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Impacted Wisdom Tooth (Third Molar)

Failure of third molar (wisdom tooth) eruption due to inadequate space, abnormal angulation, or soft/hard tissue obstruction causing pericoronitis, caries, periodontal disease, cysts, and pain often requiring surgical extraction.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Ağız ve Diş Sağlığı department. Book Appointment →

What is Impacted Wisdom Tooth (Third Molar)?

Impacted wisdom teeth are third molars that fail to erupt to functional occlusion due to insufficient retromolar space, abnormal eruption path, or physical obstruction by soft tissue, bone, or adjacent teeth.

Eruption typically occurs ages 17-25; impaction prevalence is 73% in adults under 30. Mandibular third molars more commonly impacted (40-65%) than maxillary. Pell-Gregory classification (Class I-III for ramus relationship, Position A-C for vertical depth) and Winter classification (mesioangular 43%, vertical 38%, distoangular 6%, horizontal 3%) guide surgical planning.

Complications of impaction: pericoronitis (acute or chronic gingival infection over partially erupted tooth), distal caries on second molar (50% incidence), periodontal pocket formation, dentigerous cyst, ameloblastoma, root resorption, infection spread, and chronic pain. Asymptomatic full bony impactions in elderly may not require extraction.

Symptoms

Pain in posterior jaw region
Swelling and tenderness over tooth area
Difficulty opening mouth (trismus)
Bad taste or breath from pericoronitis
Pus discharge over partially erupted tooth
Headache or earache on affected side
Adjacent tooth pain or sensitivity
Crowding or shifting of anterior teeth

Risk Factors

Age 17-25 years (typical eruption period)
Inadequate retromolar space (small jaws)
Genetic predisposition to impaction
Premolar extraction history (rare modern practice)
Maxillofacial development abnormalities
Dietary factors (soft modern diet reducing jaw growth)
Local pathology (cysts, tumors blocking eruption)
Systemic conditions (cleidocranial dysplasia)

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Acute pain and swelling in posterior jaw (pericoronitis)
  • Recurrent infections over wisdom tooth area
  • Difficulty opening mouth (trismus)
  • Bad breath or taste despite oral hygiene
  • Caries or periodontal disease on second molar
  • Cyst or radiolucent lesion on dental X-ray
  • Pre-orthodontic evaluation
  • Pre-treatment for radiation therapy in head/neck region

Treatment Methods

01
Pre-operative imaging: panoramic radiograph for screening, CBCT (cone-beam CT) for proximity to inferior alveolar nerve
02
Acute pericoronitis management: irrigation under operculum, chlorhexidine 0.2% rinse, NSAIDs, antibiotics if systemic involvement
03
Surgical extraction under local anesthesia for routine cases
04
Sedation (oral, IV) or general anesthesia for complex extractions, multiple impactions, or anxious patients
05
Surgical technique: incision design (envelope, triangular, or modified), mucoperiosteal flap reflection
06
Bone removal with surgical handpiece, tooth sectioning if needed for complex angulations
07
Tooth elevation and delivery, ensure complete root removal
08
Wound debridement, irrigation with sterile saline, hemostasis
09
Closure with 3-0 silk or vicryl sutures
10
Post-operative care: ice pack, elevation, soft diet, NSAIDs, antibiotics for 5-7 days, suture removal at 7-10 days
11
Coronectomy alternative: deliberate retention of roots near IAN to avoid nerve injury risk

Which Department to Visit?

You can visit our Ağız ve Diş Sağlığı department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Ağız ve Diş Sağlığı Department

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.