合影响。《斯堪的纳维亚齿科学会期刊》:第19卷,第3-4期,537-555页。
Lövdal 等人(1961)研究了这个问题。
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