Orthodontic Science, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan.
J Oral Rehabil. 2013 Aug;40(8):574-81. doi: 10.1111/joor.12073. Epub 2013 May 15.
Masticatory function is significantly lower in individuals with malocclusion than in those with normal occlusion. Although several studies suggest that masticatory function influences gastrointestinal digestive function, the relationship between malocclusion and gastrointestinal symptoms has not been studied extensively. We hypothesised that insufficient masticatory function would increase the functional burden of the stomach and have some influence on the gastrointestinal system. The purpose of this study was to investigate masticatory function and gastric emptying rate in subjects with malocclusion. Eleven healthy dentate female volunteers and eleven female patients with maloc-clusion underwent a (13) C-acetate breath test with a liquid meal. Maximum (13) CO2 exhalation time (Tmax ) was compared statistically between both groups. Masticatory function was assessed by colour-changeable chewing gum. In addition, the frequency scale for the symptoms of gastroeso-phageal reflux disease (FSSG) and questionnaires on food intake were given to both groups. The mean Tmax of the malocclusion group was significantly longer than that of the normal occlusion group (P = 0·007). Masticatory performance, measured by colour-changeable gum and questionnaires, was significantly lower in the malocclusion group than in the normal occlusion group (P = 0·023, P = 0·003). There was no significant difference in the FSSG results between the two groups (P = 0·262). This study suggested that there was a correlation between malocclusion and gastric emptying function in women.
咀嚼功能在错颌畸形患者中明显低于正常咬合者。尽管有几项研究表明咀嚼功能会影响胃肠道消化功能，但错颌与胃肠道症状之间的关系尚未得到广泛研究。我们假设咀嚼功能不足会增加胃的功能负担，并对胃肠道系统产生一些影响。本研究旨在调查错颌患者的咀嚼功能和胃排空率。11 名健康无牙女性志愿者和 11 名错颌女性患者接受了液体餐的（13）C-乙酸呼气试验。两组间比较最大（13）CO2呼气时间（Tmax）。咀嚼功能通过变色口香糖进行评估。此外，两组均接受了胃食管反流病症状频率量表（FSSG）和饮食摄入问卷。错颌组的平均 Tmax 明显长于正常咬合组（P=0.007）。通过变色口香糖和问卷测量，错颌组的咀嚼性能明显低于正常咬合组（P=0.023，P=0.003）。两组 FSSG 结果无显著性差异（P=0.262）。本研究表明，女性错颌与胃排空功能之间存在相关性。
