Markkanen H, Rajala M, Lammi S, Karinpää A, Heinonen O P
J Periodontol. 1980 Jul;51(7):408-12. doi: 10.1902/jop.1980.51.7.408.
Socioeconomic factors, detal status, health behaviour and some environmental factors were scrutinized in relation to the need for periodontal treatment. A linear multiple regression model was fitted to test which variables best explain the need of periodontal treatment. The subjects (315) of the study were employees of a paper mill in Finland. The periodontal status was classified according to a modified Periodontal Treatment Need System. The data on background variables was collected by a self-administered questionnaire. About 30% of the treatment need could be explained with the above factors. The order of the factors determining the periodontal treatment need was: number of teeth (13.3%), age (13.2%), education (0.9%), toothbrushing frequency (0.6%), and use of chewing gum (0.3%).
针对牙周治疗需求，对社会经济因素、牙菌斑状况、健康行为及一些环境因素进行了审查。拟合了线性多元回归模型，以测试哪些变量最能解释牙周治疗需求。该研究的对象（315名）为芬兰一家造纸厂的员工。牙周状况根据改良的牙周治疗需求系统进行分类。背景变量的数据通过自行填写的问卷收集。约30%的治疗需求可用上述因素解释。决定牙周治疗需求的因素顺序为：牙齿数量（13.3%）、年龄（13.2%）、教育程度（0.9%）、刷牙频率（0.6%）和口香糖使用情况（0.3%）。
