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作者以ＰｌａｑｕｅＩｎｄｅｘ（ＰＩ）检查和剖析了１０５名（男５４名，女５１名）ＨｅｌｌｍａｎⅡＡ期幼儿的菌斑附着，结果显示男女间无显著差异。统计表明全口ＰＩ中，下领多于上领，乳磨牙多于乳前牙；上领之ＰＩ以颊面最多，下颌则以舌面为多；Ｐｌ在牙面间有显著差异；同名牙相比，下颌之ＰＩ多于上颌。分析结果可供指导幼儿刷牙时作一参考。
The authors examined and analyzed the plaque attachment of 105 HellmanⅡA children (54 males and 51 females) with PlaqueIndex (PI). The results showed no significant differences between men and women. Statistics show that the whole mouth PI, the collar under the collar collar, molars more than the anterior teeth; collar collar PI to the most buccal, mandibular tongue surface is more; Pl between the tooth surface were significantly different; Compared to the lower jaw PI more than the upper jaw. Analysis results can be used as a guide when children brush their teeth for a reference.