Eğimli Kök Kanallarında Dört Farklı Döner Alet Sisteminin Şekillendirme Yeteneklerine Farklı Apikal Boyutların Etkisinin Değerlendirilmesi

Abstract

Giriş: Mekanik şekillendirme kök kanal tedavisinin önemli bir basamağıdır. Etkili dezenfeksiyon amacıyla apikal genişletme önerilmektedir. Bu çalışmanın amacı, PTG, PTN, RS ve BR döner alet sistemlerinin 40 apikal uç boyutuna kadar olan eğelerinin eğimli kök kanallarındaki şekillendirme yeteneklerini incelemektir.

Materyal ve Metot: Çalışmada, mandibular molar dişe ait 60 adet MB kanalın mekanik şekillendirme işlemi öncesinde KIBT görüntüsü alındı ve kanal eğim açıları hesaplandı. Sonra örnekler açılarına göre, randomize olarak 4 gruba ayrıldı (n=15) ve 40 apikal uç boyutuna kadar şekillendirildi. Şekillendirme sırasında her eğeden sonra KIBT görüntüsü alındı ve kanalların başlangıç açılarına göre açısal değişimleri hesaplandı. İstatistiksel anlam düzeyi p=0.05 olarak belirlendi.

Bulgular: Apical uç boyutu arttıkça kök kanal eğimlerinde düzleşme gözlendi.25 apikal uç boyutundaki aletler karşılaştırıldığında; RS ve BR(25/04) kök kanallarında PTG’ye göre daha az oranda kök kanallarını düzleştirirken, PTN ve BR(25/06)’nın diğer sistemlerden daha fazla oranda düzleşmeye neden olduğu belirlendi. 30 apikal uç boyutundaki aletler karşılaştırıldığında; RS’nin en az, PTN’nin ise en çok düzleşmeye neden olduğu tespit edildi. 40 apikal uç boyutundaki aletler karşılaştırıldığında; PTG ve RS, PTN ve BR'den(40/02)daha az düzleşmeye neden olurken,BR(40/04)’nin en fazla düzleşmeye neden olan eğe olduğu belirlendi.

Sonuç: Bu çalışmada incelenen tüm sistemler, apikal boyut arttığında daha fazla düzleşmeye neden olmaktadır. PTG ve RS diğer sistemlere göre daha umut verici sonuçlar ortaya koyarken, sonuçların taper ve uç boyutuna göre değişiklik gösterdiği ifade edilebilir.

Keywords

• Kök kanallarında düzleşme
• Mekanik şekillendirme yeteneği
• ProTaper Gold

Evaluation of The Effect Of Apical Diameter On The Shaping Abilities of Four Different Rotary İnstrument Systems İn Curved Root Canals

Abstract

İntroduction: Mechanical preparation is an important step of root canal therapy. Apical enlargement is recommended for effective disinfection.The aim of this study is to compare the shaping ability of PTG, PTN, RS and BR rotary file systems in curved canals up to the apical file size to 40
Material and Method: Before root canal instrumentation, pre-instrumented CBCT images of 60 MB canals of mandıbular molar teeth were taken and canals curvature angles were calculated. The samples were randomly divided into four groups (n=15),and instrumented up to the apical size 40. Changes in canal curvatures were measured after each file used in post-instrumented images. Statistical analysis was performed with the significance level set at p=0.05.
Results: As the apical tip size increased root canals were straightened significantly. In the apical size 25;RS and BR(25/04) were found to straighten the canal curvatures less than PTG whereas, PTG caused less straightening than PTN and BR(25/06). In the apical size 30; RS caused less straightening whereas PTN was the most. In the apical size 40; PTG and RS caused less straightening than PTN and BR(40/02), BR(40/04) caused the most straightening.
Conclusions: While all of the treatments in this study straightened the root canals as the apical size increased, and PTG and RS showed promising outcomes, the results differed depending on the taper and tip size.

Keywords

• Canal straightening
• Shaping abilities
• ProTaper Gold

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