刷牙时间对青少年正畸患者口腔健康状况的影响及其临床意义

Influence of different brushing time in oral hygiene in adolescent orthodontic patients and their clinical significances

目的:统计青少年正畸患者的刷牙时长,检测不同刷牙时长下各项口腔健康指数的变化,探讨正畸患者最适刷牙时长,为正畸医师临床口腔卫生宣教提供依据。方法:共纳入123例青少年正畸患者,通过统计《正畸矫治期间刷牙时间记录回执》的数据,将患者刷牙时长分为1~3min、3~5min、5~7min和7~10min4组,选取龈沟出血指数(SBI)、牙菌斑指数(PLI)、软垢指数(DI-S)和釉质脱矿指数(EDI)评价正畸患者1、3和6个月后不同刷牙时长对各项口腔健康指数的影响。结果:在1、3和6个月时,与1~3min和3~5min组比较,刷牙时长5~7min组患者SBI、PLI和DI-S明显降低(P<0.05);在1、3和6个月,刷牙时长5~7min组与7~10min组患者SBI、PLI、DI-S和EDI比较差异无统计学意义(P>0.05)。结论:刷牙时长5min以上可以有效改善正畸患者的口腔卫生状况,以5~7min为最佳刷牙时长,临床中应该建议青少年正畸患者刷牙时长在5min以上。

Objective：To study the changes of oral health indexes in adolescent orthodontic patients under different brushing time,and to provide basis for the orthodontists to give effective dental health promotion in clinic.Methods：A total of 123 adolescent orthodontic patients were included,and they were divided into 1-3min,3-5min,5-7min and 7-10 min groups based on the brushing time recorded in the period of orthodontic treatment.The relationship between different brushing time and oral health indexes was evaluated 1,3,and 6 months after experiment,such as sulcus bleeding index（SBI）,plaque index（PLI）,debris index-simplified（DI-S）and enamel demineralization index（EDI）.Results：Compared with 1-3min and 3-5min groups,the SBI,PLI,and DI-S of the patients in 5-7min group were significantly reduced（P〈0.05）.There was no significant differences of SBI,PLI,DI-S,and EDI between 5-7min group and 7-10 min group（P〉0.05）.Conclusion：Brushing teeth more than 5min can improve the oral hygiene significantly and the best time is 5-7min;the orthodontists should require the patients to brush teeth at least for 5 min.