If you live in Sacramento, California, and have noticed occasional swelling around a tooth, gum, jaw, or face, it is important not to ignore it. Many patients mistakenly believe that swelling that comes and goes is harmless. Unfortunately, intermittent swelling is often one of the earliest warning signs that an infection is developing beneath the surface.

As a dentist who has treated thousands of patients with dental infections, root canal problems, gum disease, and dental abscesses, I frequently hear the same statement:

A tooth infection is never something to ignore. As a dentist who has treated thousands of patients over the past two decades, I have seen what happens when a small cavity or untreated toothache turns into a serious infection. One of the most dangerous situations occurs when a dental infection spreads beyond the tooth and enters the facial spaces of the head and neck.

As a dentist with decades of experience treating root canal infections, one of the most common concerns I hear from patients in Los Angeles is:

"Doctor, why do I have a bad taste in my mouth after my root canal?"

A bad taste can be alarming. Some patients immediately worry that their root canal has failed. Others fear that an infection has returned. While a temporary unpleasant taste can sometimes be harmless and short-lived, it can also signal a more serious dental problem requiring immediate attention.

One of the most alarming situations for patients is waking up after a root canal treatment and noticing swelling in the face. Whether the swelling is mild around the cheek or severe enough to affect speaking, eating, or opening the mouth, many patients immediately wonder if something has gone wrong.

As a dentist who has treated complex root canal infections and dental emergencies for many years in the United States, I can tell you that facial swelling after a root canal can range from a normal healing response to a serious infection requiring immediate attention.