Mouth Ulcers (Oral Ulcers) in Pediatrics - Treatment Guide

Common Causes in Children

1. Recurrent Aphthous Stomatitis (RAS) - Most Common

Types

• Minor aphthae (80% of cases): 3-10 mm, 1-5 ulcers per outbreak, heals in 7-10 days without scarring
• Major aphthae: >1 cm, heals in 2-6 weeks, may scar
• Herpetiform aphthae: multiple tiny (<2 mm) ulcers coalescing

Treatment - Stepwise Approach (AAPD Guidelines)

• Liquid antacid (e.g., Mylanta): applied directly to ulcer or as mouth wash, 4x/day after meals. Age 1-6 years: apply drops; Age >6 years: 1 tsp as mouth rinse
• Topical anesthetics: Benzocaine 20% bioadhesive paste (e.g., Orabase) for pain relief; Lidocaine 5% cream or 10% spray (temporary effect)
• Chlorhexidine 0.2% mouth rinse: antiviral and antibacterial; reduces pain and ulcer duration
• Topical corticosteroids (first-line anti-inflammatory): betamethasone or fluticasone spray/mouth rinse; triamcinolone in Orabase paste - use with antifungal if prolonged to prevent oral candidiasis
• Diclofenac 3% + hyaluronic acid 2.5%: effective anti-inflammatory topical option
• Topical antibiotics (doxycycline/minocycline rinses): reduce severity; avoid tetracyclines in children <12 years (tooth staining risk)

• Oral prednisone: first-line systemic agent
• Montelukast: alternative systemic option
• Colchicine, Dapsone: immunomodulators for complex/severe recurrent aphthosis
• Nutritional supplements: check and correct iron, folate, vitamin B12 deficiency - treat the deficiency if found
• Thalidomide: reserved for very severe refractory cases (not routinely used in children)

• Acetaminophen or ibuprofen for pain
• Cold/soft diet: cold drinks, popsicles, milkshakes, mashed potatoes, mac-and-cheese
• Avoid citrus, salty, spicy, hard foods
• Adequate hydration is the top priority - more important than solid food intake

2. Primary Herpetic Gingivostomatitis (HSV-1)

• Antiviral: Acyclovir (oral or IV depending on severity) - most effective if started within 72-96 hours of symptom onset
• Pain control: Ibuprofen or acetaminophen
• Topical analgesia: Lidocaine gel (use carefully in young children due to risk of aspiration/systemic absorption)
• Chlorhexidine rinses to prevent secondary bacterial infection
• Adequate fluids and hydration; hospitalize if unable to drink
• Self-limiting; resolves in 1-2 weeks

3. Herpangina / Hand-Foot-Mouth Disease (Coxsackievirus)

• No effective antiviral agents currently exist for these conditions
• Treatment is entirely supportive:
  • Antipyretics (paracetamol/ibuprofen)
  • Oral analgesics for pain
  • Fluids to prevent dehydration
  • Soft, cool diet
• Self-limiting; resolves within 10 days
• Return to school is appropriate once fever has resolved

4. Traumatic Ulcers

• Remove the source of trauma (sharp tooth edge, ill-fitting appliance)
• Treatment is palliative: topical analgesia, soft diet
• Heals once irritant is eliminated

5. Important Considerations in Pediatrics

• Recurrent, severe, or multiple
• Associated with fever, rash, or systemic symptoms
• Not healing in the expected time frame

• Crohn disease, celiac disease, IBD
• Behcet disease (oral + genital ulcers + eye involvement)
• PFAPA syndrome (Periodic Fever, Aphthous stomatitis, Pharyngitis, Adenitis) - common in young children
• Cyclic neutropenia, HIV
• Nutritional deficiencies (B12, folate, iron)
• Drug-induced (NSAIDs, beta-blockers, certain antibiotics)

• Tetracyclines: avoid in children <12 years (tooth staining)
• Topical steroids long-term: combine with antifungals to prevent candidiasis
• Lidocaine topical: use with caution in infants due to systemic absorption risk

