BACKGROUNDExtraction of impacted mandibular third molars is a routinely performed procedure and is commonly associated with the worrisome complications of inferior alveolar nerve (IAN) injury. Many different techniques have been advocated over the conventional extraction procedures to overcome these complications. The two-stage technique for removal of impacted mandibular molars is one such novel technique that has been discussed in literature, but not very often used. Our study aims to compare this technique with the conventional technique and evaluate its advantages if any.The aim of this prospective comparative study was to evaluate the pros and cons of the two-stage technique of extraction of impacted lower third molar to the conventional technique in terms of Inferior alveolar nerve (IAN) injury, healing post-operatively and patient's compliance as a whole.
MATERIALS AND METHODSThis clinical prospective non-randomised controlled trial involved twenty patients diagnosed with horizontally impacted lower third molar in close proximity of the inferior alveolar nerve placed. The sample size was chosen as per convenience. The subjects were placed arbitrarily into two groups of ten patients-Test group and Control group respectively. The control group underwent the conventional technique of transalveolar extraction for the impacted lower molar and the test group underwent the two-stage technique for removal of the same.
RESULTSBetween June 2014 -September 2016, twenty patients were included in the study; 8 of the patients were women (40%) and 12 men (60%) with a mean age of 25 years. The test and control groups showed no significant difference in the incidence of IAN injury (10% v/s 20% respectively). Healing of the soft tissues was better in the control group, as was the patient's compliance and operator satisfaction.
CONCLUSIONBoth the techniques studied have their own advantages and disadvantages with neither techniques being significantly better than the other. Judicious use of the two-stage technique, two-stage method for extracting a horizontally impacted lower third molar however can be useful for decreasing the rate of post-operative complication of inferior alveolar nerve injury. As simple, humble and routine as the procedure seems, every case poses its own challenge more so pertaining to horizontally impacted lower third molars. The surgical procedure of removal of these teeth is associated with various complications such as postoperative infection, 1 alveolar fracture 2 and dysfunction of lingual and/ or inferior alveolar nerves. 3 The rate of overall complications has been reported to range from 2.6% to 30.9% 4-7 and lingual and/ or inferior 'Financial or Other Competing Interest': None. Submission 27-09-2017, Peer Review 12-11-2017, Acceptance 18-11-2017, Published 27-11-2017. Corresponding Author: Dr. Tripthi Prakash Shetty, Senior Lecturer, Department of Oral and Maxillofacial Surgery, A. B. Shetty Memorial Institute of Dental Sciences, Nitte University, Derlakatte, Mangalore 575018....