20/04/2026
🚨 TOOTH PAIN THAT KEEPS PATIENTS AWAKE AT NIGHT? THINK AGAIN.
A patient walks in with:
Severe throbbing pain
Tooth feels “high” on biting
Extreme tenderness to percussion
Most students jump to periodontal causes…
❌ But here’s the catch — the tooth is NON-VITAL
👉 This is a classic Periapical Abscess
🧠 HIGH-YIELD SNAPSHOT (INBDE GOLD)
🔴 Etiology
Untreated caries / trauma → Pulp necrosis
⚫ Key Diagnostic Clue
Non-vital tooth (MOST IMPORTANT)
🟡 Clinical Features
Severe pain
Tender on percussion
Swelling ± sinus tract
Tooth feels “extruded”
🔵 Radiograph
Early → Normal
Late → Periapical radiolucency
🟣 Treatment
RCT / Extraction + Drainage
🚫 Antibiotics NOT routine
✅ Only if fever / cellulitis / systemic spread
⚠️ EXAM TRAP YOU MUST REMEMBER
👉 Periapical abscess = NON-VITAL tooth
👉 Periodontal abscess = VITAL tooth (usually)
💥 This single line can save you marks.
❓ MCQ
A 32-year-old patient presents with severe pain in a mandibular molar. The tooth is highly tender to percussion and feels elevated during occlusion. Clinical examination shows localized swelling near the apex. Pulp vitality test reveals no response.
What is the most appropriate management?
A. Scaling and root planing
B. Antibiotic therapy alone
C. Root canal treatment with drainage
D. Occlusal adjustment only
Post your answers in comment 👇