The Effect of the Toothbrushing and Surface Treatments on the Surface Roughness of Interim Crown Materials Used for Conventional, Subtractive, and Additive Manufacturing Techniques: An in Vitro Study

Year 2023, , 554 - 559, 25.12.2023

Hatice Nalan Bozoğulları , Ayşegül Köroğlu , Onur Şahin , Beşar İzzetağa

https://doi.org/10.15311/selcukdentj.1268305

Abstract

Background: This study aimed to compare the effect of the surface treatment and toothbrushing abrasion on the surface roughness of interim crown material specimens manufactured using conventional, subtractive, and additive processing techniques.
Material and methods: 80 disk-shaped specimens were prepared from 4 different interim crown materials; one auto-polymerized polymethyl methacrylate resin (PMMA);(IM) and one bis-acryl composite resin;(AC) for conventional technique, one computer-aided design/computer-aided manufacturing (CAD-CAM) PMMA block;(TC) for subtractive process, one 3-dimensionally (3D) printed resin;(CB) for additive process. Specimens of each interim crown material were divided into two subgroups according to applied surface treatments; conventional polishing or surface sealant agent coupling (n=10). The surface roughness values of specimens before (Ra0) and after 10,000 cycles of toothbrushing (Ra1) were measured with a profilometer. Data were statistically analyzed.
Results: The polished groups of all interim crown materials showed significantly higher Ra0 values compared to the sealant groups before toothbrushing (p˂0.05). While the polished IM groups exhibited the highest Ra0 value (0.44±0.08), the sealed TC groups exhibited the lowest Ra0 value (0.23±0.06). The Ra values of all material groups increased after simulated 1-year toothbrushing. While the polished IM group exhibited the highest Ra1 value (0.45±0.14), the sealed CB group had the lowest Ra1 value (0.31±0.09).
Conclusion: It was observed that toothbrushing caused an increase in the surface roughness of all interim materials. The application of a surface sealant agent to these materials is more effective than polishing to reduce surface roughness. Sealed 3D printed resin for additive process exhibited the lowest mean roughness value after toothbrushing.
Keywords: Additive Manufactured, Interim Crown Material, Roughness, Subtractive Manufactured, Toothbrushing Abrasion

Keywords

Additive Manufactured, Interim Crown Material, Roughness

Project Number

yok

Konvansiyonel, Eksiltmeli ve Eklemeli İmalat Tekniklerinde Kullanılan Geçici Kron Materyallerinin Yüzey Pürüzlülüğüne Diş Fırçalama ve Yüzey İşlemlerinin Etkisi: İn Vitro Çalışma

Abstract

Amaç: Çalışma konvansiyonel, eksiltmeli ve eklemeli imalat yöntemleri kullanılarak üretilen geçici kron örneklerin yüzey pürüzlülüğüne yüzey işlemi ve diş fırçası aşınmasının etkisini karşılaştırmayı amaçladı.
Gereç ve yöntemler: 4 farklı geçici kron materyalinden toplamada 80 adet disk şeklinde örnek hazırlandı; konvansiyonel üretim için bir oto-polimerizan polimetil metakrilat resin (PMMA);(IM) ve bis-akrilik kompozit resin;(AC), eksiltmeli imalat için bilgisayar destekli tasarım-bilgisayar destekli üretim (CAD-CAM) PMMA blok;(TC), eklemeli imalat için 3 boyutlu yazıcı resini (3D);(CB). Her bir geçici kron materyaline ait örnekler uygulanacak yüzey işlemlerine göre iki alt gruba ayrıldı; konvansiyonel polisaj veya yüzey örtücü ajan uygulaması (n=10). Örneklerin 10.000 diş fırçalama öncesi (Ra0) ve sonrası (Ra1) yüzey pürüzlülük değerleri profilometre ile ölçüldü. Veriler 2 yönlü ANOVA, Bonferroni post hoc ve paired sample t-testi ile istatistiksel olarak analiz edildi.
Bulgular: Tüm geçici kron materyallerinin konvansiyonel polisaj işlemi uygulanmış gruplarının Ra0 değerleri, yüzey örtücü uygulanmış gruplarına kıyasla anlamlı derecede daha yüksekti (p˂0.05). Polisajlı IM grupları en yüksek Ra0 değerine sahipken (0,44±0,08), yüzey örtücü uygulanmış TC grubu en düşük Ra0 değeri göstermiştir (0,23±0,06). 1 yıllık diş fırçalaması sonrası tüm materyal gruplarının Ra değerleri artmıştır. Polisajlı IM grubu en yüksek Ra1 değerine sahipken (0,45±0,14), örtücü uygulanan CB grubu en düşük Ra1 değeri göstermiştir (0,31±0,09).
Sonuç: Test edilen materyallere yüzey örtücü uygulaması yüzey pürüzlülüğünü azaltmada konvansiyonel polisaja kıyasla daha etkilidir. Fırçalamanın test edilen tüm geçici kron materyallerinin yüzey pürüzlülüğünde artışa neden olduğu görülmüştür. Fırçalama sonrası tüm materyaller içinde yüzey örtücü uygulanmış 3D yazıcı rezinin yüzey pürüzlülüğü en düşüktür

Keywords

Diş Fırçası abrazyonu, Eklemeli imalat, Eksiltmeli imalat, Geçici kron materyali, Pürüzlülük

Supporting Institution

yok

Project Number

yok

Thanks

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