Gastric emptying rate in subjects with malocclusion examined by [¹³C] breath test

Abstract

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.

Lop-eared rabbits have more aural and dental problems than erect-eared rabbits: a rescue population study

“…Rabbit dental pathology can lead to lesions of the mouth, pain, difficulty chewing food e.g. avoidance of, or prolonged chewing of, hard foods as seen in bears with dental pathology 42 , and possibly gastrointestinal problems following inadequately chewed food as found in humans 43, 44 , among other issues described earlier. The rescue staff caring for rabbits in the current study were more knowledgeable of and attentive to rabbit health issues than many owners, and health records indicated that they had already identified more dental issues requiring veterinary attention in lop-eared than erect-eared rabbits, before our study started.…”

Skeletal Malocclusion: A Developmental Disorder With a Life-Long Morbidity

“…A study conducted on 11 normal occlusion females and 11 malocclusion females noticed a significant relationship between malocclusion and gastric emptying function. This could be due to increased functional burden on stomach due to inferior activity of masticatory muscles in the malocclusion patients [57] causing inadequate mastication of food in the oral cavity.…”

Correlation between the median particle size of chewed frankfurter sausage and almonds during masticatory performance test

“…Since then, the effect of chewing on the function of the digestive system has been widely studied but the association was still inconclusive. [2][3][4][5][6][7][8] This may be related to the variations of subjects, test foods and gastric function test methods. The study of a direct association between masticatory performance and gastric function might help to reconcile the previous findings.…”