Objective: This study aimed to compare various activation techniques for removing organic tissue from simulated internal resorption cavities, utilizing sodium hypochlorite (NaOCl) at both intracanal heated and room temperature. Material and Methods: A total of 120 mandibular premolar teeth were horizontally divided into two parts, and internal resorption cavities were created in each part. Bovine muscle tissue samples were inserted into resorption cavities. Roots were reassembled, and teeth divided into two groups (n=60) by irrigation temperature (room temperature, intracanal heated). Each of the two groups was further divided into 5 subgroups for irrigation activation purposes: standard needle irrigation (SNI), EndoActivator (EA), EDDY, passive ultrasonic irrigation, XP-endo Finisher (XPF). After irrigation protocols, organic tissue remnants in resorption cavities were scored and differences among tissue removal scores were analyzed. Results: XPF demonstrated superior organic tissue removal compared to SNI in both room temperature and intracanal heated NaOCl groups. All activation groups showed no significant difference in the efficacy of organic tissue removal between NaOCl at room temperature and when heated intracanal. Conclusion: The XPF was found to be the most effective method for removing organic tissue from internal resorption cavities. Intracanal heating NaOCl did not have any significant effect on removing organic tissue from internal resorption cavities.
Keywords: Sodium hypochlorite; root canal irrigants; root resorption
Amaç: Bu çalışma ile simüle edilmiş internal rezorpsiyon kavitelerinden organik dokunun uzaklaştırılması için hem kanal içinde ısıtılan hem de oda sıcaklığındaki sodyum hipoklorite (NaOCl) uygulanan aktivasyon tekniklerinin karşılaştırılması amaçlanmıştır. Gereç ve Yöntemler: Toplamda 120 mandibular premolar diş yatay olarak 2 parçaya bölünmüş ve her parçaya internal rezorpsiyon kaviteleri oluşturulmuştur. Rezorpsiyon kavitelerine sığır kas dokusu yerleştirilmiş ve kökler tekrar birleştirilmiştir. Dişler, irrigasyon sıcaklığına göre 2 gruba (n=60) ayrılmıştır (oda sıcaklığı, intrakanal ısıtma). Her iki grup, irrigasyon aktivasyon yöntemlerine göre 5 alt gruba ayrılmıştır: standart iğne irrigasyonu [standard needle irrigation (SNI)], EndoActivator (EA), EDDY, pasif ultrasonik irrigasyon, XP-endo Finisher (XPF). İrrigasyon protokollerinden sonra rezorpsiyon kavitelerinde kalan organik doku kalıntıları değerlendirilmiş ve doku uzaklaştırma skorları arasındaki farklar analiz edilmiştir. Bulgular: XPF hem oda sıcaklığındaki hem de intrakanal ısıtılmış NaOCl gruplarında SNI'ya kıyasla daha üstün organik doku uzaklaştırma performansı göstermiştir. Tüm aktivasyon gruplarında, NaOCl'nin oda sıcaklığı ve intrakanal ısıtma arasındaki organik doku uzaklaştırma etkinliği açısından anlamlı bir fark bulunmamıştır. Sonuç: XPF internal rezorpsiyon kavitelerinden organik doku uzaklaştırmada en etkili yöntem olarak bulunmuştur. NaOCl'nin kanal içi ısıtılmasının internal rezorpsiyon kavitesinden organik doku uzaklaştırılması üzerinde önemli bir etkisi olmamıştır.
Anahtar Kelimeler: Sodyum hipoklorit; kök kanalı sulayıcıları; kök rezorpsiyonu
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