Abstract
Objectives
The purpose of the study was twofold: (1) to test the hypothesis that tooth loss is independently associated with carotid atherosclerotic burden (CAB) among individuals with ischemic stroke (IS) or transient ischemic attack (TIA) and (2) to test the association between tooth loss and disability following the occurrence of cerebral ischemia.
Materials and methods
This observational study included 418 patients with IS or TIA. Tooth loss and the CAB were measured through a head and neck multidetector computed tomography angiography. CAB was analyzed in both common, internal, and external carotid arteries and classified in five levels of vascular occlusion. The modified Rankin Scale (mRS) was used to evaluate the functional outcome at patient discharge. Health records provided information on sociodemographic and medical covariates. The association between CAB and tooth loss, as well as between tooth loss and subtypes of cerebral ischemia were estimated through Poisson regression. Cox regression was carried out to evaluate the association between tooth loss and the mRS, with α = 5%.
Results
Mean age was 65.6 ± 13.8 years, with 52.4% males. Multivariate analyses revealed that severe tooth loss (> 23 missing teeth) was independently associated with CAB ≥ 50% (PR = 2.86, 95% CI = 1.19–6.89) and mRS scores (> 2) (HR = 1.97, 95% CI = 1.10–3.75).
Conclusion
Tooth loss was independently associated with CAB and predicted a poorer functional outcome among IS and TIA patients.
Clinical relevance
Clinical assessment of tooth loss may provide important information on risk for CAB and poorer functional outcome among stroke patients.
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This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Brazil-Finance Code 001.
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Leão TS contributed to the study concept and design, acquisition of data, statistical analysis, analysis and interpretation of data, drafting of the manuscript, and approval of the final version of the manuscript. Tomasi G contributed to acquisition of data, analysis and interpretation of data, and approval of the final version of the manuscript. Ibrahim MS contributed to statistical analysis, analysis and interpretation of data, and approval of the final version of the manuscript. Conzatti L contributed to acquisition of data, statistical analysis, and approval of the final version of the manuscript. Marrone LP contributed to the study concept and design, analysis and interpretation of data, critical revision of the manuscript for important intellectual content, and approval of the final version of the manuscript. Reynolds MA contributed to analysis and interpretation of data, critical revision of the manuscript for important intellectual content, and approval of the final version of the manuscript. Gomes MS contributed to the study concept and design, analysis and interpretation of data, drafting of the manuscript, critical revision of the manuscript for important intellectual content, and approval of the final version of the manuscript. All authors gave their final approval and agreed to be accountable for all aspects of the work.
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Leao, T.S., Tomasi, G., Ibrahim, M.S. et al. Tooth loss is associated with atherosclerosis and a poorer functional outcome among stroke patients. Clin Oral Invest 24, 4541–4548 (2020). https://doi.org/10.1007/s00784-020-03319-z
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DOI: https://doi.org/10.1007/s00784-020-03319-z