Hansen B F, Bjertness E, Gjermo P
Department of Oral Diagnosis, Dental Faculty, University of Oslo.
J Clin Periodontol. 1990 Apr;17(4):249-54. doi: 10.1111/j.1600-051x.1990.tb00021.x.
Periodontal disease indicators were evaluated according to the periodontal treatment need system (PTNS) in random samples of 35-year-old citizens of Oslo in 1973 and 1984. The study indicated that although periodontal disease was a common finding in both samples, there was a significant reduction in score C (indicating need for complex periodontal treatment) in 1984 compared to 1973. Whereas 37.9% of the subjects showed inflamed pockets deeper than 5 mm (score C) in 1973, only 22.9% scored C in 1984 (non-Caucasians excluded). This reduction was most pronounced in females. The mean number of C-quadrants in subjects needing complex periodontal treatment was also reduced from 2.0 in 1973 to 1.7 in 1984. Further analyses of the 1984 sample showed that the mean number of C-quadrants was significantly lower in subjects with low OHI-S scores and in regular dental visitors, whereas sex, years at school, toothbrushing frequency, interdental cleaning habits, previous periodontal therapy, self-experienced need for treatment, health attitude or smoking habits, did not seem to influence the prevalence of score C.
1973年和1984年，根据牙周治疗需求系统（PTNS）对奥斯陆35岁市民的随机样本进行了牙周疾病指标评估。研究表明，尽管在两个样本中牙周疾病都很常见，但与1973年相比，1984年C类评分（表明需要进行复杂的牙周治疗）显著降低。1973年，37.9%的受试者牙周袋深度超过5毫米且有炎症（C类评分），1984年只有22.9%的受试者得C类评分（不包括非白种人）。这种降低在女性中最为明显。需要进行复杂牙周治疗的受试者中C类象限的平均数量也从1973年的2.0减少到1984年的1.7。对1984年样本的进一步分析表明，口腔卫生指数简化版（OHI-S）得分低的受试者和定期看牙者的C类象限平均数量显著较低，而性别、受教育年限、刷牙频率、牙间隙清洁习惯、既往牙周治疗、自我感觉的治疗需求、健康态度或吸烟习惯似乎并未影响C类评分的患病率。
