In the present experimental study, it was investigated the periodontium of rats that exposed to Extremely Low Frequency-Magnetic Field (ELF-MY), overectomized bilaterally and treated with Strontium Ranelate (SR). The experiments were performed on 75 female Sprague-Dawley (4 months) rats. The rats were divided into five groups (n = 15). All rats were subjected to bilateral ovariectomy except those in I and III groups. Bilateral ovariectomy was performed before 4 days at the beginning of the experiments under ketamine anesthesia (100 mg kg(-1), intramuscularly) and II, IV and V groups animals were subjected to 1.5 mT ELF-MT exposure during 6 months, 4 h a day starting 5th day after the surgery. There were statistically significant differences among the all groups in the case of periodontal ligament, alveolar bone and gingiva (p<0.05). As a result of the study there were different levels of histopathologic changes occured between control and experimental changes in the case of all periodontal tissue examination. These results may hypothese that both ELF-MF and Strontium renalate have effects on periodontal tissues.