Dental Public Health, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
Dental Public Health, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
J Adolesc Health. 2017 Sep;61(3):378-384. doi: 10.1016/j.jadohealth.2017.03.010. Epub 2017 May 19.
Motivational interviewing (MI) is a counseling strategy to help people change their behaviors. This single-blinded randomized controlled trial evaluated the effectiveness of MI in improving adolescents' oral health.
Fifteen secondary schools were randomly assigned to three groups: (I) prevailing health education, (II) MI, and (III) MI coupled with interactive dental caries risk assessment (MI + RA). Adolescents (n = 512) with unfavorable oral health behaviors (infrequent toothbrushing and/or frequent snacking) were recruited; 161, 163, and 188 in groups I-III, respectively. Participants in the three groups received their respective interventions. At baseline and after 6 and 12 months, participants completed a questionnaire on their oral health self-efficacy and behaviors. Their oral hygiene (dental plaque score) and dental caries (number of decayed surfaces/teeth status) were recorded.
Compared with group I, subjects in groups II and III were more likely to reduce their snacking frequency (odds ratios [95% confidence intervals {CIs}]: 7.12 [1.80-28.16] and 11.17 [2.90-42.98], respectively) and increase their toothbrushing frequency (odds ratios [95% CIs]: 5.26 [2.28-12.16] and 11.45 [4.99-26.26], respectively) after 12 months. Taking group I as a reference, groups II and III had lower number of new carious teeth △D MFT (β [95% CI]: -.24 [-.44 to -.04] and -.31 [-.51 to -.11], respectively).
MI was more effective than prevailing health education strategy in eliciting positive changes in adolescents' oral health behaviors and preventing dental caries.
动机访谈（MI）是一种帮助人们改变行为的咨询策略。本单盲随机对照试验评估了 MI 改善青少年口腔健康的效果。
15 所中学被随机分为三组：（I）现行健康教育，（II）MI，和（III）MI 联合交互式龋齿风险评估（MI+RA）。招募具有不良口腔健康行为（刷牙不频繁和/或经常吃零食）的青少年（n=512）；分别有 161、163 和 188 名参与者进入组 I-III。三组参与者均接受各自的干预。在基线、6 个月和 12 个月时，参与者完成了一份关于口腔健康自我效能和行为的问卷。记录他们的口腔卫生（牙菌斑评分）和龋齿（龋失补牙面数/患龋状况）。
与组 I 相比，组 II 和组 III 的参与者更有可能减少吃零食的频率（比值比[95%置信区间{CI}]:7.12[1.80-28.16]和 11.17[2.90-42.98]），增加刷牙的频率（比值比[95%CI]:5.26[2.28-12.16]和 11.45[4.99-26.26]），12 个月后。以组 I 为参照，组 II 和组 III 的新龋牙数△DMFT 较低（β[95%CI]:-.24[-.44 至-.04]和-.31[-.51 至-.11]）。
MI 比现行健康教育策略更能有效地促使青少年口腔健康行为发生积极变化，预防龋齿。
