RATLARDA DENEYSEL OLARAK BİFOSFONATA BAĞLI ÇENE OSTEONEKROZU OLUŞTURULMASI

Öz

Bifosfonat türevi ilaçlar, kemik metabolizması bozukluğu ile ilişkili birçok hastalıkta kullanılmaktadır. Bu ilaçların kullanımı sonrası gelişen ciddi yan etkilerden biri de bifosfonata bağlı çene osteonekrozudur. Bu çalışmada, ratlara bifosfonat uygulaması ve diş çekimi sonrası çene kemiklerinde osteonekroz oluşturulan hayvan modeli sunulmuştur. Çalışmamızda Wistar Albino ırkı 24 adet dişi rat 2 gruba ayrılmıştır. 1. gruptaki ratların (n=12) alt çene sol birinci ve ikinci molar dişleri çekildikten sonra alveol kemiğinde defekt oluşturulmuştur. 2. gruptaki ratlara (n=12) 0.1mg/kg zoledronat 8 hafta boyunca haftada 3 kez intraperitonel olarak uygulanmış ve bu sürenin sonunda ilk gruba uygulanan aynı cerrahi işlemler gerçekleştirilmiştir. Hayvanlar sakrifiye edilerek diş çekim bölgesi klinik, histolojik ve radyolojik olarak değerlendirilmiştir. Bu çalışmanın sonuçlarında, radyolojik açıdan 2. grubun defekt hacmi değeri ortalamasının 1. grubunkinden istatistiksel olarak anlamlı derecede daha geniş olduğu tespit edilmiştir. (p<0,05). 1. gruptaki hiçbir hayvanda klinik olarak nekrotik kemik oluşumu gözlenmemiştir. Ancak, 2. gruptaki deneklerin %45 ‘inde nekrotik kemik varlığı izlenmiştir. Sonuç olarak, ratlara zoledronik asitin uygulanması sonrası diş çekimi ile osteonekroz gelişen hayvan modeli oluşturulabilir

Anahtar Kelimeler

• Bifosfonat, alveol defekti, osteonekroz.

Experimental Development of Bisphosphonate Induced Osteonecrosis of The Jaws in Rats

Öz

Bisphosphonates are used for the treatment of diseases associated with bone metabolism disorders. One of the serious side effects due to the usage of this kind of drugs is the bisphosphonate related osteonecrosis of the jaws. In this study, we present an animal model in rats which were treated with bisphosphonate and developed osteonecrosis of jaw bones after dental extraction. 24 Wistar Albino female rats were divided randomly into 2 groups. In group 1 (n=12), mandibular left molars extraction and alveolar bone defects were established in the same region. In group 2 (n=12), 0.1mg/kg zoledronate, during a-8-week period for 3-times in a week was intraperitoneally injected, afterwards rats were underwent the same surgical procedure as in group 1. At the end of this period, animals were sacrificed for radiological, histological and clinical evaluations. As a result, the mean value of volume defects in group 2 was found significantly larger than the values of group 2 in radiologic aspect (p<0,05). Clinically, necrotic bone formation was not observed in any of the animals in group 1, whereas necrotic bone formation was observed in 45% of the animals in group 2. In conclusion, an animal model can be developed by administering zoledronic acid with dental extraction in rats.

Anahtar Kelimeler

• Bisphosphonates, alveolar defect, osteonecrosis.

Kaynakça

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