introduction: due to penetration of pathogenic bacteria into the periodontal tissues in moderate to severe periodontitis, the mechanical methods are not sufficient in these cases. therefore, administration of local/systemic antibiotic is recommended following mechanical root debridement. however, side effects of antibiotics such as microbial resistance and patient allergy led to development of ...

objective: the aim of this study was to find out the prevalence of hypozincemia in patients suffering from tinnitus and to investigate the effect of zinc therapy upon the severity of tinnitus. material and methods: we studied 66 who suffered from tinnitus, which were randomized to two groups according to the zinc level including < 50μg/dl and > 50μg /dl groups. the zinc level was measured in no...