Evaluation and Management of Painful Gingival Swelling in Children

Etiology

Plaque‑induced gingivitis results from the host inflammatory response to dental‑plaque biofilm and is the most common periodontal condition in children. 1
In children aged 6–12 years (mixed dentition phase), the difficulty of cleaning erupting teeth creates a high risk for dental disease. 3
Periapical tissue swelling associated with primary or permanent teeth warrants intra‑oral radiographic examination using a dedicated film holder and beam‑aiming device. 2
Systematic oral examination should assess for missing teeth, tooth mobility, altered tooth position, gingival bleeding, and visible tooth fractures. 4
A vestibular mucosal fistula adjacent to a tooth apex indicates a septic pulpal lesion affecting periapical tissues. 5
Extensive gingival swelling, simultaneous mobility of multiple teeth on palpation, or tooth displacement that interferes with occlusion mandates immediate dental referral. 4

Primary viral infections such as herpes simplex or herpes zoster can present with painful oral lesions and gingival involvement. 6
Mucocutaneous disorders (e.g., lichen planus, recurrent oral ulceration) may cause painful gingival lesions. 6

Gray discoloration of a tooth, localized gingival swelling, or a parulis suggests pulpal necrosis following dental trauma. 4
Luxation injuries can produce delayed complications, including gingival swelling, weeks after the event. 4
In children younger than 5 years, gingival trauma with severe tooth injury should raise suspicion for non‑accidental injury (child abuse). 4

Pre‑pubertal patients who exhibit clear signs of periodontal disease require comprehensive medical investigation for possible systemic conditions. 5

Inspect teeth for obvious decay, mobility, excessive wear facets, and occlusal relationships. 6
Examine the oral mucosa for soft‑tissue lesions, color changes, and ulcerations. 6
Palpate the gingiva to assess tenderness, the extent of swelling, and any fluctuance. 6
If a fistula is present, obtain an intra‑oral radiograph with a gutta‑percha cone placed inside the fistula to delineate its tract. 5

Bite‑wing radiographs are the technique of choice when carious lesions are suspected. 2
Add periapical radiographs when infection involving the pulp or apex is suspected. 2
Cone‑beam computed tomography (CBCT) is not indicated in the initial diagnostic phase for gingival swelling. 2

Do not assume that all gingival swelling represents simple gingivitis; always evaluate for underlying dental pathology such as caries or periapical infection. 2
Do not order CBCT as a first‑line imaging study; intra‑oral radiographs with proper technique are sufficient for the initial assessment. 2
Do not overlook systemic disease indicators; severe periodontal disease in children may signal underlying systemic disorders that require medical work‑up. 5
Do not neglect a trauma history; delayed complications from dental trauma can manifest as gingival swelling weeks after the injury. 4