van Palenstein Helderman W H, Lembariti B S, van der Weijden G A, van 't Hof M A
WHO Collaborating Centre for Oral Health Care Planning and Future Scenarios, Faculty of Dentistry, University of Nijmegen, The Netherlands.
J Clin Periodontol. 1998 Feb;25(2):106-11. doi: 10.1111/j.1600-051x.1998.tb02416.x.
This paper describes the prevalence and severity of gingival recession in Tanzanian adults covering the age range from 20 to 64 years. In addition, it attempts to assess the relationship between the degree of gingival recession and the presence and amount of calculus. In the 20-34 years age group recession occurred in > or = 32% of the buccal, > or = 25% of the lingual, and > or = 13% of the approximal surfaces. These %s increased to > or = 64%, > or = 52%, and > or = 48%, respectively, in the 45-64 years age group. In the 20-34 years age group, lingual surfaces of mandibular incisors and canines followed by buccal surfaces of these teeth were the sites most severely affected with gingival recession. With increasing age, all sites became gradually more severely affected, particularly the buccal and lingual surfaces of the maxillary first molar. The lingual surfaces of mandibular incisors exhibited on an average 1.3 mm, 2.4 mm and 3.2 mm recession in the 20-34 years, 35-44 years and 45-64 years age group, respectively. Most of the correlation coefficients between gingival recession and calculus at the individual tooth surface in three age groups were statistically significant. The highest correlation coefficients (0.50-0.67) were found in the youngest (20-34 years) age group at the lingual surfaces of the mandibular incisors, canine and first premolar and at the buccal surfaces of the mandibular incisors. Based on these findings, the working hypothesis is advanced that longstanding calculus is an important determinant in the onset of gingival recession at sites exhibiting pronounced recession at a young age in populations deprived of prophylactic dental care.
本文描述了坦桑尼亚20至64岁成年人牙龈退缩的患病率及严重程度。此外，还试图评估牙龈退缩程度与牙石的存在及数量之间的关系。在20 - 34岁年龄组中，颊面牙龈退缩发生率≥32%，舌面≥25%，邻面≥13%。在45 - 64岁年龄组中，这些百分比分别增至≥64%、≥52%和≥48%。在20 - 34岁年龄组中，下颌切牙和尖牙的舌面，其次是这些牙齿的颊面，是受牙龈退缩影响最严重的部位。随着年龄增长，所有部位受影响程度逐渐加重，尤其是上颌第一磨牙的颊面和舌面。下颌切牙舌面在20 - 34岁、35 - 44岁和45 - 64岁年龄组中平均退缩分别为1.3毫米、2.4毫米和3.2毫米。三个年龄组中，个体牙面牙龈退缩与牙石之间的大多数相关系数具有统计学意义。在最年轻的（20 - 34岁）年龄组中，下颌切牙、尖牙和第一前磨牙的舌面以及下颌切牙的颊面发现了最高的相关系数（0.50 - 0.67）。基于这些发现，提出了一个工作假设：在缺乏预防性口腔护理的人群中，长期存在的牙石是年轻时牙龈退缩明显部位牙龈退缩发生的一个重要决定因素。
