| Objectives: To explore the application of surface projection digital positioning guide plate based on cone beam computed tomography(CBCT)and computer-aided design/computer-aided manufacture(CAD/CAM)technology in the extraction of impacted teeth,and to evaluate its clinical efficacy,so as to provide reference for clinical practice.Methods: A total of 50 patients who needed to extract the impacted teeth in the 920 th Hospital of the Joint Logistics Support Force from June 2022 to February2023 were collected.All patients met the inclusion and exclusion criteria and signed the informed consent for tooth extraction before surgery.In this study,impacted teeth and impacted supernumerary teeth were classified as impacted teeth.A non-randomized controlled study was conducted.The subjects were divided into two groups according to whether they voluntarily agreed to use the surface projection type digital positioning guide plate for impacted tooth extraction,with 25 patients in each group.The experimental group included 12 males and 13 females,with an average age of 23.56±4.80 years.The control group included 11 males and 14 females,with an average age of 22.56 ± 5.21 years.In the experimental group,the surface projection digital positioning guide plate was used to accurately guide the extraction of the impacted teeth,while in the control group,the traditional conventional surgical method was used to extract the impacted teeth.All patients were performed by the same doctor in preoperative preparation,local anesthesia,incision and flap,extraction socket treatment and wound closure,and the same dose of antibiotics was given after surgery.Recorded the operation time(incision flap to suture completion)of each patient;Pain on 1 day,3 days and 7 days after the operation(VAS);Trismus on 1days,3 days and 7 days after the operation;Duration of facial swelling on 1 day,3days and 7 days after the operation;Complications within 1 week after operation(Incidence of postoperative bleeding,adjacent tooth injury,TMJ pain,infection or nerve damage).Results:1.The mean operative time of the experimental group was 23.16±2.12 min;the mean operative time of the control group was 32.40±2.04 min;The operation time of the experimental group was shorter than that of the control group,the difference between the two groups was statistically significant(P<0.05).2.On postoperative days 1 and 3,there was a statistically significant difference in pain between the experimental group and the control group(P < 0.05);on postoperative days 7,there was no significant difference in pain between the two groups,which was not statistically significant(P>0.05).3.On postoperative days 1 and 3,there was a statistically significant difference in trismus between the experimental group and the control group(P<0.05);on postoperative days 7,there was no significant difference in pain between the two groups,which was not statistically significant(P>0.05).4.The duration of swelling in the operated area within 1 week after operation was significantly shorter in the experimental group than in the control group,and the difference between the two groups was statistically significant(P<0.05).5.The incidence of postoperative bleeding,adjacent tooth injury,and TMJ pain in the experimental group was significantly lower than that in the control group,and the difference was statistically significant(P<0.05),and no infection or nerve damage occurred in both the experimental and control groups after operation.Conclusions:1.The use of a surface projection digital positioning guide plate can significantly shorten operative time,reduce operative risk,and improve operative efficiency in the extraction of complex impacted teeth.2.The use of a surface projection digital positioning guide plate allows for rapid and precise positioning during the extraction of complex impacted teeth,simplifies the operative procedure,reduces surgical trauma,and alleviates the patient’s postoperative reaction.3.The application of surface projection digital positioning guide plate for extraction of complex impacted teeth is more satisfactory and worthy of further study and use in clinical practice. |
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