Turkiye Klinikleri Journal of Dental Sciences

.: ORIGINAL RESEARCH
Effects of Whitening Toothpastes on Microhardness and Surface Roughness of Composite Resins: An In Vitro Study
Beyazlatıcı Diş Macunlarının Kompozit Rezinlerin Mikrosertliğine ve Yüzey Pürüzlülüğüne Etkisi: Bir İn Vitro Çalışma
Pınar NAİBOĞLUa, Tuğba KOŞARb
aDepartment of Restorative Dentistry, Giresun University Faculty of Dentistry, Giresun, Türkiye
bDepartment of Endodontics, Karadeniz Technical University Faculty of Dentistry, Trabzon, Türkiye
Turkiye Klinikleri J Dental Sci. 2023;29(1):187-95
doi: 10.5336/dentalsci.2022-93446
Article Language: EN
Full Text
ABSTRACT
Objective: This study aimed to assess the effect of different types of whitening toothpastes on the microhardness and surface roughness of composite resins. Material and Methods: 120 discshaped samples each of Clearfil Majesty Esthetic and Gradia Direct Anterior composite resins were randomly assigned to 4 groups, based on the toothpaste used [three whitening toothpastes: Signal White Now (SWN), Colgate Optic White (COW), Ipana 3D White Luxe (IWL), and one non-whitening toothpaste: Sensodyne Promine (SP)]. The samples were brushed using an electrical toothbrush for 4 minutes. Before and after toothbrushing surface roughness (n=15) and Vickers microhardness (n=15) values were measured and the topography of the composite resins was observed using scanning electron microscopy. Data were analyzed using repeated measures analysis of variance and Bonferroni correction (p˂0.05). Results: The surface roughness was significantly affected by the toothpastes (p=0.013) and there was a significant interaction between toothpastes and composite resins (p˂0.001). The surface roughness of composite resins significantly increased after toothbrushing with all toothpastes. SWN and IWL showed significantly higher surface roughness values than SP (p=0.024 and p=0.028, respectively). There was a significant increase in the microhardness values for Gradia Direct Anterior after toothbrushing with SWN, IWL and SP (p=0.003, p˂0.001 and p=0.029, respectively). Conclusion: In this study, it was determined that all toothpastes increased the surface roughness values of Clearfil Majesty Esthetic and Gradia Direct Anterior, and all toothpastes (except COW) increased the microhardness values of Gradia Direct Anterior. Clinicians should notify patients of the abrasive capacity of all toothpastes, especially those that are whitening.

Keywords: Composite dental resin; toothbrushing; toothpaste; surface properties
ÖZET
Amaç: Bu çalışmada, farklı türde beyazlatıcı diş macunlarının kompozit rezinlerin mikrosertliği ve yüzey pürüzlülüğü üzerine etkisinin değerlendirilmesi amaçlandı. Gereç ve Yöntemler: Clearfil Majesty Esthetic ve Gradia Direct Anterior kompozit rezinlerinin her birinden elde edilen disk şeklinde 120 adet örnek, kullanılan diş macununa göre rastgele 4 gruba ayrıldı [3 beyazlatıcı diş macunu: Signal White Now (SWN), Colgate Optic White (COW), Ipana 3D White Luxe (IWL) ve bir beyazlatıcı olmayan diş macunu: Sensodyne Promine (SP)]. Örnekler 4 dk boyunca elektrikli diş fırçası kullanılarak fırçalandı. Fırçalamadan önce ve sonra örneklerin yüzey pürüzlülük (n=15) ve Vickers mikrosertlik (n=15) değerleri ölçüldü ve taramalı elektron mikroskobu kullanılarak kompozit rezinlerin yüzey topografyası gözlemlendi. Veriler tekrarlı ölçümlerde varyans analizi ve Bonferroni düzeltmesi kullanılarak analiz edildi (p˂0,05). Bulgular: Örneklerin yüzey pürüzlülüğü diş macunlarından anlamlı şekilde etkilendi (p=0,013), diş macunları ve kompozit rezinler arasında anlamlı bir etkileşim gözlendi (p˂0,001). Kompozit rezinlerin yüzey pürüzlülük değerleri, tüm diş macunları ile fırçalamadan sonra anlamlı olarak arttı. SWN ve IWL, SP'den daha fazla yüzey pürüzlülüğüne neden oldu (p=0,024 ve p=0,028, sırasıyla). Gradia Direct Anteriorun mikrosertlik değerlerinde SWN, IWL ve SP ile fırçalandıktan sonra anlamlı bir artış belirlendi (p=0,003, p˂0,001 ve p=0,029, sırasıyla). Sonuç: Bu çalışmada, tüm diş macunlarının Clearfil Majesty Esthetic ve Gradia Direct Anteriorun yüzey pürüzlülüğünü ve COW hariç diğer tüm diş macunlarının Gradia Direct Anteriorun mikrosertlik değerlerini artırdığı belirlendi. Klinisyenler, özellikle beyazlatıcı diş macunları olmak üzere tüm diş macunlarının abraziv kapasiteleri konusunda hastaları bilgilendirmelidir.

Anahtar Kelimeler: Kompozit dental rezin; diş fırçalama; diş macunu; yüzey özellikleri
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