华西口腔医学杂志2026，Vol.44Issue(2)：188-196,9.DOI:10.7518/hxkq.2025.2025130
活髓切断联合断冠再粘接术治疗上颌年轻恒前牙复杂冠根折的临床疗效及预后因素分析
Clinical efficacy and prognostic factors of pulpotomy combined with fragment reattachment in treating compli-cated crown-root fractures of maxillary young permanent anterior teeth
杨鑫 1王园源 1陈婵婵 1丁桂聪 1廖心敏 1廖志清1
作者信息
- 1. 深圳市儿童医院口腔科,深圳 518000
- 折叠
摘要
Abstract
Objective This study aimed to evaluate the clinical efficacy of pulpotomy combined with fragment reat-tachment in treating complicated crown-root fractures of maxillary young permanent anterior teeth.Methods A retro-spective analysis of 37 cases of complicated crown-root fractures treated at Shenzhen Children's Hospital from January 2019 to December 2023 was conducted.Outcomes such as fragment retention rate,pulp survival rate,root development,and periodontal health were assessed,and the influencing factors were analyzed.Results The fragment retention rates were 80.9%at 1 year and 69.5%at 2 years.The remaining crown height(cervical half group vs.incisal half group)emerged as a critical predictor of retention(P<0.05,hazard ratio=7.45,95%confidence interval:1.28-43.48).The pulp survival rate reached 91.6%at 1 year,with no significant influencing factors identified.In cases where the fractured crown retained for over one year,teeth at Nolla stage 8 showed significantly greater root elongation and apical foramen narrowing compared to those at Nolla stage 9(P<0.05),normal periodontal scores were observed in 59.3%.Conclu-sion Pulpotomy combined with fragment reattachment effectively preserves pulp vitality and restores dental function and morphology in young permanent anterior teeth.The remaining crown height serves as a key prognostic indicator for fragment retention.This approach also promotes root development and demonstrates favorable clinical outcomes.关键词
复杂冠根折/断冠再粘接/活髓切断/年轻恒牙/生存分析Key words
complicated crown-root fracture/frag-ment reattachment/pulpotomy/young permanent teeth/survival analysis分类
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杨鑫,王园源,陈婵婵,丁桂聪,廖心敏,廖志清..活髓切断联合断冠再粘接术治疗上颌年轻恒前牙复杂冠根折的临床疗效及预后因素分析[J].华西口腔医学杂志,2026,44(2):188-196,9.
