Farklı CAD/CAM materyallerinin fırçalama simülatörü sonrası aşınma ve yüzey pürüzlülüğünün değerlendirilmesi

Year 2025, Volume: 7 Issue: 6, 919 - 924, 26.10.2025

Özgür Ozan Tanrıkut , Mehmet Uğur

https://doi.org/10.38053/acmj.1780425

Abstract

Amaç: Çiğneme, diş fırçalama ve parafonksiyonel alışkanlıklar, restoratif materyallerde aşınma ve yüzey pürüzlülüğünü artırarak restorasyonların uzun ömürlülüğünü doğrudan etkileyebilir. Bu çalışmanın amacı, farklı kimyasal bileşimlere sahip CAD/CAM seramiklerinin beş yıllık diş fırçalama simülasyonu sonrasında aşınma miktarı ve yüzey pürüzlülüğünü değerlendirmektir. Yöntem: Feldspatik seramik (Vita Mark II), zirkonya ile güçlendirilmiş lityum silikat (Vita Suprinity), polimer infiltrasyonlu hibrit seramik (Vita Enamic) ve rezin nano-seramik (Brilliant Crios) blokları kullanıldı. Örnekler 2 mm kalınlığında kesildi. Vita Mark II, Vita Suprinity ve Vita Enamic örnekleri glaze uygulanırken, Brilliant Crios örnekleri üretici talimatlarına göre polisajlandı. Bilgisayar kontrollü diş fırçalama simülatörü 20 mm ileri–geri hareket, 1,25 Hz frekans ve 3 N kuvvetle uygulandı. Toplam 36.500 siklus ile beş yıllık fırçalama simüle edildi. Yüzey pürüzlülüğü, birinci, üçüncü ve beşinci yıllarda 2D kontakt profilometre ve 3D optik profilometre ile ölçüldü; aşınma ise hassas terazi ile belirlendi. Bulgular: Aşınma açısından Vita Suprinity ile Vita Enamic ve Brilliant Crios arasında istatistiksel olarak anlamlı fark bulundu (p<0,05). Aşınma miktarı en düşükten en yükseğe doğru: Vita Suprinity, Vita Mark II, Vita Enamic ve Brilliant Crios şeklinde sıralandı. En düşük aşınma birinci yılda, en yüksek aşınma beşinci yılda gözlendi. Yüzey pürüzlülüğü değerleri en düşükten en yükseğe doğru: Vita Suprinity, Vita Mark II, Vita Enamic ve Brilliant Crios olarak sıralandı. Birinci ve beşinci yıl pürüzlülük değerleri arasında anlamlı fark bulunmazken (p>0,05), diğer zaman noktalarında anlamlı fark saptandı (p<0,05). En yüksek pürüzlülük birinci yılda, en düşük üçüncü yılda gözlendi. Sonuç: Glaze uygulanmış örneklerde yüzey pürüzlülüğü birinci yılda artmış, üçüncü yılda azalmış, beşinci yılda tekrar artmıştır. Polisaj uygulanmış örneklerde ise pürüzlülük zamanla sürekli artış göstermiştir. Glaze gruplarında yüzey aşınması polisaj gruplarına göre daha fazla olmuştur. Vita Suprinity hem aşınma direnci hem de yüzey düzgünlüğü açısından en iyi performansı sergilerken, Brilliant Crios en yüksek aşınma ve pürüzlülüğü göstermiştir.

Keywords

CAD/CAM seramik , fırça abrazyonu , yüzey pürüzlülüğü , aşınma

Ethical Statement

Bu çalışma, insan katılımcılar, hasta verileri veya hayvan denekleri içermeyen in-vitro laboratuvar araştırmasıdır. Bu nedenle etik kurul onayı gerekmemektedir.

Supporting Institution

Bu çalışma, Van Yüzüncü Yıl Üniversitesi Bilimsel Araştırma Projeleri Koordinatörlüğü tarafından desteklenmiştir.

Project Number

TDH-2021-9321

Evaluation of wear and surface roughness after brushing simulator of different CAD/CAM materials

Abstract

Aims: Chewing, toothbrushing, and parafunctional habits can increase the wear and surface roughness of restorative materials, directly affecting the longevity of restorations. This study aimed to evaluate the wear amount and surface roughness of CAD/CAM ceramics with different chemical compositions after a five-year toothbrushing simulation.
Methods: Feldspathic ceramic (Vita Mark II), zirconia-reinforced lithium silicate (Vita Suprinity), polymer-infiltrated hybrid ceramic (Vita Enamic), and resin nano-ceramic (Brilliant Crios) blocks were used. Specimens were sectioned into 2 mm thickness. Vita Mark II, Vita Suprinity, and Vita Enamic were glazed, while Brilliant Crios was polished according to the manufacturers’ instructions. A computer-controlled toothbrushing simulator was applied with a 20 mm back-and-forth movement, 1.25 Hz frequency, and 3 N force. A total of 36.500 cycles simulated five years of brushing. Surface roughness was measured at the first, third, and fifth years using a 2D contact profilometer and a 3D optical profilometer, while wear was determined by precision balance.
Results: A statistically significant difference was found between Vita Suprinity and both Vita Enamic and Brilliant Crios in terms of wear (p<0.05). The order of wear, from lowest to highest, was: Vita Suprinity, Vita Mark II, Vita Enamic, and Brilliant Crios. The lowest wear occurred at the first year, and the highest at the fifth year. Surface roughness values ranked from lowest to highest as: Vita Suprinity, Vita Mark II, Vita Enamic, and Brilliant Crios. No significant difference was found between the first and fifth year roughness values (p>0.05), while significant differences were detected among other time points (p<0.05). The highest roughness was observed at first year, and the lowest at third year.
Conclusion: Glazed specimens exhibited an increase in surface roughness at first year, a decrease at third year, and an increase again at fifth years. Polished specimens showed a continuous increase in roughness over time. Surface wear was greater in glazed than in polished specimens. Vita Suprinity demonstrated the best performance in terms of both wear resistance and surface smoothness, while Brilliant Crios exhibited the highest wear and roughness.

Keywords

CAD/CAM ceramic , toothbrush abrasion , surface roughness , wear

Ethical Statement

This study is an in-vitro laboratory research that does not involve human participants, patient data, or animal subjects. Therefore, ethical committee approval was not required.

Supporting Institution

This study was supported by Van Yüzüncü Yıl University Scientific Research Projects Coordination Unit.

Project Number

TDH-2021-9321

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