Yeditepe J Dent. 2021; 17(3): 214-219 | DOI: 10.5505/yeditepe.2021.46547

Geçici restorasyon materyallerinin yüzey aþýnmalarýnýn deðerlendirilmesi

Merve Benli¹, Olivier Huck^2
1Ýstanbul Üniversitesi, Diþ Hekimliði Fakültesi, Protetik Diþ Tedavisi A.D., Ýstanbul
²Strasbourg Üniversitesi, Diþ Hekimliði Fakültesi, Periodontoloji A.D., Strasburg

GÝRÝÞ ve AMAÇ: Bu çalýþmanýn amacý, üç farklý geçici restorasyon materyalinin yüzey aþýnma davranýþlarýnýn karþýlaþtýrýlmasýdýr.
YÖNTEM ve GEREÇLER: Çalýþma, üç grup (grup PM: Polimetil metakrilat; grup PE: Polietil metakrilat, grup BÝS: Bis-akril kompozit rezin) ve toplam 60 adet örnekten (n=20) oluþmaktadýr. Aþýnma testi için çiðneme simülasyon cihazý kullanýlmýþ olup, örnekler 10000,20000 ve 30000 devirlerde teste tabi tutulmuþtur (5-55°C, termal siklus). Örnek yüzeylerinde oluþan aþýnma miktarýnýn belirlenmesinde temassýz optik profilometre kullanýlmýþtýr. Verilerin istatistiksel olarak deðerlendirilmesinde Shapiro-Wilk, iki yönlü varyans analizi ve Tukey testleri ile Univariate yönteminden yararlanýlmýþtýr (p<0,05).
BULGULAR: Elde edilen verilere göre, aþýnma miktarý gruplar arasýnda anlamlý bir farklýlýk oluþturmaktadýr (p<0,001). En yüksek ortalama aþýnma deðeri PE grubunda (186,2(39,34) μm) iken, en düþük ortalama deðer BÝS grubunda (92,82(10,79) μm) elde edilmiþtir. Çiðneme devir sayýsýnýn da aþýnma miktarýna etki ettiði saptanmýþ olup (p<0,001), tüm gruplarýn ortalama faset derinlikleri 10000 devirde 112,64 (22,77) μm, 20000 devirde 149 (47,05) μm ve 30000 devirde 170,76 (48,93) μm’dir.
TARTIÞMA ve SONUÇ: Çalýþmada deðerlendirilen parametrelere göre, BÝS, PM ve PE’ye göre daha fazla aþýnma direnci göstermektedir. Bu nedenle, uzun dönem geçici restorasyon kullanýmýnda BÝS materyali önerilirken, kýsa dönemli klinik gereksinimlerde PM veya PE materyalleri uygulanabilir.

Anahtar Kelimeler: Geçici restorasyon, aþýnma direnci, bis-akril kompozit rezin.

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Evaluation of surface wear of provisional restorative materials

Merve Benli¹, Olivier Huck^2
1Faculty of Dentistry, Department of Prosthodontics, Istanbul University, Istanbul, Turkey
²Strasbourg University, Faculty of Dentistry, Department of Periodontology, Strasbourg, France

INTRODUCTION: The aim of this study is to compare the surface wear behavior of three different provisional restorative materials.
METHODS: The study consists of three groups (group PM: Polymethyl methacrylate; group PE: Polyethyl methacrylate, group BIS: Bis-acryl composite resin) and a total of 60 samples (n = 20). A chewing simulator was used for the wear test and the samples were subjected of 10000, 20000 and 30000 cycles (5-55°C, thermocycling). Non-contact optical profilometer was used to determine the amount of wear on the sample surfaces. Shapiro-Wilk, two-way analysis of variance and Tukey tests and Univariate method were used in the statistical analysis of the data (p <0.05).
RESULTS: According to the data obtained, the amount of wear makes a significant difference between the groups (p <0.001). While the highest average wear value was in PE group (186.2 (39.34) μm), the lowest average value was obtained in BIS group (92.82 (10.79) μm). It was determined that the number of chewing cycles also affected the amount of wear (p <0.001), the average facet depths of all groups were 112.64 (22.77) μm at 10000 cycles, 149 (47.05) μm at 20000 cycles, and 170.76 (48.93) μm at 30000 cycles.
DISCUSSION AND CONCLUSION: Regarding the parameters evaluated in the study, BIS shows more wear resistance than PM and PE. Thus, while BIS material is recommended for long-term provisional restoration use, PM or PE materials can be applied in short-term clinical needs.

Keywords: Provisional restoration, wear resistance, bis-acryl composite resin.

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