The aim of this study is to investigate the association between oral lichen planus (OLP) and a variety of systemic conditions, medication, and supplement usage.
156 patients diagnosed with OLP and 156 controls at Columbia University Irving Medical Center from 2000-2013 were selected as part of the matched (1:1) case-control study. Demographics, systemic conditions, prescription medications and supplements were extracted from the patients’ medical records. A univariable conditional logistic regression (CLR) analysis was performed to calculate unadjusted-odds ratio, to identify significant variables associated with OLP (p<0.10). Significant variables were further tested using multivariable CLR analysis with both forward and backward selection to calculate adjusted-odds ratio (aOR) and further distinguish variables associated with OLP (p<0.05).
This analysis identified six significant variables: thyroid disorder (aOR:5.1,95%CI:2.3-11.2), any form of cancer (aOR:3.4,95%CI:1.4-8.4), type 2 diabetes (aOR:2.8,95%CI:1.2-6.3), hyperlipidemia (aOR:2.3,95%CI:1.3-4.1), oral sedative usage (aOR:6.3,95%CI:1.8-22.5), and vitamin-D supplementation (aOR:2.7,95%Cl:1.3-6.0).
Thyroid disorders, cancer, type 2 diabetes, hyperlipidemia, sedatives, vitamin D supplementation, and were found to be associated with OLP. Additional investigation is required to explore these associations, which could shed light on the potential mechanism of OLP and reinforce the idea that oral lesions could be predicative of previously undetected systemic conditions.

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