Effect or aqueous solutions of sorbitol‐xylitol on plaque metabilism and on growth of Streptococcus mutans

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Abstract
Growth of S. mutans strain GS5 was inhibited by xylitol, suggesting that this is a common phenomenon in this species. Sorbitol increased the growth of S. mutans strains OMZ 176 and GS5 slightly compared to cultures with no external carbon source. Addition of small amounts of xylitol to the sorbitol cultures gave a growth below that of cultures with no extra carbon. Human dental plaque challenged with sorbitol gave a small pH drop whereas xylitol caused a negligible decrease in pH. Sorbitol-xylitol challenges gave less acid production than sorbitol challenges alone.