Daprile Giuseppe, Gatto Maria Rosaria, Checchi Luigi
Department of Periodontology, School of Dentistry, University of Bologna, Bologna, Italy.
J Periodontol. 2007 Apr;78(4):611-4. doi: 10.1902/jop.2007.060277.
Data from cross-sectional studies revealed that gingival recession commonly occurred in subjects with a good standard of oral hygiene, but very little has been reported about longitudinal changes in the presence and extent of gingival recession in a similar sample of the population. The aim of this study was to follow up on the evolution of gingival recession at buccal tooth surfaces in a student population attending the fifth year at Bologna University Dental School who had been examined in a study 5 years earlier.
The clinical examination involved assessment of the number of buccal surfaces with plaque and buccal gingival recession. Information about toothbrushing habits (brushing technique and frequency and toothbrush bristle stiffness) was collected in an interview.
The number of subjects with at least one recession and the total number of recessions had increased significantly. Comparing data from the baseline and the present study, no significant differences were observed for toothbrush type and frequency of toothbrushing, whereas the use of correct brushing techniques increased to 87% of the subjects.
The percentage of affected sites increased with the level of oral hygiene education, and this increase developed despite a reduction in the frequency of dangerous toothbrushing habits.
横断面研究数据显示，牙龈退缩常见于口腔卫生状况良好的人群，但关于类似人群样本中牙龈退缩的存在情况及程度的纵向变化，报道甚少。本研究的目的是对博洛尼亚大学牙科学院五年级学生人群颊侧牙面牙龈退缩的演变情况进行随访，这些学生在5年前的一项研究中接受过检查。
临床检查包括评估有菌斑的颊侧牙面数量和颊侧牙龈退缩情况。通过访谈收集有关刷牙习惯（刷牙方法、频率和牙刷刷毛硬度）的信息。
至少有一处牙龈退缩的受试者数量和牙龈退缩的总数显著增加。比较基线数据和本研究数据，牙刷类型和刷牙频率未观察到显著差异，而正确刷牙方法的使用比例增加到了87%的受试者。
尽管危险刷牙习惯的频率有所降低，但随着口腔卫生教育水平的提高，受影响部位的百分比仍有所增加。
