Oral Surgery
CAN A RESORBED TOOTH BE SAVED?
Huntersville (Charlotte Metro), NC
The realistic answer on saving a tooth with internal or external resorption — and when replacement is the smarter choice
The realistic answer on saving a tooth with internal or external resorption — and when replacement is the smarter choice
Tooth resorption is a process in which the body's own cells begin dissolving the structure of a tooth from inside (internal resorption) or from outside (external resorption). Whether the tooth can be saved depends almost entirely on where the resorption is happening and how far it has already progressed by the time it is caught. A small area of internal resorption limited to the pulp chamber often responds well to root canal treatment. Extensive external resorption that has reached the root surface below the bone line frequently cannot be saved, and extraction with implant replacement becomes the sensible answer.
At Lake Norman Oral & Facial Surgery, Dr. Raymond J. Haigney II, FACS evaluates resorbed teeth referred from general dentists across the Charlotte metro and works closely with restorative dentists and endodontists to give patients an honest answer about salvageability — and when it is time to move to a different plan.
The two types behave very differently and have very different prognoses.
Internal resorption starts inside the tooth, in the pulp chamber or root canal. It is often triggered by chronic inflammation from a deep restoration, prior trauma, or an old root canal that never fully resolved. On X-rays it shows as a round or oval enlargement inside the tooth. It is usually painless until it perforates through the tooth wall — which is why it is often discovered on a routine radiograph.
Salvage odds: Good, if caught before perforation. Root canal treatment removes the resorbing cells, and the enlarged canal space is filled with biocompatible material. The tooth can typically be restored with a crown and function for many years. Once resorption has perforated the tooth wall, salvage becomes much less predictable.
External resorption starts on the outside of the root and eats inward. There are several subtypes, and they are not equally treatable:
Salvage odds: Depend on the subtype and how much root remains. External cervical resorption caught early can sometimes be treated with surgical repair. Extensive external resorption that reaches deep into the root or involves ankylosis is generally not salvageable.
Bitewing and periapical X-rays often show resorption first, sometimes years before symptoms appear. Confirmation and staging require:
An accurate diagnosis is the difference between a tooth that can be saved and a tooth that cannot — and 2D imaging alone frequently gets this wrong.
The first-line treatment for internal resorption and for external inflammatory resorption caught early. The affected tissue is removed, the canal system is disinfected, and biocompatible material is placed to arrest the process.
For accessible external cervical resorption defects, surgical exposure of the affected root surface, removal of the resorbing tissue, and restoration of the defect with bioactive material can arrest the process in favorable cases.
When resorption is extensive, when the root has been perforated in a critical location, when ankylosis has replaced significant root structure, or when the crown-to-root ratio is no longer functional, extraction is the honest recommendation. The good news: modern replacement options are excellent.
Patients often want to save the tooth at any cost. That is understandable, but there is a point where the effort and expense to save a compromised tooth outweighs the value of what is being saved. Realistic red flags that push the decision toward extraction and implant:
A well-placed single implant restores 90–100% of chewing function, preserves the surrounding bone, and typically functions for the rest of the patient's life. In many resorption cases, the honest recommendation is not to fight the tooth — it is to replace it well.
If a resorbing tooth has been found on your X-rays, or if your dentist has recommended a specialist opinion, a CBCT-based evaluation is the first step. Call Lake Norman Oral & Facial Surgery at (704) 987-3132 or request an appointment online for an honest assessment of what can be saved and what should be replaced.
Related Article: What Happens If You Leave a Broken Tooth?
Words cannot express enough, how wonderful, caring and professional Dr. Haigney and his staff are! After being rushed to the Huntersville hospital with an orbital fracture, broken nose and other facial damage, Dr. Haigney rushed me into surgery (on his day off I must add) and corrected all my problems. I only wish all doctors cared as much about their patients and their recovery as Dr. Haigney and his staff did. Thank you so much for everything! Your attention and compassion has helped me make my recovery as comfortable as possible. 5 star service!
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