原位断冠再接技术联合牙髓切断术治疗年轻恒前牙复杂冠根折的临床疗效研究

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[中图分类号] R788+.4 [文献标志码] A [doi] 10.7518/hxkq.2025.2025094

[Abstract]ObjectiveThisstudyaimedtoevaluate theclinicalapplication valueofin-situcrownreatachment techniquecombined withpulpotomyin the treatmentofcomplicated crown-rootfractures inyoung permanent anterior teeth.MethodsAprospective study wasconductedon50 children withcomplicated crown-root fractures inyoung permanentanteriorteeth，whoeretreatedatthePediatricDentistryepartment，HospitalofStomatology，Xi'nJaotongUniversityfromJune2O23 toJune2024.Allpatientsunderwentin-situcrownreatachmenttechniquecombinedwithpulpotomy.Clinical examinations，radiographicevaluations，andsubjectivesatisfactionsurveys （usingaLikertscaleof1-10）were conducted at 1，6，and 12 months postoperatively. Datawere analyzed using SPSS 23.0.ResultsThe lossto-follow-up rate was 12% 心 （6/50） ），with44casescomplet ing the12 months of evaluation.The clinical success rate was 93.18% （41/44），and the radiographic success rate was 97.73% （43/44）.The subjective satisfaction scores showed a significant improvement in masticatory function from 7.03±0.52 at 1 month to 8.07±0.92 at 12 months postoperatively （P<0.05） ，whereas thescores foraesthetics，comfort，andquality-of-life impact showednostatistically significant differences （P>0.05） .Conclusion In-situ crown reattachment technique combined with pulpotomy effectively treats complicated crown-rootfracturesinyoungpermanentanteriorteeth，demonstratingahigh short-termclinicalsuccess rate，significantlyimproved masticatory function，andminimallyinvasivepreservationofpulpvitalityandrootdevelopmentpotential.This techniqueprovidesanoptimizedtreatmentoptionfordentaltraumainchildren，althoughits long-term eficacy requires further validation.

[Key words]young permanent anterior teeth；complicated crown-root fracture；in-situ crown reatachment technique；pulpotomy；clinical efficacy

年轻恒牙冠根折是儿童口腔急诊的常见类型，折裂线常累及牙髓组织，发病率占全部牙外伤的8.2%[1] ，其中，折裂线累及牙髓组织则为复杂冠根折，占全部冠根折的 97.3%[2] 。（剩余8860字）