Division of Comprehensive Prosthodontics, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan.
Department of Medical Informatics, Niigata University Medical and Dental Hospital, Japan.
J Dent Res. 2023 Jan;102(1):21-27. doi: 10.1177/00220345221118013. Epub 2022 Sep 9.
Because a relationship has been reported between masticatory behavior, obesity, and postprandial blood glucose, it is recommended to chew well and take a longer time to eat. The purpose of this study was to examine the possibility of changing masticatory behavior using a small ear-hung wearable chewing counter, which can monitor masticatory behavior without disturbing daily meals. In total, 235 healthy volunteers participated in a 4-wk randomized controlled trial and were divided into 3 groups. All participants were instructed about the importance of mastication at the first visit. During the intervention, group B used the chewing counter without an algorithm during each meal (notification of the number of chews after meal), and group C used the chewing counter with a masticatory behavior change algorithm (setting a target value and displaying the number of chews in real time). Group A was set as the control group. The number of chews and the meal time when consuming 1 rice ball (100 g) were measured before and after the intervention using the chewing counter, and the rate of change in these values was evaluated. Participants also provided a subjective evaluation of their changes in masticatory behavior. The number of chews and the meal time of 1 rice ball increased significantly in groups B and C compared with before the intervention, and the rate of change was significantly higher in group C than in group A and group B. In addition, the subjective evaluation of the change in the number of chews was highest in group C. Self-monitoring of masticatory behavior by providing a target value and the degree of achievement for the number of chews using a wearable chewing counter with a behavioral change algorithm could promote effective change in masticatory behavior and lead to an increased number of chews. (Trial ID: UMIN000034476).
由于咀嚼行为、肥胖和餐后血糖之间存在关联，因此建议充分咀嚼，延长用餐时间。本研究旨在通过使用小型耳挂式咀嚼计数器来改变咀嚼行为的可能性，该计数器可以在不干扰日常用餐的情况下监测咀嚼行为。共有 235 名健康志愿者参与了为期 4 周的随机对照试验，并分为 3 组。所有参与者在首次就诊时都被告知了咀嚼的重要性。在干预期间，B 组在每餐时使用咀嚼计数器但没有算法（用餐后提示咀嚼次数），C 组使用具有咀嚼行为改变算法的咀嚼计数器（设定目标值并实时显示咀嚼次数）。A 组为对照组。使用咀嚼计数器测量干预前后食用 1 个（100g）米饭球时的咀嚼次数和用餐时间，并评估这些值的变化率。参与者还对自己咀嚼行为的变化进行了主观评价。与干预前相比，B 组和 C 组的咀嚼次数和食用 1 个米饭球的用餐时间均显著增加，C 组的变化率明显高于 A 组和 B 组。此外，C 组对咀嚼次数变化的主观评价最高。通过提供目标值和使用具有行为改变算法的可穿戴咀嚼计数器来实时显示咀嚼次数的完成程度，自我监测咀嚼行为可以促进咀嚼行为的有效改变，并增加咀嚼次数。（试验 ID：UMIN000034476）。
