Topographic Relationship Of Maxillary Sinus Floor With The Posterior Teeth Roots Using Panoramic Radiography And Cone Beam Computed Tomography (CBCT)

Background: The relation of maxillary posterior teeth roots to the maxillary sinus floor is important for diagnosing and planning of many surgical procedures. The anatomical proximity of the root apices of the maxillary posterior teeth to the maxillary sinus floor may favor the development of inflammatory, infectious and/or traumatic alterations in the maxillary sinus. Objective: To correlate the topographic relationship of the maxillary sinus floor to the posterior teeth roots using panoramic radiography and cone beam computed tomography (CBCT). Methods: Panoramic and CBCT images of 30 patients were analyzed. The relationship between the posterior teeth and the maxillary sinus and panoramic radiography signs associated with protrusion of root apices into the sinus were evaluated following Kwak et al. (2004) classification. Results: The OPG showed statistically significant (P>0.001) longer root projection in the sinus cavity in comparison with the root protrusion into the sinus measured by using CBCT images. It was found that cbct was statistically more significant than OPG. Given the limitations of panoramic radiography being a 2D radiography. Conclusion: CBCT is reliable in assessment of topographic relationship of maxillary sinus floor with the posterior teeth in comparision with panoramic radiography CBCT is indicated to provide the information about the relation to the maxillary sinus floor when there is protrusion detected in panoramic images.

Prevalence of Hepatitis C Virus in Oral Lichen Planus and the Levels of Aminotransferase Hepatic Enzymes in Patients with Oral Lichen Planus

Background: Oral lichen planus (OLP) is a relatively common skin and oral disease that manifests as a mucous reaction to a variety of etiologic factors, including autoimmune disease, drug reaction, diabetes mellitus (DM), hypertension, hepatitis C virus (HCV), urolithiasis, psychogenic factors, and bacterial infection. It is one of the most frequent oral lesion found in patients with hepatitis C virus (HCV) infection. Objective: The purpose of this study was to investigate the relationship between HCV infection and OLP as there is a high prevalence of HCV infection in India, and to assess the levels of aminotransferase enzymes (SGPT/SGOT) in patients with OLP. Methods: The study consisted of 25 histopathologically confirmed patients of OLP and 25 subjects with age and sex matched healthy volunteers visiting the outpatient department of a dental hospital over a period of 1 year. All subjects in both groups were subjected to serum glutamic oxaloacetic transaminase (SGOT), serum glutamic pyruvic transaminase (SGPT) and HCV antibodies detection. Results: The average HCV antibody between study and control group was statistically nonsignificant with p=0.965. The percentage of patients with elevated SGOT and SGPT values was higher among the OLP patients in the study group ((32.0%) i.e. >45 IU/L) in comparison to subjects in the control group (0%). Hence, SGOT and SGPT value was statistically significant (p value= 0.002). Conclusion: OLP in certain populations can be used as a marker for HCV infection in addition to transaminase hepatic enzymes level.