Sevinç AKTEMUR TÜRKER, Fatma Zühal YURDAGÜL

Does The Vehicle Type Affect the Persistence of Calcium Hydroxide When Removing with Sonic Activation?

Background: This in vitro study aimed to evaluate the persistence of calcium hydroxide (CH) associated with different vehicles on the artificial cavities after removing with sonic activation or conventional needle irrigation (CNI). Methods: Seventy-two extracted single-rooted teeth were instrumented with ProTaper Universal rotary system up to F4. The roots were split longitudinally, and standardized cavities were prepared. The roots were assigned into 3 groups (n=24), according to vehicles used; distilled water, glycerin, and propylene glycol. In each group, cavities were filled with CH mixed with the respective vehicle. After reassembly, the removal of CH dressing was performed with either sonic activation (EDDY) or CNI (n=12). The remnants of CH were assessed under a microscope at ×40 magnification. A four-grade scoring system was used to evaluate. Kruskal-Wallis and Mann-Whitney U-tests were used to compare the data. Results: There was a significant difference among groups (p=0.000). Complete removal of CH was found in the distilled water and propylene glycol groups when EDDY was used. EDDY was significantly more effective than CNI in the removal of CH mixed with distilled water and propylene glycol p=0.001 and p=0,002, respectively. Whereas no significant difference was found between EDDY and CNI in the glycerin group (p=0.219). The lowest CH remnants were found in the distilled water group when CNI was used. Conclusion: The vehicle associated with CH and irrigation activation is important for its retrieval. EDDY provided the complete removal of CH when mixed with distilled water or propylene glycol.

Taşıyıcı Tipi Sonik Aktivasyon Ile Uzaklaştırıldığında Kalsiyum Hidroksitin Kök Kanal Duvarlarındaki Devamlılığını Etkiler Mi?

Amaç: Bu in vitro çalışma farklı taşıyıcılarla ilişkili kalsiyum hidroksitin (KH) yapay olarak oluşturulmuş kavitelerden sonik aktivasyon veya geleneksel iğne irrigasyonu (Gİİ) kullanılarak uzaklaştırılmasından sonra devamlılığını değerlendirmeyi amaçlamaktadır. Gereç ve Yöntemler: 72 adet çekilmiş tek köklü dişler ProTaper Universal döner eğe sistemi ile F4’e kadar genişletildi. Dişler uzunlamasına kesilerek standart kaviteler açıldı. Kullanılan taşıyıcı tipine göre kökler 3 gruba ayrıldı (n=24); distile su, gliserin ve propilen glikol. Her bir grupta, kaviteler bu taşıyıcılardan biriyle karıştırılan kalsiyum hidroksitle dolduruldu. Kök parçalarının tekrar birleştirilmesinden sonra kalsiyum hidroksitin uzaklaştırılması ya sonik aktivasyon (EDDY) ya da Gİİ ile yapıldı (n=12). Kalan KH artıkları bir mikroskop kullanılarak x40 büyütme ile değerlendirildi. Değerlendirme için 4-skorlu skala kullanıldı. Kruskal-Wallis, Mann-Whitney U testleri verileri karşılaştırmak için kullanıldı. Bulgular: Gruplar arasında anlamlı fark bulundu (p=0.000). EDDY kullanıldığında, distile su ve propilen glikol ile karıştırılan KH’in tamamen uzaklaştırıldığı bulundu. EDDY, distile su ve propilen glikol ile karıştırılan KH’i uzaklaştırmada, Gİİ’den daha etkili bulundu p=0.001 ve p=0,002, sırasıyla. Fakat gliserin ile karıştırılan KH’i uzaklaştırmada EDDY ve Gİİ arasında fark bulunmadı (p=0.219). Gİİ kullanıldığında kalan KH artıkları en az distile su grubunda bulundu. Sonuç: KH ile ilişkili taşıyıcı tipi ve yıkama solusyonunun aktivasyonu uzaklaştırılmasında önemlidir. EDDY distile su veya propilen glikol ile karıştırılan KH’in tamamen uzaklaştırılmasını sağlamıştır.

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