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Referral and warning signs
When to refer
Refer ALL cases of suspected periodontal abscess to dental personnel (HC4+) for drainage and definitive periodontal management.
Red flags
- Signs of spreading infection (facial swelling, fever, systemic illness).
- Rapidly increasing swelling.
- Associated significant tooth mobility.
Signs and symptoms
- Localized, smooth, shiny swelling on the gingiva (gum) adjacent to a tooth.
- Pain (often dull, localized, may become severe).
- Tenderness of the gum swelling to touch.
- Tooth may be tender to lateral percussion or chewing.
- Tooth may feel slightly 'high'.
- Pus discharge from the gingival margin or through a fistula on the gum (spontaneous or on pressure).
- Associated deep periodontal pocket.
- Tooth involved is usually VITAL (unlike periapical abscess).
- Increased tooth mobility may be present.
- Regional lymphadenopathy may occur.
Risk factors
- Pre-existing moderate to severe periodontitis (deep pockets).
- Blockage of a deep periodontal pocket opening (e.g., by food debris, calculus).
- Incomplete scaling and root planing (leaving deep calculus).
- Systemic antibiotics given for unrelated condition without periodontal treatment.
- Diabetes mellitus.
- Impacted foreign body in pocket (e.g., fishbone, popcorn husk).
Diagnosis
Clinical assessment
Based on localized gingival swelling associated with a periodontal pocket adjacent to a usually vital tooth. Probing reveals deep pocket often draining pus.
Differential diagnosis
- Periapical Abscess (associated with non-vital tooth, swelling often near root apex, pain often more severe/throbbing, may have apical radiolucency).
- Gingival Abscess (localized to marginal gingiva, not involving deeper pocket).
- Combined Periodontic-Endodontic Lesion.
- Vertical Root Fracture.
- Osteomyelitis.
Investigations
- Dental examination including periodontal probing.
- Pulp vitality testing (tooth usually vital).
- Dental X-rays (Periapical): May show associated bone loss from periodontitis, but often no specific apical change related to the abscess itself (unlike periapical abscess).
Diagnostic criteria
Localized gingival swelling + Associated deep periodontal pocket + Pus drainage (spontaneous or on probing) +/- Radiographic evidence of periodontal bone loss, typically associated with a vital tooth.
Management
Non-pharmacological management
- Drainage (Essential):
- - Drainage through the periodontal pocket opening (using probe/scaler to gently open entrance).
- - OR Incision and drainage (I&D) of the fluctuant swelling under local anaesthesia. (LOC: HC4+)
- Subgingival Debridement: Scaling and root planing (SRP) of the affected tooth/pocket area after acute symptoms subside. (LOC: HC4+)
Pharmacological treatment
- Pain Relief: Paracetamol, NSAIDs (Ibuprofen, Diclofenac). (LOC: HC2+)
- Antiseptic Mouth Rinses: Chlorhexidine 0.12%/0.2% or Warm Salt Water rinses after drainage.
- Systemic Antibiotics: Often indicated due to localized spread within tissues. Cover periodontal pathogens.
- - Amoxicillin 500mg PO Q8H (Child: 25mg/kg Q8H) PLUS Metronidazole 400mg PO Q8H (Child: 10-12.5mg/kg Q8H) for 5-7 days. (LOC: HC4)
Monitoring
Follow up within 24-48 hours to ensure drainage and symptom improvement. Follow up for definitive periodontal treatment (SRP).
Complications
- Rapid periodontal attachment and bone loss.
- Tooth loss.
- Spread of infection (rarely).
Prevention
- Effective treatment and maintenance of periodontitis.
- Thorough scaling and root planing.
- Good oral hygiene.
Patient education
- Explanation of abscess related to gum disease (periodontitis).
- Need for drainage and antibiotics.
- Importance of definitive periodontal treatment (deep cleaning) to prevent recurrence.
- Reinforcement of oral hygiene.
- Management of underlying periodontitis.
Uganda-specific notes
Often related to underlying chronic periodontitis. Drainage and antibiotics are primary management. Referral for scaling/root planing crucial but access limited.
References
- Uganda Clinical Guidelines (UCG) 2023
Chapter 23, Section 23.2.8