牵引钩可隐藏式球形颊面管与方形颊面管的临床性能对比研究OA

Objective This study comprehensively compares the differences between concealable traction hook spherical buccal tubes(concealable spherical tubes)and conventional rectangular buccal tubes in terms of patient com-fort,incidence of buccal mucosal injury,periodontal health indices,and clinical bond failure rate to provide evidence for clinical application.Methods Thirty subjects were enrolled and treated using a split-mouth design,where the two sides of each patient's oral cavity were randomly as-signed to receive either conventional rectangular buccal tubes(group A)or concealable spherical buccal tubes(group B).During treatment,pain scores,ulcer occur-rence,and bond failure of the first molar buccal tubes were recorded.Periodontal indices,including plaque in-dex(PLI),gingival index(GI),and sulcus bleeding in-dex(SBI)of the first molars,were assessed before treatment(T0)and 30 days after tube bonding(T1).Results The pain scores in group A were significantly higher than those in group B(Z=-5.231,P<0.001).Moderate or higher pain was reported by 86.7%of patients in group A,whereas 90.0%of patients in group B reported mild pain only.The inci-dence of ulcers in group A(76.7%)was significantly higher than that in group B(3.3%,Z=-4.508,P<0.001).After treatment,the periodontal indices in both groups increased significantly compared to pre-treatment levels(P<0.05);however,the increases in PLI,GI,and SBI were significantly greater in group A than in group B(P<0.001).The bond failure rate in group A(26.7%)was significantly higher than that in group B(8.3%,P<0.001).Conclusion The clini-cal performance of concealable spherical buccal tubes is significantly superior to that of conventional rectangular buc-cal tubes in improving patient comfort,reducing the incidence of mucosal injury and clinical bond failure,and maintain-ing periodontal health.This design offers patients a more comfortable and healthier orthodontic treatment experience.