Macgregor I D, Rugg-Gunn A J
Community Dent Oral Epidemiol. 1979 Oct;7(5):297-8. doi: 10.1111/j.1600-0528.1979.tb01235.x.
85 uninstructed children aged 11-13 years brushed their teeth and were unaware that they were recorded on video tape. By viewing the films, the time spent brushing in each of 16 areas of the dentition and the number of strokes used in each area were obtained. The mean overall brushing time was 60.3 s (+/- 23.8); the mean number of strokes used by each subject was 397 (+/- 224). More time was spent and more strokes employed brushing mandibular than maxillary arches, labial and buccal than occlusal areas, and occlusal than lingual areas. The percentages of time spent and number of strokes used brushing lingual areas were low.
85名11至13岁未接受过指导的儿童刷牙时并未意识到自己被录像。通过观看录像，记录了每个儿童在牙列16个区域的刷牙时间以及每个区域的刷牙次数。总体平均刷牙时间为60.3秒（±23.8）；每个受试者的平均刷牙次数为397次（±224）。刷下颌牙弓比上颌牙弓花费的时间更多、次数更多，刷唇面和颊面比咬合面花费的时间更多、次数更多，刷咬合面比舌面花费的时间更多、次数更多。刷舌面花费的时间百分比和次数百分比都很低。