When to Refer / Seek Urgent Review

• Ulcers not healing after 2-3 weeks
• Very large (>1 cm), deep, or rapidly enlarging ulcers
• Systemic signs (fever, malaise, lymphadenopathy) beyond expected viral illness timeline
• Suspected malignancy (single painless ulcer with rolled edges)
• Immunocompromised child
• Unable to maintain hydration

Key Points - Pediatric Mouth Ulcer Treatment

• Paracetamol or ibuprofen for pain
• Soft, cool diet - cold drinks, popsicles, mashed foods
• Maintain hydration (priority over food)
• Avoid citrus, spicy, or salty foods

1. Liquid antacid applied to the ulcer (age 1+)
2. Topical anesthetic (benzocaine paste, lidocaine gel)
3. Chlorhexidine 0.2% rinse
4. Topical corticosteroid (triamcinolone/betamethasone paste or rinse)
5. Systemic prednisone - for severe/refractory cases only

Toothache (Odontalgia) - Treatment Guide

Understanding the Cause First

Pharmacological Treatment

First-Line - NSAIDs (ADA 2023/2024 Clinical Practice Guidelines)

• Ibuprofen 400 mg every 6-8 hours (most evidence)
• Naproxen sodium 440 mg every 8-12 hours
• Combination: Ibuprofen 400 mg + Acetaminophen 500 mg together (superior to either alone)
• Maximum doses per day: Ibuprofen 1200 mg OTC / 2400 mg prescription; Acetaminophen 4000 mg/day (adults), 3000 mg/day (elderly)

• Ibuprofen 10 mg/kg/dose every 6-8 hours (preferred - anti-inflammatory + analgesic)
• Paracetamol 15 mg/kg/dose every 4-6 hours (alternative or add-on)
• Do NOT use aspirin in children due to risk of Reye syndrome
• ADA published a separate pediatric dental pain guideline (JADA, September 2023)

Topical/Local Measures

• Clove oil (eugenol): saturate cotton, place directly in cavity or on gum - provides 2-4 hours of relief; do not use more than a few times (nerve irritation risk)
• Viscous lidocaine gel: apply directly onto the affected tooth or cavity - temporary relief only; do not exceed total lidocaine dose limit
• Benzocaine topical: apply to affected tooth and surrounding gum tissue
• 2-octylcyanoacrylate (tissue adhesive): apply to fractured tooth to reduce air/temperature sensitivity - lasts <24 hours (anecdotal, not formally approved intraorally)
• Local anesthetic injection (in clinical settings): supraperiosteal injection of 2% lidocaine with epinephrine 1:100,000 or bupivacaine (longer duration: 4-12 hours) for complete temporary pain relief

Opioid Analgesics

• Reserve for: cases where NSAIDs are contraindicated, or first-line therapy is insufficient
• Not recommended as routine first-line for dental pain (ADA/CDC guidance)
• If used: lowest effective dose for shortest duration; avoid in adolescents due to misuse risk

Antibiotic Therapy

• Localized or spreading facial swelling
• Draining abscess
• Systemic signs of infection (fever, malaise, trismus)
• Immunocompromised patient
• Unable to access definitive dental care within 48 hours

• First-line: Amoxicillin 500 mg TDS x 5-7 days (children: 25-50 mg/kg/day in 3 doses)
• Penicillin allergy: Clindamycin 300 mg TDS (children: 10-30 mg/kg/day)
• Alternatives: Erythromycin, Metronidazole (often combined with amoxicillin for anaerobic coverage), Amoxicillin-clavulanate

Definitive Dental Treatment

Non-Pharmacological / Home Measures

• Rinse with warm salt water to reduce inflammation and clean the area
• Avoid very hot, cold, sweet, or hard foods on the affected side
• Cold compress on the cheek (15 min on/off) for swelling
• Maintain good oral hygiene around the affected tooth
• Do NOT place aspirin directly on the gum tissue (causes chemical burn)

