Fibrous Scar

Fibrous Scar

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What Are We Talking About?

It’s a common scenario, isn’t it, doctor? A patient comes in after an extraction or a surgical procedure you performed a while back. You take a follow-up X-ray, and you notice that the wound site isn’t entirely filled with bone—not a hundred percent, anyway. There’s this little black area on the radiograph, and your first thought is, “What’s this? Did the wound not heal properly? Or is there a new problem emerging?”

Well, this is precisely where our star for today’s discussion steps in: the Fibrous Scar. In a nutshell, it’s a perfectly normal form of healing, but it has a very distinct appearance on radiographs that we absolutely need to be familiar with.

What Exactly is a Fibrous Scar?

Simply put, doctor, a fibrous scar is an area where fibrous tissue has formed instead of bone after an extraction or any other surgical intervention. Rather than completely filling that space with bone, the body has opted to seal it with fibrous tissue. In many situations, this is actually considered a completely natural healing process.

Radiographic Features: How to Spot It

To catch it quickly and avoid any confusion, just keep these specific characteristics in mind:

Location

You can usually find it in any area that previously underwent a surgical procedure or an extraction. Sometimes, we even see them at the apex of teeth that have had root canal treatment, especially if there was an infection or inflammation before the treatment. In these cases, the body sealed the area with fibrous tissue instead of bone.

Edge

Its borders are typically well-defined. It also has a very unique appearance that we refer to as a “rolled appearance.”

Shape

The shape of a fibrous scar is usually round to ovoid.

Internal Structure

Internally, it appears dark on an X-ray, meaning it’s radiolucent.

Number

Most often, you’ll encounter a single fibrous scar, though occasionally, there might be multiple ones.

Key Points You Should Know

  • A fibrous scar represents a natural form of healing in certain situations; it’s not always indicative of a problem.

  • They tend to occur more frequently in the maxilla (upper jaw) compared to the mandible (lower jaw).

  • Typically, they are completely asymptomatic and remain stable in both size and shape over time.

Clinical Significance: Why Does It Matter?

Okay, if it’s a natural occurrence, what’s its actual relevance to our clinical practice?

  • Most of the time, it doesn’t require any treatment whatsoever.

  • Its primary importance lies in your ability to differentiate it from other pathological lesions that might present with a similar radiographic appearance.

  • It could potentially complicate matters slightly if you’re planning an implant placement or any other surgical procedure in that specific region.

  • That’s why we always recommend regular monitoring to ensure it remains stable and doesn’t undergo any changes.

A Final Note, Doctor

The most crucial key to a correct diagnosis here is the patient’s history. You absolutely must ask the patient and find out if they’ve had any previous surgeries or extractions in that area. If you can connect the radiographic appearance with the patient’s history, the diagnosis becomes quite straightforward. However, if you notice that the lesion is changing over time, or if the patient starts experiencing symptoms, then more in-depth examinations are definitely warranted to rule out any underlying pathology.

Share this topic with your colleagues and anyone you think could benefit.

Interested in learning more? Check out the references!

  1. Neville, B.W., Damm, D.D., Allen, C.M., & Chi, A.C. (2015). Oral and Maxillofacial Pathology (4th ed.). Elsevier.

  2. White, S.C., & Pharoah, M.J. (2014). Oral Radiology: Principles and Interpretation (7th ed.). Mosby Elsevier.

  3. Gutmann, J.L. & Lovdahl, P.E. (2011). Problem Solving in Endodontics (5th ed.). Elsevier Mosby.

  4. Molven, O., Halse, A., & Grung, B. (1996). Incomplete healing (scar tissue) after periapical surgery–radiographic findings 8 to 12 years after treatment. Journal of Endodontics.

  5. Nair, P. N. R. (2004). Pathogenesis of apical periodontitis and the causes of endodontic failures. Critical Reviews in Oral Biology & Medicine.

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