Surgical Extraction of Impacted Lower Third Molar (Tooth 38) With Swelling.
20 September, 2025
Chief Complaint
- Patient reported pain in the lower left back tooth region for the past 3–4 days.
- Complained of swelling in the same area.
- Pain was dull and continuous, aggravated on chewing.
Medical History
- No known systemic illness or allergies.
- No medications taken.
Clinical Examination
- Visible localized swelling and inflammation of the gums in the region of tooth 38.
- Impacted tooth 38 (partially visible or not erupted).
- Surrounding tissues tender to palpation.
- No pus discharge or trismus noted.
Investigations
- Orthopantomogram (OPG) advised to assess
- Radiographic Findings
Diagnosis
- Pericoronitis due to impacted third molar (tooth 38).
- Associated local soft tissue swelling.
Treatment Plan
- Surgical extraction of impacted tooth 38 under local anaesthesia.
- Pre-operative antibiotic and analgesic cover prescribed.
Surgical Procedure – Step-by-Step
1.Pre-operative Protocol
- Patient explained the procedure and informed consent obtained.
- Extraoral skin prep with povidone-iodine.
- Intraoral rinse with chlorhexidine.
2. Anaesthesia
- Inferior alveolar nerve block with 2% lignocaine + adrenaline.
- Buccal and lingual nerve blocks administered for complete regional anesthesia.
3. Incision & Flap Reflection
- A ward’s incision (or modified triangular flap) made on the buccal aspect.
- Full-thickness mucoperiosteal flap raised to expose the underlying bone and impacted tooth.
4. Bone Guttering
- Buccal bone removed using straight handpiece and bur under copious saline irrigation.
- Adequate bone guttering done to visualize the crown of the tooth
5. Tooth Sectioning (if required)
- Tooth sectioned in halves or multiple pieces to minimize trauma to surrounding structures.
- Sections gently elevated and removed using elevators and forceps.
6. Socket Debridement
- Thorough curettage of the extraction socket.
- Irrigation with normal saline and betadine.
7. Hemostasis & Closure
- Bleeding controlled with gauze pressure.
- Flap repositioned and sutured using 3-0 silk sutures.
- Post-op gauze given for 30 minutes compression.
Post-operative Instructions
- Ice application for first 24 hours to reduce swelling.
- Soft diet for 48 hours, avoid spitting or straw use.
- Continue antibiotics and painkillers as prescribed.
- Rinse with warm saline/chlorhexidine after 24 hours.
- Suture removal advised after 7–10 days.
Follow-Up & Outcome
- Patient reviewed on Day 7:
Key Takeaway
- sImpacted third molars can lead to pericoronitis, pain, and swelling if not treated timely.
- Proper imaging and technique are critical for safe and effective surgical extraction.
- Patient education and post-op care help in uneventful healing.
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