FARKLI ENERJİ YOĞUNLUĞUNDAKİ ER:YAG LAZER İLE PÜRÜZLENDİRİLEN DENTİN YÜZEYİNE KOR KOMPOZİTİNİN BAĞLANMA DAYANIMININ İNCELENMESİ

Yıl 2019, Cilt: 29 Sayı: 4, 611 - 617, 15.10.2019

İpek Çağlar Sabit Melih Ateş İşıl Öztürk Zeynep Yeşil Duymuş

https://doi.org/10.17567/ataunidfd.428081

Öz

Amaç: Bu çalışmanın
amacı, farklı enerji yoğunluğundaki Erbium:yittrium-aluminum-garnet (Er:YAG)
lazer ile pürüzlendirilen dentin ile kor kompoziti  arasındaki makaslama bağlanma dayanımını
değerlendirmektir.

Gereç ve Yöntem:
50
adet sağlam daimi alt 1. azı dişinin oklüzal yüzleri aşındırılarak düzgün bir
dentin yüzeyi elde edildi ve uygulanacak yüzey işlemlerine göre rastgele 5
gruba ayrıldı (n=10); kontrol: herhangi bir yüzey işlemi uygulanmadı,  Grup L1: 100 mJ Er:YAG lazer uygulandı, Grup
L2: 150 mJ Er:YAG uygulandı, Grup L3: 200 mJ Er:YAG uygulandı ve Grup L4: 300 mJ
Er:YAG lazer uygulandı. Yüzey işlemlerini takiben her gruptan birer örnek
taramalı elektron misroskobu (SEM) kullanılarak incelendi. Elde edilen dentin
yüzeylerine üniversal bağlayıcı ajan ve 2×3 mm silindirik teflon kalıp yardımı
ile kor kompoziti uygulandı. Kor kompoziti uygulanan örneklere ısısal döngü
uygulandıktan sonra makaslama bağlanma dayanımı üniversal test cihazı
kullanılarak ölçüldü. Sonuçların istatistiksel analizi tek yönlü ANOVA ile
yapıldı ve sonrasında Tukey HSD testi kullanılarak gruplara ait ortalamalar
karşılaştırıldı. Sonuçlar α=0.05 için anlamlı kabul edildi.

Bulgular: Grup L1 (10.48 ±
1.58 MPa) ve Grup L2 (9.76 ± 1.01 MPa), diğer tüm gruplara göre istatistiksel
olarak anlamlı şekilde daha yüksek makaslama bağlanma dayanımı değerleri
gösterdi (p<0.05). Grup L4 örnek yüzeylerinde çatlak ve erime olduğu
görüldü.

Sonuç: Kor kompozitinin
bağlantısını güçlendirmek amacı ile dentin yüzeyinde kullanılabilecek en uygun Er:YAG
lazer enerji yoğunluğu 100 mJ ve 150 mJ’dür.

Anahtar Kelimeler:
Makaslama
Bağlanma Dayanımı, Er:YAG Lazer, Kor Kompoziti, Üniversal Bağlayıcı Ajan

EVALUATION OF
THE BOND STRENGTH OF CORE COMPOSITE TO ER:YAG PRETREATED DENTIN SURFACE WITH
VARIOUS ENERGY DENSITIES

ABSTRACT

Aim: The aim of this
study was to evaluate the shear bond strength of pretreated dentin with various
Erbium:yittrium-aluminum-garnet (Er:YAG) laser energy densities to core
composite.

Material and methods: Fifty intact inferior permanent first
molar teeth were ground to produce a flat dentin surface and randomly divided
into 5 groups according to the surface treatments (n=10); control: no surface
treatment, group L1: 100 mJ Er:YAG laser
irradiation, group L2: 150 mJ Er:YAG laser irradiation, group L3: 200
mJ Er:YAG laser irradiation, group L4: 300 mJ Er:YAG laser irradiation. Following the surface treatments, one
specimen of each group were examined by scanning electron microscopy (SEM). Then,
universal bonding agent was applied to all treated dentin surface and core
composite was built up by using a 2×3 mm cylindrical teflon mold. All
specimens were subjected to thermal cycling before the shear bond strength test
by universal testing machine. The data were analyzed by using one-way ANOVA and
Tukey HSD tests for the comparison of mean shear bond strength values. Results
were considered significant for α=0.05.

Results:
Group L1 (10.48
± 1.58 MPa) and group L2 (9.76
± 1.01 MPa) showed significantly higher shear
bond strength values than the other groups (p<0.05). Melting and surface cracks was
observed in group L4.

Conclusion:
The optimal Er:YAG laser energy
densities for enhanced bonding of core composite to dentine surface is 100 mJ
and 150 mJ.

Key
words: Shear Bond Strength, Er:YAG Laser, Core
Composite, Universal Bonding Agent

Anahtar Kelimeler

Makaslama Bağlanma Dayanımı, Er:YAG Lazer, Kor Kompoziti

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