Petersen P E
Community Dent Oral Epidemiol. 1983 Dec;11(6):337-41. doi: 10.1111/j.1600-0528.1983.tb01388.x.
All workers (n = 59) at a Danish chocolate factory were given a questionnaire in order to study dental health behavior and self-assessment of dental health. Regular dental visits at least once a year was reported by 71% of the respondents. Toothbrushing at least twice a day was claimed by most of the workers, but only a few reported to brush their teeth daily at work. One fourth declared that they often consumed chocolate at their working place. Good dental and gingival conditions were only reported by 25% and in correspondence with this, nearly one third claimed to have had much or a great deal of trouble with their teeth. Mean DMFS increased from 22.7 in the age group 16-19 yr to 106.7 among persons 40 yr of age or more. In the age group 20-39 yr half of the teeth present had gingivitis and calculus and among the older individuals half of the teeth had gingivitis and pockets deeper than 5 mm. Chocolate workers were considered a high risk group.
丹麦一家巧克力工厂的所有工人（n = 59）都收到了一份问卷，以研究牙齿健康行为和牙齿健康的自我评估。71%的受访者报告称每年至少定期看一次牙医。大多数工人声称每天至少刷牙两次，但只有少数人报告在工作时每天刷牙。四分之一的人表示他们经常在工作场所吃巧克力。只有25%的人报告牙齿和牙龈状况良好，与此相对应的是，近三分之一的人声称牙齿有很多问题。平均龋失补牙面数（DMFS）从16 - 19岁年龄组的22.7增加到40岁及以上人群的106.7。在20 - 39岁年龄组中，一半的牙齿有牙龈炎和牙结石，而在年龄较大的人群中，一半的牙齿有牙龈炎且牙周袋深度超过5毫米。巧克力工厂工人被视为高危人群。
