Müller H P, Flores-de-Jacoby L
J Clin Periodontol. 1985 Feb;12(2):113-23. doi: 10.1111/j.1600-051x.1985.tb01370.x.
The composition of subgingival plaque, from healthy and periodontally diseased regions, as well as the clinical periodontal condition of 6 patients, 17 to 24-years-old suffering from juvenile periodontitis were examined. 6 older patients with rapidly progressive periodontitis served as a control. Samples of subgingival plaque were taken from first molars and central incisors and were analysed morphologically by dark-field microscopy. In the control group in healthy regions the ratio between non-motile and motile bacteria was 27:1 and about 1:1 in deep pockets. In the juvenile periodontitis group in diseased regions, motile bacteria made up only 1/4 of the bacteria present. The results clearly show that our relatively old patients with juvenile periodontitis had a completely different microflora in their periodontally diseased regions than patients with common periodontitis. As regards our observations by dark-field microscopy, one can assume, however, that with increasing age, there might be a shift of the flora associated with juvenile periodontitis lesions from a rather simple composition to a more complex composition very similar to the flora seen in rapidly progressive adult periodontitis lesions.
对6名年龄在17至24岁患有青少年牙周炎患者的龈下菌斑组成（来自健康和牙周病区域）以及临床牙周状况进行了检查。6名患有快速进展性牙周炎的老年患者作为对照。从第一磨牙和中切牙采集龈下菌斑样本，并通过暗视野显微镜进行形态学分析。在对照组的健康区域，不活动细菌与活动细菌的比例为27:1，而在深牙周袋中约为1:1。在青少年牙周炎组的患病区域，活动细菌仅占现存细菌的四分之一。结果清楚地表明，我们这些年龄相对较大的青少年牙周炎患者在其牙周病区域的微生物群与普通牙周炎患者完全不同。然而，就我们通过暗视野显微镜的观察而言，可以假定，随着年龄的增长，与青少年牙周炎病变相关的菌群可能会从相当简单的组成转变为与快速进展性成人牙周炎病变中所见菌群非常相似的更复杂组成。
