OBJECTIVE: This study was carried out to relate periodontal status to the oral lesions in patients with oral lichen planus (OLP). MATERIALS AND METHODS: Periodontal status was evaluated in 90 patients with OLP and in 52 controls, in terms of the plaque index (PII), simplified calculus index (CIS) and periodontal disease index (PDI). RESULTS: No significant differences were observed between the two groups as regards the different periodontal indices. The plaque and calculus indices were higher in the more extensive forms of OLP (P ؍ 0.02 and P ؍ 0.012, respectively), and in the presence of gingival involvement (P ؍ 0.004 and P ؍ 0.04). A significant association was also observed between the presence of atrophic-erosive lesions and increased periodontal deterioration (P ؍ 0.037). CONCLUSIONS: Increased plaque and calculus deposits are associated to a significantly higher incidence of atrophic-erosive gingival lesions in patients with OLP.
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