Evaluation of Antibacterial Effect against <i>Porphyromonas gingivalis</i> and Biocompatibility of Essential Oil Extracted from the Gum of <i>Pistacia atlantica Kurdica</i>.

In control group the raising of inflammatory reaction surrounding the open tube by increasing the mean numbers and scores of polymorphonuclear inflammatory with scores 1 and 0 for neutrophil (4.800±2.65) and eosinophil (2.00±1.15), respectively, was demonstrated, but the differences were significant only for eosinophil; mononuclear inflammatory cells showed a highly significant with scores 3, 0, and 3 for the lymphocytes, plasma, and macrophages cells in the first week, whereas the mean number of the inflammatory cells in the tetracycline-treated group was maintained on the same level with exception of eosinophil increased to 4.20±3.55, and the plasma cells slightly decreased (1.50±1.26), while the scores for the each cells were 1 and 1 for the polymorphonuclear cell and 3, 0, and 3 for the mononuclear inflammatory cells that showed significant effect.

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