Geçici Restorasyon Materyallerinde Tabaka Kalınlığının Yüzey Pürüzlülüğü, Renk Stabilitesi ve Mikrobiyal Tutulum Üzerine Etkisi: İn vitro Bir Çalışma

Year 2025, Volume: 26 Issue: 3, 326 - 334, 22.09.2025

Bahadır Ezmek , Belgin Altun , Enes Ekinci , Cem Sahin

https://doi.org/10.69601/meandrosmdj.1673654

Abstract

Amaç: Bu çalışma, geçici restorasyonlarda 3D baskı katman kalınlığının (BLT) yüzey pürüzlülüğü, renk stabilitesi ve mikrobiyal adezyon üzerindeki etkisini değerlendirmeyi ve bu bulguları geleneksel ve kazıma yöntemiyle üretilen örneklerle karşılaştırmayı amaçlamaktadır.
Gereç ve Yöntemler: Disk şeklinde örnekler (2 mm kalınlık, 10 mm çap) geleneksel, 3D baskı ve kazıma olmak üzere üç farklı üretim yöntemiyle hazırlanmıştır. 3D baskı örnekleri, Dijital Işık İşleme (DLP) yazıcısı kullanılarak 30 μm, 50 μm ve 70 μm katman kalınlıklarında üretilmiştir. Yüzey pürüzlülüğü, konfokal mikroskopi ile ölçülmüştür. Renk stabilitesi, örneklerin 14 gün boyunca yapay türük, kahve ve kırmızı şarap içinde bekletilmesi sonrasında bir diş spektrofotometresi kullanılarak belirlenmiştir. Mikrobiyal adezyon, bakteriyel ve fungal suşlar kullanılarak değerlendirilmiş ve adezyon seviyeleri sınıflandırılmıştır.
Bulgular: İstatistiksel analizler, BLT’nin yüzey pürüzlülüğü önemli ölçüede etkilediğini göstermiştir. 30 μm BLT en düzgün yüzeye sahip olurken, en fazla renk değişikliği 70 μm BLT grubunda gözlenmiştir. Mikrobiyal adezyon, kazıma örneklerinde 3D baskı ve geleneksel akrilik rezinlere göre daha yüksek bulunmuştur.
Sonuç: BLT, 3D baskı geçici restorasyonlarının yüzey özelliklerini önemli ölçüde etkilemektedir. 30 μm BLT, düşük yüzey pürüzlülüğü ve azaltılmış renk değişikliği ile en iyi performansı sağlamıştır. Bununla birlikte, 3D baskı rezin malzemelerinin monomer içeriği hala belirsizdir ve daha fazla araştırma gerektirmektedir. 3D baskı diş malzemelerinin optimizasyonu için daha kapsamlı çalışmalar gereklidir.

Keywords

3 boyutlu baskı , yüzey özellikleri , Diş renklenmesi , Biofilm

The Effect of Layer Thickness on Surface Roughness, Color Stability, and Microbial Adherence of Temporary Restoration Materials: An In Vitro Study

Abstract

Objectives: This study aims to evaluate the effect of built layer thickness (BLT) on the surface roughness, color stability, and microbial adhesion of 3D-printed interim restorations, comparing them with conventional and milled resin materials.
Materials and Methods: Disk-shaped samples (2 mm thickness, 10 mm diameter) were fabricated using three different manufacturing methods: conventional, 3D printing, and milling. The 3D-printed samples were produced using a Digital Light Processing (DLP) printer with BLTs of 30 μm, 50 μm, and 70 μm. Surface roughness was measured using confocal microscopy. Color stability was assessed after immersion in artificial saliva, coffee, and red wine for 14 days, with color differences determined using a dental spectrophotometer. Microbial adhesion was evaluated using bacterial and fungal strains, and adherence levels were classified.
Results: Statistical analysis showed that BLT significantly influenced surface roughness, with 30 μm BLT exhibiting the smoothest surfaces. The highest discoloration was observed in the 70 μm BLT group, while the least discoloration was in the milling group. Microbial adhesion was higher on milled samples compared to 3D-printed materials and conventional acrylic resin.
Conclusion: BLT significantly affects the surface properties of 3D-printed interim restorations. A 30 μm BLT provided the best surface characteristics with lower roughness and reduced discoloration. However, the monomer content of 3D printing resins remains unclear, necessitating further investigation. More comprehensive studies are required to optimize 3D-printed dental materials.

Keywords

3-Dimensional Printing , Surface Properties , Tooth Discoloration , Biofilms

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