The function of the glottis is to make several voicing sounds between the vocal folds when they vibrate. Voiceless consonants include the English h, f, s, p, t and k sounds. The glottis functions... The function of the glottis is to make several voicing sounds between the vocal folds when they vibrate. Voiceless consonants include the English h, f, s, p, t and k sounds.
Misophonia sufferers find these sounds more than just mildly annoying. Beginning in late childhood or early adolescence, the condition causes extreme anger, anxiety and terror when a trigger sound, such as chewing gum, is heard.
Specifically ask him if doing so can cause gum recession. Baking soda is very abrasive and definitely has the ability to erode your gum line (gum recession) as does brushing too hard in general, even without baking soda. I asked my own periodontist about this and he said he could definitely see how baking soda could cause gum erosion due to its abrasive property.