| Background:Due to changes in people’s eating habits,refined food,weak chewing function,degeneration of mandibular bone development,and insufficient eruption space,the third molars are often impacted.For mandibular third molars that cannot erupt normally,Preventive extraction is usually recommended for patients during clinical diagnosis and treatment.Common complications after extraction of mandibular impacted third molar usually include the following: postoperative facial swelling,postoperative pain,and limited mouth opening.Hypothermia therapy lowers the temperature of the skin,subcutaneous tissue,and muscle,causing vasoconstriction and reducing blood flow to the tissue,thereby reducing the delivery of inflammatory mediators and reducing the amount of regional inflammatory mediators.This way of action reduces the inflammation of the surrounding tissue,reduces the exudate,relieves the degree of edema,and reduces the limitation of mouth opening.The decrease in local tissue temperature also reduces the activation threshold of tissue pain receptors and the conduction velocity of pain nerve signals,forming a local anesthetic effect and relieving regional pain.The use of ice saline during the operation can reduce the degree of intraoperative trauma to a certain extent and reduce the temperature of the operation area.The use of ice saline,as a supplementary method of postoperative hypothermia therapy,can extend the treatment process of the existing hypothermia therapy,and provide a new idea for the treatment of complications after mandibular impacted third molar extraction.Objective:The purpose of this study is to explore the effect of intraoperative use of iced saline in preventing and mitigating complications after extraction of mandibular impacted third molar.Methods:The cases in this study come from patients who underwent extraction of impacted mandibular third molars at the Oral and Maxillofacial Surgery Clinic of Stomatological Hospital of Jilin University from December 2021 to July 2022.The number of included cases was 80 cases.Among them,there were 41 males and 39 females,aged 19 to 36 years,with an average of(25.59±4.85)years old.Under local anesthesia,high-speed turbine handpieces were used to extract mandibular middle or low level impacted wisdom teeth.During and after operation,the normal temperature group was rinsed with normal temperature saline,and the iced saline group was rinsed with iced saline.Before operation(D0),postoperative day 1(D1),postoperative day 3(D3),postoperative day 7(D7)time points for swelling picture measurement assessment,VAS visual assessment of swelling,VAS visual assessment of pain,Assessment of mouth opening limitation before and after surgery.Swelling photometric assessment is an alternative assessment method designed in our study,that is,the ratio of the distance of the swollen part of the patient’s frontal photograph to a constant length is used to assess the change in the degree of postoperative swelling of the patient.The measurement data were statistically analyzed using IBM SPSS Statistics 26 software(IBM Corporation,USA).Results:1.On the 1st,3rd,and 7th day after operation,the swelling pictures were measured and evaluated.There was a statistically significant difference between the iced saline group and the normal saline group at the swelling S1 node(P<0.05),and the iced saline group at the swelling S3 and S7 nodes There was no statistically significant difference with normal saline group(P>0.05)2.Visual evaluation of swelling was performed on the 1st,3rd,and 7th days after operation.There was a statistically significant difference between the ice saline group and normal saline group at the swelling D1 node(P<0.05),and the swelling D3,swelling D7 node ice saline group and There was no significant difference in normal saline group(P>0.05)3.The visual evaluation of swelling was performed on the 1st,3rd,and 7th days after the operation.There was a statistically significant difference between the pain D1 node ice saline group and the normal saline group(P<0.05),and the pain D3,pain D7 node ice saline group and There was no significant difference in normal saline group(P>0.05)4.On the 1st,3rd,and 7th day after operation,the incidence of different degrees of swelling in different groups was compared and analyzed.There was no statistically significant difference between the iced saline group and the normal saline group at the three observation points(P > 0.05)5.On the 1st,3rd,and 7th day after operation,the incidence rates of different degrees of pain in different groups were compared and analyzed.There was no statistically significant difference between the iced saline group and the normal saline group at the three observation points(P > 0.05)6.Comparative analysis of the incidence of postoperative patients with limited mouth opening in different groups,there was no significant difference between the ice normal saline group and the normal normal saline group(P > 0.05)Conclusion:1.In this study,the use of ice normal saline and ordinary normal saline can relieve the swelling and pain complications of impacted mandibular third molar on the first day after surgery,but has no significant effect on the third and seventh day after surgery.2.In this study,the use of ice saline and normal saline did not significantly relieve the restricted opening of impacted mandibular third molars. |
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