Abstract
Objective: to determine the frequency of lingual nerve injury after the removal of impacted mandibular 3rd molar. Study Design: Cross sectional study Place and duration: outdoor patient department of Oral and Maxillofacial Surgery Hitec Dental College, Foundation College of Dentistry Peace Gernal Hospital, Nishtar Institute of Dentistry,Multan from January 2018 to January 2019 in one year duration. Results: Study included 335 patients with mean age of 20.86 + 1.95 yrs. Males were 190(56.7%) and females were 145(43.3%).lingual nerve injury was found in 28 patients(8.4%)while it was absent in 307 patients(91.6%).There was no significant effect was found on the frequency of lingual nerve injury for age or gender of the patient population. Conclusion: Lingual nerve injury is a commonly encountered complication among those undergoing extraction of impacted third molar. It should be carefully sought in all the patients undergoing the surgical procedure and improvement in surgical skills and techniques needs to be emphasized to further reduce the incidence and risk of this complication. Keywords: Impacted third molar, Lingual nerve, OPG (orthopantomogram), Dentistry, Mandible. DOI : 10.7176/JMPB/57-01 Publication date : July 31 st 2019
Highlights
The impacted third molar is sometime fails to break throghthe dental arch within normal time of expectation[1], so extraction of third molar teeth is common and most frequent surgical procedure in dental surgery[2]
Contributing factors of complications of this surgical procedure are medical history, age, old age, use of oral contraceptives, smoking, pericoronitis, poor hygiene, type of impaction, contact of lingual nerve and inferior alveolar nerve with third molar, anesthetic technique, surgeon’s experience, technique used for procedure, duration of procedure, use f preoperative antibiotics and intra socket medication[5]
Immune suppression, cardiovascular pathologies, nutritional and/or neurological alterations, impacted third molar associated with cyst or tumor, impacted third molar within the line of fracture of angle of mandible were excluded from the study
Summary
The impacted third molar is sometime fails to break throghthe dental arch within normal time of expectation[1], so extraction of third molar teeth is common and most frequent surgical procedure in dental surgery[2]. Injury of somatosensory branches supplied by the trigeminal nerve is the common risk associated with removal of third molar. Main branches of trigeminal nerve on risk are inferior alveolar nerves and lingual nerve[4]. Contributing factors of complications of this surgical procedure are medical history, age, old age, use of oral contraceptives, smoking, pericoronitis, poor hygiene, type of impaction, contact of lingual nerve and inferior alveolar nerve with third molar, anesthetic technique , surgeon’s experience, technique used for procedure, duration of procedure, use f preoperative antibiotics and intra socket medication[5]. Clinical and radiological evaluation of third molar is necessary before removal of third molar teeth to avoid or minimize the expected complications[6,7]
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