The Effect of Different Polishing Techniques on Surface Roughness and Colour Change of Composites

Year 2025, Volume: 7 Issue: 2, 183 - 192, 29.08.2025

Fikri Öcal , Tuba Sarıcı , Enis Şimşek , Burak Dayı

Abstract

Aim: This study aimed to compare and evaluate the effect of different polishing methods on the surface roughness and colour change of composite resins.
Materials and methods: This study used a total of 100 disc-shaped samples made of microhybrid (M) and nanohybrid (N) composite resins. The experimental groups comprised of 5 groups (n=10) for each composite type. The groups were as follows: control (K), diamond bur+polishing rubber (BP), arkansas bur+polishing rubber (AP), diamond bur+polishing rubber+polishing paste (BPP), and disc+polishing paste (DP). Surface roughness (Ra) and initial colour were measured after the polishing methods were tested on all groups. After 7 days of coffee solution application, the colour changes (ΔE) were measured again and the results were recorded. CIEDE2000 formula was used to calculate the colour change.
Results: Mann-Whitney U test, Kruskal-Wallis test, and one-way analysis of variance were used in statistical analyses where appropriate. The samples to which disc and polishing paste were applied showed statistically significantly brighter surfaces than the other groups (p<0.05). The highest colour change was observed in the control group and the groups where arkansas stone was applied (p<0.05). Colour change was also higher in the groups with higher surface roughness.
Conclusion: Polishing with polishing paste can give good results in polishing and colour stability of composites.

Keywords

Keywords: Composite , polishing , surface roughness , colour stability

Farklı Polisaj İşlemlerinin Kompozitlerin Yüzey Pürüzlülüğü ve Renk Değişimine Olan Etkisi

Abstract

Amaç: Bu çalışmanın amacı farklı polisaj yöntemlerinin kompozit rezinlerin yüzey pürüzlülüğü ve renk değişimine olan etkisininin karşılaştırılması ve değerlendirilmesidir.
Gereç ve yöntem: Çalışmada mikrohibrit (M) ve nanohibrit (N) kompozit rezinlerden oluşan toplam 100 adet disk şeklindeki örnekler kullanılmıştır. Deney grupları her kompozit türü için 5 gruptan (n=10) oluşmaktaydı. Gruplar; kontrol (C), elmas frez+polisaj lastiği (BP), arkansas frez+polisaj lastiği (AP), elmas frez+polisaj lastiği+polisaj patı (BPP) ve disk+polisaj patı (DP) şeklindeydi. Tüm gruplara test edilen polisaj yöntemleri uygulandıktan sonra yüzey pürüzlülüğü (Ra) ve başlangıç renkleri ölçülmüştür. 7 günlük kahve solüsyonu uygulamasından sonra renk değişimleri tekrar ölçülerek elde edilen sonuçlar kaydedilmiştir. Renk değişiminin hesaplanmasında CIEDE2000 formülü kullanılmıştır.
Bulgular: İstatistiksel analizlerde Mann-Whitney U testi, Kruskal Wallis testi ve Tek yönlü varyans analizi kullanılmıştır. Disk ve polisaj pastasının uygulandığı örnekler diğer gruplara göre istatistiksel olarak anlamlı derecede pürüzsüz yüzeyler göstermekteydi (p<0,05). En fazla renk değişimi kontrol grubu ve arkansas taşının uygulandığı gruplarda görülmekteydi (p<0,05). Yüzey pürüzlülüğünün fazla olduğu gruplarda renk değişimi de fazlaydı.
Sonuç: Polisaj patı ile yapılan polisaj işlemleri kompozitlerin parlatılmasında ve renk stabilitesinde iyi sonuçlar verebilmektedir.

Keywords

Anahtar kelimeler: Kompozit , polisaj , yüzey pürüzlülüğü , renk stabilitesi

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