Dental Case Analysis – Large Red Gum Swelling Near Posterior Tooth

Case Overview

This intra-oral image shows a large, red, swollen lesion on the gum tissue adjacent to a posterior tooth. The appearance is consistent with an active localized gum infection, likely involving deeper periodontal tissues and possibly the underlying bone if not treated promptly.

Full Analysis and Diagnosis

Clinical Findings

• Prominent red, dome-shaped swelling on gingiva

• Inflamed, shiny soft tissue

What Is Seen in This Case

The image shows a treated tooth with sutures placed on the surrounding gum tissue. The area appears reddened and swollen, indicating recent root canal–related surgical treatment or management of an infection at the root area. The presence of sutures suggests that the infection required surgical access, drainage, or gum repair.

This is a normal appearance shortly after treatment but requires close monitoring.

What Is Seen in This Case

The image shows a blackened area on a back tooth, with swelling of the surrounding gum tissue. The dark spot on the tooth suggests advanced tooth decay, while the raised and irritated gum indicates a localized gum abscess or infection. This combination often causes bad taste or foul odor due to bacterial activity.

This condition usually develops when decay reaches deeper parts of the tooth and spreads toward the gum.

What Is Seen in This Case

The image shows red, swollen, and darkened gum tissue below the lower front teeth. The gums appear inflamed and slightly enlarged, with a darker coloration that suggests active gum irritation or early infection. The teeth themselves look mostly intact, but the gum condition indicates a problem at the gumline.

This type of issue is often noticed when the lip is pulled down and may be accompanied by tenderness or bleeding.

What Is Seen in This Case

The image shows a localized swollen and red gum area near a back tooth, clearly indicated by the arrow. The gum tissue appears raised and irritated, which strongly suggests a localized gum infection or early dental abscess. The nearby tooth shows signs of plaque buildup, which may be contributing to the infection.

This type of lesion often develops beneath the gum and may not be painful at first.

Most Likely Diagnosis

Based on visual examination, the most likely conditions include: