Background: Fissured Tongue (FT) is a benign asymptomatic disorder manifested with grooves that can vary in size and depth on the dorsum of the tongue. The prevalence of FT worldwide has been reported to be as high as 30.5%. Aim: The present study was designed to determine the prevalence of FT among the Libyan population and also to evaluate its association with age, gender, burning symptoms and some medical conditions.

Background: tongue lesions are reflecting many systemic diseases of the body. Despite the relative frequency of Median Rhomboid Glossitis (MRG), its exact etiopathogenesis is controversial. A direct association between tongue lesions including MRG and oral candidiasis, tobacco smoking, denture wearing, and systemic conditions such as diabetes mellitus (DM) has been reported. Objective: The objective of this present study was performed to determine the prevalence of MRG among Libyan diabetic and non-diabetic patients (NDPs), and hence detect and estimate the possible associations. Method: The sample was made of 928 patients, divided into 2 groups. Group1 consist of 464 diabetic patients (DPs), while group 2 consists of 464 NDPs as a control group. Results: the prevalence of MRG in all diabetic cases was (12%) whilst in NDPs was 3.4%. MRG was present in 56 DPs 39 (70%) were males and 17(30%) were females. There was a significant association between MRG and burning sensation P < 0.001. Conclusion: MRG among Libyan patients was significantly more prevalent in DPs than in NDPs.