Paeds · ent-hearing-and-oral-health
Facial swelling and odontogenic infection
Also known as Dental abscess · Periapical abscess · Odontogenic cellulitis · Ludwig angina · Facial cellulitis of dental origin
Fellowship guide to paediatric facial swelling of dental origin, from a localised periapical abscess through spreading odontogenic cellulitis to Ludwig angina and deep neck space infection: the principle that every spreading odontogenic infection has a source tooth that must be drained or extracted, because antibiotics alone fail without source control; the polymicrobial anaerobic microbiology and the empirical intravenous regimens (ampicillin-sulbactam, clindamycin with metronidazole, ceftriaxone plus metronidazole); the fascial-plane anatomy (buccinator, mylohyoid, submandibular and sublingual spaces) that determines whether pus tracks into the cheek, the floor of mouth or the neck; and the airway-threat red flags of Ludwig angina — bilateral submandibular swelling, woody floor of mouth induration, tongue elevation, drooling and trismus — that make securing the airway the first and most important step.
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Red flags
- Bilateral submandibular swelling with a woody, indurated floor of mouth, a raised or displaced tongue, drooling, trismus and a muffled voice is Ludwig angina — the airway is the immediate threat; keep the child sitting upright and forward, summon anaesthetics, ENT and oral-maxillofacial surgery, and do not force oropharyngeal examination or lay the child flat
- Rapidly progressive facial swelling with systemic toxicity, stridor, inability to swallow secretions, or any sign of airway compromise is a critical emergency — secure the airway with expert help before imaging or instrumentation
- Odontogenic infection tracking into the cavernous sinus (via the valveless ophthalmic and pterygoid venous plexus) produces cranial nerve palsies, proptosis, chemosis, headache and systemic sepsis — suspect septic cavernous sinus thrombosis and escalate immediately
- A child with a facial swelling whose source tooth is not identified, or who fails to improve on antibiotics alone, has an undrained collection — repeat the dental and imaging assessment and arrange surgical drainage; antibiotics without source control will not resolve an established abscess
- Descending necrotising mediastinitis presents as chest pain, septic shock and mediastinal air or fluid after a deep neck infection — it carries a high mortality and demands immediate surgical drainage of neck and mediastinum in theatre
Life stages
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Clinical exam formats
Board mappings
- General and Community Paediatrics
- Acute and infectious illness
- Common ear, nose and throat and oral health presentations
- Current 2026 PREP curriculum — Learning goal 6: Acute and critical care
- Renewed curriculum from 2027 — Learning goal 5: Clinical assessment
- Antimicrobial stewardship and the surgical principle of source control
- Clinical Applications
- Acute paediatrics and the compromised airway
- Short Cases
- Acute assessment scenarios
- Airway and deep neck infection scenarios
- 4. Professional skills and knowledge: Patient management
- 6. Acute and emergency care
- General Paediatrics: Recognises and manages facial swelling and the compromised airway
- Foundation of Practice (FOP)
- Applied Knowledge in Practice (AKP)
- Common ENT, oral health and infection presentations
- Clinical
- History and management planning
- Acute assessment and airway safety-netting
- General Pediatrics Content Outline — Domain 2: Emergency Medicine
- General Pediatrics Content Outline — Domain 5: Infectious Diseases
- General Pediatrics EPA: Recognise and stabilise the compromised airway
- Patient Care 1: History and Physical Examination
- Patient Care 4: Clinical Reasoning
- Patient Care 5: Emergency and acute care
- Medical Knowledge 1: Clinical Knowledge
- Systems-Based Practice: antibiotic stewardship and source control
- Medical Expert
- Communicator
- Collaborator
- Scholar
- Pediatrics: Core EPA — Recognise and stabilise deep neck and airway-threatening infection
Overview & Definition
Picture the five-year-old who arrives with a swollen cheek, a low fever and a two-day history of toothache that the family put down to sweets. The swelling is firm, warm and tender, and the child holds the jaw stiff. The fellowship task is to recognise this as an odontogenic infection — an infection that began in a tooth — and to judge how far it has spread, because the difference between a dental abscess that needs a day-case extraction and Ludwig angina that needs an emergency airway is a clinical judgement you make at the bedside. [1] [6]
An odontogenic infection is one that arises from the teeth or their supporting structures — most often as the end result of untreated dental caries, but occasionally from periodontal disease or dental trauma. The chain runs from enamel caries through dentine to the dental pulp, where it causes irreversible pulpitis; once the pulp necroses, infection escapes through the root apex into the periapical tissues to form a periapical abscess, and from there it can erode the cortical bone and track through the fascial planes of the face and neck. [1] [4]
What lifts this topic to fellowship level is the principle of source control and the anatomy of fascial spread. An abscess is a collection of pus under pressure, and antibiotics cannot sterilise a closed space — the offending tooth must be extracted or undergo endodontic treatment and the pus drained. Where the pus tracks is determined by the muscle attachments of the jaw, which dictates whether the child develops a cheek swelling, a floor-of-mouth infection, or Ludwig angina with its threat to the airway. Recognising the source, draining the collection, and protecting the airway are the three skills that earn marks and save lives. [2] [4]
References10ShowHide
- [1]Teal L, Sheller B, Susarla HK. Pediatric Odontogenic Infections. Oral Maxillofac Surg Clin North Am, 2024.PMID 38777729
- [2]Bridwell R, Gottlieb M, Koyfman A, Long B. Diagnosis and management of Ludwig's angina: An evidence-based review. Am J Emerg Med, 2021.PMID 33383265
- [3]Perina V, Szaraz D, Harazim H, et al. Paediatric Deep Neck Infection—The Risk of Needing Intensive Care. Children (Basel), 2022.PMID 35883963
- [4]Bertossi D, Barone A, Iurlaro A, et al. Odontogenic Orofacial Infections. J Craniofac Surg, 2017.PMID 27930461
- [5]Caruso SR, Yamaguchi E, Portnof JE. Update on antimicrobial therapy in management of acute odontogenic infection in oral and maxillofacial surgery. Oral Maxillofac Surg Clin North Am, 2022.PMID 34728145
- [6]Giunta Crescente C, Soto de Facchin M, Acevedo Rodriguez AM. Medical-dental considerations in the care of children with facial cellulitis of odontogenic origin. A disease of interest for pediatricians and pediatric dentists. Arch Argent Pediatr, 2018.PMID 30016031
- [7]Caranfa JT, Yoon MK. Septic cavernous sinus thrombosis: A review. Surv Ophthalmol, 2021.PMID 33831391
- [8]Monse B, Heinrich-Weltzien R, Benzian H, Holmgren C, van Palenstein Helderman W. PUFA—an index of clinical consequences of untreated dental caries. Community Dent Oral Epidemiol, 2010.PMID 20002630
- [9]Tami A, Othman S, Sudhakar A, et al. Ludwig's angina and steroid use: A narrative review. Am J Otolaryngol, 2020.PMID 32035654
- [10]Ahmadi H, Ebrahimi A, Ahmadi F. Antibiotic therapy in dentistry. Int J Dent, 2021.PMID 33574843