Abstract
Purpose: It is difficult to prevent intraoperative stress in the lower jaw during impacted wisdom tooth extraction surgery. We used a bispectral index (BIS) monitor (Aspect®) to evaluate whether the possibility of stress varied according to operative stage.
Patients and Methods: The subjects were 68 healthy adults who gave consent for lower jaw wisdom tooth extraction. The extraction was performed under intravenous sedation and intraoperative changes in the BIS were analyzed. The frequency of cases in which deviation in the rising direction of the BIS index becomes larger was measured and analyzed.
Results: The rising direction of the BIS was high in the order of crown division, bone removal, root removal, local anesthesia, suturing, incision, mucoperiosteal flap peeling, and washing.
Discussion: Various methods have been used for stress evaluation during surgery. Changes in BIS values, which are considered to indicate potential stress, need to be evaluated in greater detail.
Conclusion: BIS monitoring is a feasible technique for evaluation of intraoperative stress during extraction of lower jaw impacted wisdom teeth under sedation.
