TY  - JOUR
TT  - EVALUATION OF 2 NICKEL-TITANIUM INSTRUMENT SYSTEMS IN SHAPING ROOT CANALS
AU  - Yaşar, Şenay
AU  - Erşahan, Şeyda
AU  - Aydın, Cumhur
PY  - 2019
DA  - July
DO  - 10.17567/ataunidfd.471219
JF  - Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi
JO  - Ata Diş Hek Fak Derg
PB  - Ataturk University
WT  - DergiPark
SN  - 1300-9044
SP  - 400
EP  - 406
VL  - 29
IS  - 3
LA  - en
KW  - Twisted File
KW  - RaCe
KW  - Curved root canals
KW  - Canal transportation
KW  - Centering ability
N2  - Evaluation of 2 Nickel-Titanium Instrument Systems inShaping Root Canals AbstractObjective: To evaluate root canal enlargement following mechanical shaping using 2nickel titanium rotary systems in simulated curved canals.Material and Method: Thirty simulated canals inresin blocks were divided into two experimental groups, each comprising 15resin blocks, and prepared with Twisted files (TF) and RaCe rotary files using crown-down technique. Preoperativeand postoperative photographs, taken using a digital camera, were superimposedand aberrations were recorded. The amount of resin removed was measured at 11different points, beginning at the apical terminus of the canal. Instrumentfailure, outer and inner width measurements, transportation rate, and centeringability were recorded on each central canal path and differences between groupswere statistically analyzed using Student’s t test.Results: No instrumentfracture occurred during preparation. RaCe instruments removed more materialfrom the outer canal walls in the apical section (p < 0.01) and from theinner canal walls in the middle section (p < 0.01) of the canals compared toTF. However, canals prepared with TF instruments resulted in lesstransportation (p < 0.05) in the middle section. No significant differenceswere found between the two groups in terms of centering ability in apical,middle, or coronal sections. (p >0.05).Conclusions: RaCe instrumentsremoved more resin from the outside of the apical curvature and from the inner sideof the coronal curvature compared to TF. In addition, mean transportationamount was significantly high for RaCe in middle section (i.e., coronalcurvature). Regarding canal centering ability, however, both instrumentsretained original canal geometry and performed similarly. Key words: Twisted File, RaCe, Curvedroot canals, Canal transportation, Centering ability, Ni-Ti rotarysystemsKökKanallarını Şekillendirmesinde İki Nikel Titanyum Alet SistemininDeğerlendirilmesiAmaç: Simüle edilmişeğri kanallarda 2 nikel titanyum döner alet sistemi kullanılarak mekanikşekillendirme sonrası kök kanal genişlemesinin değerlendirilmesi.Gereçve Yöntem: Reçine bloklardaki otuz adet simüleedilmiş kanal, her biri 15 adet rezin bloğu içeren iki deney grubuna ayrıldı veTwisted files (TF) ve RaCe döner eğeleri kullanılarak crown-down tekniğiyleşekillendirildi. Bir dijital kamerakullanılarak çekilen preoperatif ve postoperatif fotoğraflar çakıştırıldı ve sapmalarkaydedildi. Kaldırılan rezin miktarı, kanalın apikal sonlanmasından başlayarak11 farklı noktada ölçülmüştür. Her bir kanal yolundaki dış ve iç genişlikölçümleri, transportasyon oranı, merkezde kalma yeteneği ve alet kırığıkaydedildi ve gruplar arasındaki farklar Student t testi kullanılarakistatistiksel olarak analiz edildi.Bulgular: Preparasyon sırasında alet kırılmasımeydana gelmedi. RaCe eğeleri TF’e kıyasla kanalların apikal kısımdaki dışkanal duvarlarından (p <0.01) ve orta kesitindeki iç kanal duvarlarından (p<0.01) daha fazla materyal kaldırdı. Ancak, TF eğeleriyle hazırlanankanallarda orta kısımda daha az transportasyon görüldü (p < 0.05). İki grup arasında, apikal, orta veya koronalkesitlerde merkezde kalma yeteneği açısından anlamlı fark bulunmadı (p >0.05).Sonuçlar: RaCe eğeleri TF’e kıyasla, apikalkurvatürün dışından ve koronal kurvatürün iç kısmından daha fazla rezin kaldırmıştır.Ek olarak, ortalama transportasyon miktarı orta kısımda RaCe için anlamlıderecede yüksekti (yani koronal eğrilik). Bununla birlikte kanalın merkezindekalma yeteneği ile ilgili olarak, her iki enstrüman da orijinal kanalgeometrisini korudu ve kanalı benzer şekilde şekillendirdi.Anahtar kelimeler: Twisted File, RaCe, Eğri kök kanalları, Kanal transportasyonu, Merkezde kalma yeteneği, Ni-Ti döner alet sistemleri
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UR  - https://doi.org/10.17567/ataunidfd.471219
L1  - https://dergipark.org.tr/en/download/article-file/782311
ER  -