Dentinal crack formation after root canal preparation: Rotary versus reciprocal instrumentation

Year 2018, Volume: 5 Issue: 2, 111 - 116, 01.08.2018

Hale Arı Aydınbelge , Mine Özçelik Yılmaz

https://doi.org/10.15311/selcukdentj.337931

Abstract

Background: The aim of this investigation was to compare the
incidence of dentinal crack after preparation with reciprocating (Reciproc
and WaveOne) and full-sequence rotary (ProTaper Next and ProTaper Universal)
instruments.

 

Methods: Seventy-five mandibular central incisors were
selected and stored in distilled water until use. Fifteen unprepared teeth were
served as a negative control group and the remaining 60 teeth were prepared by
using full-sequence rotary and reciprocating instruments. After preparation,
the teeth were horizontally sectioned at 3, 6 and 9 mm from the apex with a
low-speed saw under water-cooling. All slices were viewed through a
stereomicroscope and pictures were taken. The presence of dentinal crack was
noted and analyzed by used the chi-square test.

 

Results: The control group had no dentinal crack. All root
canal preparation with both rotary and reciprocating instruments resulted in
dentinal crack. In the 3 mm section PU produced significantly more dentinal
crack than the other groups. The PN group produced significantly more dentinal
crack in the 6 mm sections than the other sections.

 

Conclusion: All the instruments used in the study were
related to the formation of cracks in the canal walls.

Keywords

Dentinal crack, ProTaper, reciprocal, rotary instrument

Dönme ve resiprokal hareket yapan eğe sistemlerinin kök kanal tedavisi sonrası dentin çatlağı oluşumuna etkisi

Abstract

Amaç: Bu
çalışmanın amacı resiprokal ve dönme hareketi yapan eğe sistemlerinin
preparasyon sonrası dentin çatlağı oluşumuna etkilerinin kıyaslanmasıdır.

 

Gereç ve Yöntemler: 75
adet mandibular santral kesici diş seçilmiş ve distile su içerisinde çalışmada
kullanılıncaya kadar muhafaza edilmiştir. 15 adet diş preparasyon yapılmaksızın
negatif kontrol grubu olarak ayrılmış, geri kalan 60 diş dönme ve resiprokal
hareketi yapan sistemler kullanılarak prepare edilmiştir. Sonrasında bütün
dişlerden, apekslerinden itibaren 3, 6, 9 mm mesafelerden su soğutması altında
düşük hızlı testere ile yatay olarak kesitler alınmıştır. Bütün kesitler
stereomikroskop yardımı ile incelenmiş ve görüntüler kaydedilmiştir. Üzerinde
çatlak bulunan dişler not edilmiş ve ki-kare testi kullanılarak analiz
edilmiştir.

 

Bulgular: Kontrol
grubundaki örneklerin hiçbirinde çatlak yoktu. Prepare edilen diğer gruplarda
ise çatlak varlığı tespit edildi. 3 mm’lik kesitlerde PU grubunda diğer
gruplara kıyasla daha fazla çatlak tespit edildi. PN grubunun 6 mm’lik
kesitinde diğer kesitlerine kıyasla daha fazla çatlak tespit edildi.

 

Sonuç: Bu
çalışmada kullanılan bütün eğe yöntemlerinin kanal duvarlarında çatlak
oluşturduğu tespit edilmiştir.

Keywords

Dentin çatlağı, ProTaper, resiprokal, dönen alet

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