Effect of implantable titanium nail intermaxillary traction combined with titanium plate internal fixation on patients with mandibular angle fracture
Objective To investigate the effects of implantable titanium nail intermaxillary traction combined with titanium plate internal fixation on pain,mastication,and limitation of mouth opening in patients with mandibular angle fracture.Methods This study was a randomized controlled trial.A total of 108 patients with mandibular angle fracture admitted to Affiliated Hospital of Yan'an University from September 2019 to September 2023 were enrolled in this study and were divided into an observation group and a control group using the random number table method,with 54 cases in each group.In the observation group,there were 31 males and 23 females,aged(46.21±5.03)years,and the fracture site was on the left side in 26 cases and on the right side in 28 cases.In the control group,there were 33 males and 21 females,aged(45.79±6.18)years,and the fracture site was on the left side in 29 cases and on the right side in 25 cases.The observation group received implantable titanium nail intermaxillary traction combined with titanium plate internal fixation,and the control group received arch splint intermaxillary traction external fixation combined with titanium plate internal fixation.The changes of Visual Analogue Scale(VAS)score,masticatory function,mouth opening degree,and mandibular mobility before and after surgery were compared between the two groups,and the healing status of the two groups at 3 months after surgery was evaluated.x2 test,rank sum test,and t test were used.Results At 1 month and 3 months after surgery,the VAS scores of the two groups were lower than those before surgery,and those of the observation group were lower than those of the control group[(2.03±0.86)points vs.(2.49±0.71)points,(0.22±0.05)points vs.(0.29±0.07)points](t=3.031 and 5.980,both P＜0.05).At 1 month and 3 months after surgery,the masticatory function scores of the two groups were higher than those before surgery,and those of the observation group were higher than those of the control group[(5.76±1.13)points vs.(5.02±1.07)points,(8.65±0.67)points vs.(8.23±0.59)points](t=3.494 and 3.457,both P＜0.05).At 1 month and 3 months after surgery,the mouth opening and mandibular anterior-to-posterior motion of the two groups were higher than those before surgery,and those of the observation group were higher than those of the control group(all P＜0.05).In the observation group,there were 29 cases of first stage healing,23 cases of second stage healing,and 2 cases of third stage healing;in the control group,there were 22 cases of first stage healing,21 cases of second stage healing,and 11 cases of third stage healing;there was a statistically significant difference between the two groups(Z=3.971,P=0.046).Conclusion Implantable titanium nail intermaxillary traction combined with titanium plate internal fixation helps to improve the pain,mastication,and limitation of mouth opening in patients with mandibular angle fracture,and promote the fracture healing and recovery.
Mandibular angle fractureImplantable titanium nail intermaxillary tractionTitanium plate internal fixationPainMasticationLimitation of mouth opening
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