When to Seek Urgent/Emergency Care

• Facial or neck swelling (risk of spreading infection - Ludwig's angina)
• Difficulty swallowing or breathing
• Fever with severe pain
• Trismus (inability to open mouth)
• Tooth trauma with avulsion (knocked-out tooth) - seek care within 30-60 minutes for replantation

Special Notes

• Referred pain: Acute sinusitis, TMJ disorder, and herpes zoster can all mimic toothache - examine carefully if the tooth appears normal clinically
• Tongue piercing: Metal balls can cause microcracks in teeth over time, leading to pain
• Post-extraction pain: NSAIDs ± acetaminophen first-line; dry socket (alveolar osteitis) requires irrigation and zinc-oxide/eugenol dressing

Dental Injections for Toothache - Complete Guide

Local Anesthetic Agents Used

• Lidocaine without epinephrine: 5 mg/kg (max 300 mg)
• Lidocaine with epinephrine: 7 mg/kg (max 500 mg)
• Bupivacaine without epinephrine: 2 mg/kg (max 175 mg)

Epinephrine is added for vasoconstriction - it prolongs anesthesia and reduces systemic absorption. Use cautiously in patients with cardiac disease (max 3.5 mL of 1:100,000 epinephrine solution).

Types of Dental Injections

1. Supraperiosteal Injection (Local Infiltration) - Most Common

• 25 or 27-gauge short needle
• Insert at the buccal sulcus at the apex of the tooth (~45° angle)
• Aspirate first (to avoid intravascular injection)
• Inject 1-2 mL slowly over 60 seconds
• Onset: 2-5 minutes
• If anesthesia is incomplete, supplement with injection on the palatal side

2. Inferior Alveolar Nerve Block (IANB) - Key Block for Lower Teeth

1. Patient seated with mouth wide open; lower jaw horizontal
2. Target: the lingula (small bony bump) on the inner ramus of the mandible, where the inferior alveolar nerve enters the mandibular foramen
3. Place thumb over the pterygomandibular raphe and pull tissue laterally
4. Grasp posterior border of mandible with middle finger - the imaginary line between thumb and finger marks the vertical target height
5. Advance needle at an oblique angle (barrel of syringe over the opposite bicuspid region) to 1-2 cm depth until bone is gently contacted
6. Aspirate - if blood returns, withdraw and reposition
7. Inject 1.5-2 mL slowly over 60 seconds
8. Onset: 5-10 minutes (wait for lip tingling/numbness)

3. Akinosi Closed-Mouth Mandibular Block

4. Posterior Superior Alveolar (PSA) Nerve Block

5. Periodontal Ligament (Intraligamentary) Injection

6. Intrapulpal Injection

Choosing the Right Injection by Tooth Location

Step-by-Step Pre-Injection Protocol

1. Apply topical anesthetic first (benzocaine 20% gel or lidocaine 5% ointment) to the injection site for 1-2 minutes - significantly reduces needle insertion pain
2. Dry the mucosa with gauze before applying topical
3. Use the finest gauge needle appropriate (27-gauge for infiltrations, 25-gauge for blocks)
4. Warm the anesthetic cartridge to body temperature (reduces discomfort)
5. Always aspirate before injecting to avoid intravascular injection
6. Inject slowly - rapid injection is the main cause of pain during the procedure

Complications and How to Avoid Them

Important Notes

• Always temporary - injection anesthesia wears off; definitive dental treatment (filling, root canal, extraction) must follow
• If abscess is present, local anesthetics work poorly in infected/acidic tissue - control infection first, or use a nerve block away from the inflamed area
• Bupivacaine is preferred when prolonged pain relief is needed (e.g., post-procedure) as it lasts 4-12 hours and reduces the need for opioids afterward
• In emergency settings (ED/urgent care), a simple supraperiosteal injection for upper teeth or an IANB for lower teeth provides complete, immediate pain relief while the patient awaits definitive dental care