hello and welcome to hcm forum,
i would like to inform you that leaving the infected tooth untreated will results in more pain and infection, i cannot rule out the diagnosis without looking at the x-ray but yes if not treated soon it can worsen, antibiotics and anti-inflammatory medication for a week is a must before getting the teeth extracted.
also ask your husband to use an antibiotic(betadine
) mouth wash, 3-4 times/day,
kindly visit your dentist
i wish him good health.