Waite I M, Furniss J S, Wong W M
Eastman Dental Hospital, London, UK.
J Clin Periodontol. 1994 Mar;21(3):155-60. doi: 10.1111/j.1600-051x.1994.tb00296.x.
There has been considerable controversy about the incidence of periodontal disease in adolescents. It is noteworthy that there is disagreement between workers as to be radiological features that should be used to detect the earliest signs of periodontitis, and variation in the choice of criteria may have influenced the results of previous studies. The present project represents a 3-year longitudinal assessment into the periodontal condition, assessed clinically and radiologically, of a group of adolescents. The radiographic investigations were carried out using vertical bitewing radiographs and, to reduce potential error caused by variation in film placement and tube alignment, individual impressions were used so that the film could be positioned accurately at repeat assessments. It was found that several of the radiographic features, such as the width of the periodontal ligament space and the angle of the interproximal bone crest relative to the tooth, similar to those previously attributed to the commencement of destructive periodontal changes, were found to be correlated with the maturation changes associated with the eruption of the adjoining permanent teeth. In spite of the use of impressions, some of the series of radiographs showed variation in tube alignment, and several of the above radiological features were also found to correlate with errors in radiographic technique. It was concluded that the various eruptive and maturation changes taking place during this stage in the adolescent dentition must be allowed for when looking for the earliest signs of periodontal destruction.
青少年牙周病的发病率一直存在很大争议。值得注意的是，研究人员对于用于检测牙周炎最早迹象的放射学特征存在分歧，标准选择的差异可能影响了以往研究的结果。本项目对一组青少年的牙周状况进行了为期3年的纵向评估，采用临床和放射学方法。放射学检查使用垂直咬合翼片，为减少因胶片放置和球管对准差异导致的潜在误差，采用了个体印模，以便在重复评估时能准确放置胶片。结果发现，一些放射学特征，如牙周膜间隙宽度和邻面牙槽嵴相对于牙齿的角度，类似于先前归因于破坏性牙周变化开始的特征，被发现与相邻恒牙萌出相关的成熟变化有关。尽管使用了印模，但一些系列的放射片仍显示球管对准存在差异，上述一些放射学特征也被发现与放射学技术误差相关。得出的结论是，在寻找牙周破坏的最早迹象时，必须考虑青少年牙列在此阶段发生的各种萌出和成熟变化。
