Ruling on anaesthetic injections and cleaning, filling or extraction of teeth whilst fasting
If a person has pain in his tooth, then a Dentist cleans, fills or removes it, does it affect his fasting? Does an anesthetic injection invalidate fasting?.
Praise be to Allaah.
The things mentioned in the question do not have any effect
on the validity of the fast, rather they are forgiven, but he should be
careful to avoid swallowing any medicine or blood. Similarly the injection
mentioned does not have any effect on the validity of the fast, because it
is not like food or drink, and the basic principle is that the fast remains
valid. End quote.
Shaykh ‘Abd al-‘Azeez ibn Baaz (may Allaah have mercy on
him)
Majmoo’ Fataawa wa Maqaalaat Mutanawwi’iah (15/259).