Original paper - THE EFFECT OF CHEWING A SUGAR-FREE GUM AFTER OATMEAL ON THE POSTPRANDIAL GLYCAEMIA – A CROSS-OVER STUDY - ABSTRACT
Authors: Lea Vuletic 1, Marija Klaic 2, Stjepan Spalj 3, Kristina Peros 4
1 Department of Physiology, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
2 Student of the School of Dental Medicine, University of Zagreb, Zagreb, Croatia
3 Department of Orthodontics, School of Medicine, University of Rijeka, Rijeka, Croatia
4 Department of Pharmacology, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Background and Aims: Gum chewing after a meal stimulates salivation and may affect the motility of the gastrointestinal tract and the release of hormones through neural mechanisms. This study was conducted to assess if chewing a sugar-free gum for 20 min following a meal, as recommended for dental caries prevention, influences the postprandial blood glucose levels in a period of one hour. Materials and Methods: For each of 18 participants blood glucose profile was made by measuring capillary glucose concentration in 10-min intervals within one hour following: a) chewing a sugar-free gum, b) the consumption of an oatmeal, c) chewing a sugar-free gum after the consumption of an oatmeal. Results: No statistically significant differences were found in the glycaemic response following complex carbohydrate ingestion when a gum was chewed after a meal. Conclusions: The possible influence of gum chewing on the postprandial gastrointestinal and metabolic ongoings was not reflected in the postprandial glycaemic response under the conditions of this study. A more comprehensive study which would include more variables related to vagal efferent activity, digestion and metabolism would be needed to assess if chewing sugar-free gums to exploit their caries-protective potential can influence metabolic adaptability to nutritional challenges.
Key words: dietary carbohydrate metabolism; high carbohydrate meal; mastication; postprandial glucose response; stimulated saliva; sugar-free chewing gums