The Clinical Study Of The Using Of Minimally Invasive Technique In Extracting Impacted Mandibular Third Molar

Impacted mandibular third molar extraction is one of the most common procedures performed in oral and maxillofacial surgery department. There are three main methods to extract the impacted mandibular third molar, using dental chisel, useing turbine drill and using minimally invasive technique. Since Kilpatrick first reported the using of turbine drill in 1953, the method has developed quickly in the developed countries. In our country, Geng Wenqi first used turbine drill in 1983 to extract impacted mandibular third molar. But this method did not become popular for many reasons. Textbooks about tooth extraction discuss most about the method of using dental chisel, but little about turbine drill. In 1990s , the emergence of the surgical impact air handpiece and surgical bur greatly facilitated oral surgical procedures in the United States. And it was the beginning of the time of minimally invasive technique. In order to study the feasibility of extraction of impacted mandibular third tooth using minimally invasive technique and to explore a standard extraction methods, extraction equipment and uniform extraction steps, we employed some new instruments and studied 600 clinical cases, and analyzed the operation time, intraoperative and postoperative complication and quality of life after extraction which provide a reference for clinical operations.The 600 examples patient of impacted mandibular third molar, divides into 2 group of each 300 examples. A group uses minimally invasive technique and new instruments to extract the impacted mandibular third molar, B group uses the dental chisel to extract the impacted mandibular third molar. The operation time, intraoperative and postoperative complication were recorded to assess the effects of the methods. we use the PoSSe Scale to measure of the severity of symptoms after extraction of third molars, and compare the scores. Results The operation time of group A and group B was 22.285±12.02501min and 16.115±12.07862min. The operation time of group A was shorter ( P < 0.05). The intraoperative and postoperative complication incidence rate was lower ( P < 0.05). The PoSSe scores in group A and B was 26.9865±15.3992 and 19.9381±13.1045. The PoSSe scores in group A was lower ( P < 0.05). Conclusion: Minimally invasive technique method is superior to dental chisel method in the extraction of impacted mandibular wisdom teeth.