Farklı yüzey işlemlerinin zirkonyanın ağız içi tamirine etkisi

Year 2017, Volume: 4 Issue: 2, 52 - 58, 28.07.2017

Pınar Çevik , Daime Cengiz

https://doi.org/10.15311/1441.306095

Abstract

Amaç: Bu
çalışmanın amacı, zirkonya yüzeyine uygulanan farklı yüzey işlemlerinin
yaşlandırma sonrası kompozit rezin ve zirkonya arasındaki makaslama bağlanma
dayanımına etkisini incelemektir.

Gereç ve Yöntem: 40
adet sinterlenmiş zirkonya örnek (19x15x2 mm) dört farklı yüzey işlemi grubuna
ayrıldı (n=10): Grup 1, elmas frez ile aşındırma; Grup 2, 30 µm Al₂O₃
ile tribokimyasal silika kaplama; Grup 3, 50 µm Al₂O₃ ile
kumlama ve Grup 4, 110 µm Al₂O₃ ile kumlama grubu. Yüzey
işlemi gören zirkonya örneklere adeziv fosfat monomeri uygulanıp polimerize
edildi. Kompozit rezin polimerizasyonunu takiben örnekler termal yaşlandırmaya
(x1000, 5-55 °C, 30 saniye) tabi tutuldu. Örneklere hızı 0.5 mm/dakika olan
üniversal test cihazı ile makaslama bağlanma dayanımı testi uygulandı. Test
sonrası kırılma tipleri adeziv veya karma tip başarısızlık olarak kaydedildi.
İstatistiksel analiz tek yönlü varyans analizi (ANOVA) ve Tukey HSD testleri
kullanılarak yapıldı (p<0.05).

Bulgular: ANOVA
sonuçlarına göre gruplar arası makaslama bağlanma dayanımı değerleri
istatistiksel olarak anlamlı bulunmuştur (p<0.05). Bağlanma dayanımı
değerleri her bir grup için sırasıyla: Grup 1 (21.51±1.72), Grup 2
(28.44±3.91), Grup 3 (19.93±2.31), Grup 4 (23.38±4.35) Megapaskal olarak
kaydedilmiştir. Tüm gruplar arası en yüksek bağlanma dayanımı değeri
tribokimyasal silika kaplama grubunda (p<0.05) olup Grup 1, 3 ve 4 arasında
istatistiksel olarak anlamlı bir fark bulunamamıştır (p>0.05). Tüm gruplarda
adeziv tip başarısızlık gözlenmiştir.

Sonuç: Tüm
gruplar klinik olarak kabul edilebilir bağlanma dayanımı değerleri
göstermiştir. Bununla birlikte tribokimyasal silika kaplama yönteminin zirkonya
ile kompozit rezin arasındaki bağlanma dayanımını anlamlı derecede artırdığı
gözlenmiştir.

ANAHTAR KELİMELER: Hava
abrazyonu, dental; kayma mukavemeti; prostodonti; silikon dioksit 

Keywords

Hava abrazyonu, dental, kayma mukavemeti, prostodonti, silikon dioksit

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