Định lượng vi khuẩn porphyromonas gingivalis trong viêm nha chu bằng kỹ thuật realtime PCR

Nghiên cứu được tiến hành nhằm đánh giá sự thay đổi số lượng vi khuẩn Porphyromonas gingivalis (P.gingivalis) trong khe nướu của bệnh nhân viêm nha chu thể mạn tính và thể tấn công. Kỹ thuật realtime PCR được ứng dụng để định lượng vi khuẩn p.gingivalis trong dịch khe nướu tại vị trí lành và vị trí bị bệnh trên 5 bệnh nhân viêm nha chu thể mạn tính, 5 bệnh nhân viêm nha chu thể tấn công; trong dịch khe nướu trên nhóm người bình thường (nhóm chứng). Két quả cho thấy, trên nhóm viêm nha chu mạn tính và nhóm viêm nha chu tấn công, số lượng p. gingivalis ở vị trí bệnh trong dịch khe nướu làn lượt là 25,10 ± 4,68 chu kỳ ngưỡng (Ct) và 22,89 ± 4,63 ct, khác biệt có ý nghĩa thống kê so với ở nhóm chứng là 33,93 ± 3,17 ct và 34,38 ± 2,96 ct (p < 0,05 và p < 0,01). p. gingivalis là vi khu ẩn thường gặp trong viêm nha chu ở thể mạn tính và thể tấn công (100%); mặc dù có mặt khá phổ biến trong dịch khe nướu ở người bình thường, số lượng p. gingivalis trong trong dịch khe nướu ở nhóm viêm nha chu cao hơn có ý nghĩa so với ở nhóm chứng (p < 0,05).

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