Nomogram risk model of inferior alveolar neurovascular bundle injury after extraction of impacted wisdom teeth
Objective To analyze the nomogram risk model of lower alveolar neurovascular bundle injury after mandibular impacted wisdom tooth extraction.Methods The clinical data of 193 patients who received mandibular impacted wisdom tooth extraction in Baoji Hospital of Traditional Chinese Medicine from February 2022 to November 2023 were retrospectively analyzed.3 months after surgery,the patients were divided into the occurrence group and the non-occurrence group according to whether the inferior alveolar neurovascular bundle injury occurred.By comparing the clinical data of the two groups,the influencing factors of lower alveolar neurovascular bundle injury after mandibular impacted wisdom tooth extraction were analyzed,and the risk model of lower alveolar neurovascular bundle injury after mandibular impacted wisdom tooth extraction was constructed and verified.Results 3 months after operation,the incidence of lower alveolar neurovascular bundle injury in 193 patients was 12.95％(25/193).In the occurrence group(n=25),the age was ≥ 25 years old,the gender was female,the depth of impacted was low impacted,the relationship was classified as Class Ⅲ,the lower alveolar canal(IAC)was offset,the orientation relationship between impacted teeth and IAC was class Ⅱ-Ⅲ,and the contact relationship between impacted teeth and IAC was class Ⅱ-Ⅲ,the proportion of cases in the occurrence group was higher than that in the non-occurrence group(n=168)(all P＜0.05).Age(OR=5.280,95％CI:1.856-15.025),depth of impacted teeth(OR=5.766,95％CI:2.026-16.407),direction relationship between impacted teeth and IAC(OR=4.504,95％CI:1.583-12.816),and the contact relationship between impacted teeth and IAC(OR=3.991,95％CI:1.403-11.356)were the influencing factors of lower alveolar neurovascular bundle injury after mandibular impacted wisdom tooth extraction(all P＜0.05).The sensitivity,specificity and area under the curve were 88.00％,91.07％,and 0.906(95％CI:0.748-0.959)for the prediction of inferior alveolar neurovascular bundle injury after mandibular impacted wisdom tooth extraction.Conclusions The risk model of lower alveolar neurovascular bundle injury after mandibular impacted wisdom tooth extraction was established based on age,depth of impacted teeth,direction relationship between impacted teeth and IAC,and contact relationship between impacted teeth and IAC,which is helpful for early assessment of lower alveolar neurovascular bundle injury risk.
万方数据
维普
