Does the remaining of some food between the teeth of a fasting person and swallowing it break the fast?

Food remnants in the teeth do not affect the fast unless the fasting person swallows them intentionally. If he swallows them intentionally, his fast is invalidated. However, if he swallows them out of forgetfulness or ignorance, his fast is not invalidated. It is recommended for a Muslim to ensure the cleanliness of his mouth and teeth.