Abstract
IntroductionHorizontal root fracture (HRF) is a complex traumatic dental injury that affects the pulp, dentin, cementum, and periodontal ligament. This retrospective cohort study evaluated treatment outcomes in permanent teeth with HRF. MethodsWe analyzed clinical and radiographic data from a dental trauma center (2006–2022). Permanent teeth with HRF with a follow up of ≥12 weeks were considered for outcome assessment (defined as clinical normalcy and radiographic healing at the fracture line). Prognostic factors were identified through multivariable logistic regression analyses (P value ≤ .05). Results125 teeth from 103 patients were included. After a median follow-up of 79 weeks, the overall favorable outcome was 92%. This includes teeth that received emergency splinting/repositioning at baseline (62.2%) and those that received subsequent endodontic intervention for the coronal fragment (baseline: 85%; subsequent follow-ups: 91.8%). Being male and incomplete root development were both significantly associated with a better outcome of splinting/repositioning (OR = 2.58; 95% CI, 1.06-6.24 and OR = 4.37; 95% CI, 1.16-16.41, respectively) and a reduced likelihood of requiring endodontic treatment (OR = 0.44; 95% CI, 0.20-0.96 and OR = 0.24; 95% CI, 0.08-0.76, respectively). Treatment delays surpassing one week were significantly associated with an increased likelihood of requiring endodontic treatment compared to timely presentations within 24 hours (OR = 3.06; 95% CI, 1.07-8.77; P value < .05). ConclusionWith timely diagnosis and treatment, and close monitoring, HRF cases can achieve a 92% favorable outcome. Male sex and incomplete root development correlate with improved baseline outcomes and a reduced need for endodontic treatment. Conversely, delayed presentation increases the likelihood of requiring endodontic intervention.
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