• Do not wait a week for the treating dentist. Arrange same-day contact with the dentist/endodontist, emergency dental service, or oral-maxillofacial service.
• If swelling is localized and the patient is systemically well, antibiotics can be a short bridge, but dental treatment remains necessary.
• If there is fever, malaise, rapidly increasing facial/submandibular swelling, trismus, dysphagia, drooling, voice change, floor-of-mouth elevation, eye swelling, neck swelling, breathing difficulty, or immunocompromise, send him for emergency department / maxillofacial assessment immediately. These can signal deep-space infection and airway risk.
• For pain, if no contraindications, usual non-opioid analgesics such as ibuprofen and/or acetaminophen are generally preferred; avoid exceeding labeled doses and account for renal disease, peptic ulcer/GI bleed risk, anticoagulants, liver disease, or alcohol use.
• Antibiotics are not routinely indicated for dental pain alone, but swelling with inability to obtain prompt definitive treatment is the relevant exception in the ADA pathway. The ADA stewardship summary emphasizes that most pulpal/periapical pain and swelling require dental intervention rather than antibiotics alone.

Food and drinks

• Choose a soft, lukewarm diet: yogurt, curd, khichdi, porridge, rice, soft pasta, scrambled eggs, soups that are not hot, mashed vegetables, banana, fish.
• Chew on the opposite side. Do not bite with the tooth carrying the temporary filling.
• Avoid hard or sticky foods that can dislodge or fracture the temporary restoration: nuts, chips, popcorn, hard sweets, chewing gum, toffee, caramel, ice, crusty bread.
• Avoid very hot or very cold foods/drinks if they provoke pain.
• Keep well hydrated with water.
• Avoid frequent sugary drinks/snacks and acidic drinks such as soft drinks and energy drinks, especially while the tooth is temporarily sealed.
• No alcohol, particularly if he is taking antibiotics or analgesics.

Oral care

• Continue brushing twice daily with a soft toothbrush and fluoride toothpaste, gently around the treated tooth and gumline.
• Gentle warm salt-water rinses can be used: about half teaspoon of salt in a glass of warm water, swish gently and spit, 2-3 times/day. Do not rinse vigorously.
• Do not put aspirin, clove oil, alcohol, or any chemical directly on the gum or temporary filling. This can burn tissue or disrupt the restoration.
• Avoid aggressive flossing or toothpicks around the temporary filling. If food gets trapped, rinse gently.

Lifestyle and protection

• Do not smoke, vape, or use tobacco. They impair oral healing and worsen gum inflammation.
• Avoid chewing gum, nail-biting, or using teeth to open packets.
• If he clenches/grinds his teeth, avoid chewing hard foods and mention this to the dentist.
• Take prescribed medicines exactly as directed. Do not save, share, repeat, or extend antibiotics without reassessment.
• If the temporary filling falls out, cracks, or feels high when biting, contact the dentist promptly. Keep the area clean and avoid chewing there.

When to escalate

“Antibiotics are not bad for the body when they are genuinely needed and used for the shortest appropriate time. They treat bacterial infection and can help prevent a dental infection from worsening while the dentist provides the real treatment. But they should not be taken casually, because they can cause side effects and overuse promotes antibiotic resistance.”

• Common: nausea, loose stools/diarrhea, mild stomach upset, sometimes a rash.
• Less common but serious: allergic reaction, severe or bloody diarrhea, blistering/peeling rash, facial/lip/tongue swelling, wheeze, or breathing difficulty.
• It can temporarily alter normal gut bacteria. Usually this settles after the short course; probiotics are not essential, but yogurt/curd can be taken if tolerated.
• Unnecessary or repeated courses encourage bacteria to become resistant, making future infections harder to treat.

• Do not start if there is a history of immediate penicillin/amoxicillin allergy, such as hives, swelling, wheeze, or anaphylaxis, without clinician advice.
• Take it exactly as prescribed. Do not share it, save leftovers, double doses after a missed dose, or repeat a course later without review.
• Taking it after food may reduce nausea.
• Stop and seek urgent help for allergy symptoms, severe/persistent diarrhea, or worsening swelling/systemic symptoms.

1. The infection source is still inside/around the tooth. Antibiotics may temporarily suppress it, but cannot replace re-opening the tooth, drainage if needed, or completing the root canal.
2. Worsening pain and new swelling after a recent antibiotic course can mean inadequate source control, an abscess requiring drainage, a non-bacterial issue, or bacteria not adequately covered by the original treatment.
3. Repeated antibiotics without dental treatment increase risks of diarrhea, allergy, gut-flora disruption, and antimicrobial resistance.

• exact amoxicillin strength and schedule previously taken
• start and stop dates
• whether there was improvement during or after it
• any penicillin allergy, fever, malaise, difficulty opening mouth, swallowing, or breathing.

• Vertical root fracture, particularly in a single-rooted tooth. This usually cannot be predictably repaired.
• Too little sound tooth structure remains because of deep decay, a major break, or resorption, so a crown/filling cannot be retained.
• Severe periodontal bone loss, marked tooth mobility, or furcation disease such that the tooth has inadequate support.
• Root anatomy, blockage, perforation, or previous treatment issues that cannot be managed by retreatment or endodontic surgery.
• Persistent infection after appropriate retreatment and, where suitable, apical surgery, when the tooth cannot be predictably maintained.
• The tooth has a very poor long-term functional value compared with replacement options.

• Vertical root fracture or a deep crack extending into the root.
• The tooth is not restorable, for example decay or fracture extends too far below the gum/bone and there is not enough solid tooth left to support a durable crown.
• Severe periodontal bone loss, deep isolated periodontal pocket suggesting a fracture, or substantial mobility.
• A perforation, resorption, blocked canal, or complex anatomy that cannot be predictably treated by an endodontist.
• Persistent/recurrent infection despite proper canal disinfection, retreatment, adequate drainage, and, if appropriate, root-end surgery.
• The tooth is strategically difficult to maintain, such as if it has poor access or cannot receive a reliable final restoration. This is assessed alongside the neighbouring wisdom tooth and bite.

• periapical X-ray, and sometimes CBCT
• remaining tooth structure and restorability
• periodontal probing and mobility
• crack/fracture signs
• response after re-treatment.