Farklı Tip ve Kalınlıklardaki Monolitik Zirkonya Seramiklerin Rezin Simanların Polimerizasyon ve Mikrosertliğine Etkisi
Yükleniyor...
Dosyalar
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Selçuk Üniversitesi Sağlık Bilimleri Enstitüsü
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu in vitro çalışmanın amacı; üç farklı tip ve beş farklı kalınlıktaki monolitik zirkonya
seramiklerin iki farklı hem kimyasal hem de ışıkla polimerize olan simanlar (Calibra, Panavia)
polimerizasyon derecesi (DC) ve mikrosertliğine (VHN) olan etkisinin incelenmesidir. Üç farklı
monolitik zirkonya materyali (Vita YZ/HT (VT), Copra Supreme (CS), Dental Direkt (DD)) beş farklı
kalınlıkta (0,5 mm, 1 mm, 1,5 mm, 2 mm ve 2,5 mm) bilgisayar destekli tasarım – bilgisayar destekli
üretim (CAD-CAM) ile üretildi. Hazırlanan örnekler üretici firmaların talimatları doğrultusunda
sinterizasyon işlemine tabii tutuldu. Her bir seramik kesiti altında iki farklı markaya ait hem kimyasal
hem de ışıkla polimerize olan rezin simanların polimerizasyonu gerçekleştirildi. Her bir alt grup için
10’ar adet olmak üzere toplamda 300 adet örnek hazırlandı (n=10). Hazırlanan örnekler 24 saat boyunca
37 °C’de ışık almayacak şekilde saklandı. Tüm örnekler, dönüşüm derecelerinin belirlenebilmesi
amacıyla fourier dönüşüm infrared spektroskopisi (FTIR) analizi ile test edilerek 1608 ve 1637 cm-1
dalga boylarındaki absorbsiyon miktarları kaydedildi. Her iki rezin siman türünden seramik olmadan
hazırlanan 10 örnek polimerizasyon öncesi ve sonrası FTIR analiziyle incelendi ve kontrol grubu olarak
görev gördü. FTIR ölçümü tamamlanan örneklere sonrasında 15 sn süre ile 50 gram kuvvet (grf) ile
Vickers mikrosertlik testi yapıldı. Sonuçların analiz edilmesi için Shapiro Wilk, üç yönlü ANOVA, üç
yönlü Robust ANOVA, Tukey HSD, Bonferroni yöntemi, Pearson korelasyon katsayısı ve Spearman’s
rho korelasyon katsayısı kullanılmıştır (P<0,05).
Dönüşüm derecesi değerleri için seramik türleri arasında istatistiksel olarak fark gözlenmezken
(P=0,051); kalınlık, siman tipi, kalınlık x siman ve seramik tipi x kalınlık x siman etkileşimi istatistiksel
olarak anlamlı bulunmuştur (P<0,05). Ortalama DC değerleri Calibra ile polimerize edilen örnekler için
%57,79 ± 9,04 iken Panavia ile polimerize edilen örnekler için değerleri %55,67 ± 9,17’dur.
Mikrosertlik değerleri için seramik türü, kalınlık, siman, seramik türü x kalınlık, kalınlık x siman
etkileşimi istatistiksel olarak anlamlı bulunmuştur (P<0,05). Calibra ile polimerizasyonu
gerçekleştirilen örneklerin mikrosertlik değerleri ortalaması 10,04 ± 7,03 VHN iken, Panavia ile
polimerizasyonu gerçekleştirilen örneklerin mikrosertlik değerleri ortalaması 9,57 ± 6,28 VHN olarak
elde edilmiştir. En yüksek mikrosertlik değeri ortalaması üzerine seramik kesit uygulanmayan kontrol
gruplarında elde edilmiştir (22,46 ± 2,23 VHN). Seramik türleri ve rezin simanların dönüşüm derecesi
ve mikrosertlik değerleri arasında istatistiksel olarak pozitif yönde çok yüksek bir ilişki bulunmuştur.
Dönüşüm derecesi farklı monolititk zirkonya tipinden etkilenmezken, kalınlık ve rezin siman
tipi dönüşüm derecesini önemli ölçüde etkilemiştir. Kullanılan rezin simanların mikrosertliği ise
seramik tipi, kalınlık ve simandan etkilenmiştir. Bu nedenle klinik koşullarda kullanılacak seramik
türüne ve kalınlığına göre siman seçimi yapılması, materyallerin özellikleri açısından önem teşkil
etmektedir.
