There were increaseds in plaqueindex(PLI) and gingival index (GI) value in the control group, compared to the study group, due to the self cleaning during qat(Catha edulis forsk) habit; but PLI and GI were more value in group II more than group III due to increased qat chewing daily frequency and self cleansing in group III more than group II. (Check the grammar and Rreframe the sentence.) On the other hand, the clinical attachment level (CAL) value wereas higher in study groups patients than control group patients due to the traumatic effect of qat(Catha edulis forsk) chewing habit against periodontal tissues, and it was more in group III than group II due to increased qat chewing daily frequency in group III than group II. In table (3) and figure (4), there was increased chronic inflammatory cells numbers in control group patients more than study groups, due,to increased amount of bacterial plaque, but it was more in group II than group III patients.