The aim of this in vitro study was to investigate the effect of monolithic zirconia ceramics of three different types and five different thicknesses on the degree of polymerization (DC) and microhardness (VHN) of two different chemical and light-cured (dual-cure) resin cement (Calibra, Panavia). Three different monolithic zirconia materials (Vita YZ/HT (VT), Copra Supreme (CS), Dental Direct (DD)) in five different thicknesses (0.5mm, 1mm, 1.5mm, 2mm, and 2.5mm) were fabricated with computer-aided design - computer-aided manufacturing (CAD-CAM). The prepared specimens were subjected to the sintering process by following the instructions of the manufacturers. Two different brands of dual-cure resin cement were polymerized under each ceramic section. A total of 300 specimens were prepared, 10 for each subgroup (n=10). The prepared specimens were stored at 37 °C for 24 hours, away from light. All specimens were tested with Fourier transform infrared spectroscopy (FTIR) analysis to determine their conversion degrees, and their absorption amounts at 1608 and 1637 cm-1 wavelengths were recorded. Ten samples of both types of resin cement prepared without ceramics were analyzed by FTIR analysis before and after polymerization and served as the control group. After the FTIR measurement was completed, the Vickers microhardness test was performed with 50 grams of force for 15 seconds. Shapiro Wilk, three-way ANOVA, three-way Robust ANOVA, Tukey HSD, Bonferroni method, Pearson correlation coefficient, and Spearman's rho correlation coefficient were used to analyze the results (P<0.05). While there was no statistical difference between the ceramic types for the DC values (P=0.051); the thickness, cement type, and the interaction of thickness x cement, and ceramic type x thickness x cement was found to be statistically significant (P<0.05). The mean DC values were 57.79 ± 9.04% for specimens polymerized with Calibra, while their values were 55.67% ± 9.17% for specimens polymerized with Panavia. Ceramic type, thickness, cement, ceramic type x thickness, and thickness x cement interaction were found to be statistically significant for microhardness values (P<0.05). While the average microhardness values of the specimens polymerized with Calibra were 10.04 ± 7.03 VHN, the average microhardness values of the samples polymerized with Panavia were 9.57 ± 6.28 VHN. The highest microhardness value was obtained in the control groups (22.46 ± 2.23 VHN). A statistically significant high positive correlation was found between the ceramic types and the DC and microhardness values of the resin cement. While the degree of conversion was not affected by different monolithic zirconia types, the thickness and resin cement type significantly affected the degree of conversion. The microhardness of the resin cement used was affected by the ceramic type, thickness, and cement. For this reason, choosing cement according to the type and thickness of the ceramic to be used in clinical conditions is important in terms of the properties of the materials.
The aim of this in vitro study was to investigate the effect of monolithic zirconia ceramics of three different types and five different thicknesses on the degree of polymerization (DC) and microhardness (VHN) of two different chemical and light-cured (dual-cure) resin cement (Calibra, Panavia). Three different monolithic zirconia materials (Vita YZ/HT (VT), Copra Supreme (CS), Dental Direct (DD)) in five different thicknesses (0.5mm, 1mm, 1.5mm, 2mm, and 2.5mm) were fabricated with computer-aided design - computer-aided manufacturing (CAD-CAM). The prepared specimens were subjected to the sintering process by following the instructions of the manufacturers. Two different brands of dual-cure resin cement were polymerized under each ceramic section. A total of 300 specimens were prepared, 10 for each subgroup (n=10). The prepared specimens were stored at 37 °C for 24 hours, away from light. All specimens were tested with Fourier transform infrared spectroscopy (FTIR) analysis to determine their conversion degrees, and their absorption amounts at 1608 and 1637 cm-1 wavelengths were recorded. Ten samples of both types of resin cement prepared without ceramics were analyzed by FTIR analysis before and after polymerization and served as the control group. After the FTIR measurement was completed, the Vickers microhardness test was performed with 50 grams of force for 15 seconds. Shapiro Wilk, three-way ANOVA, three-way Robust ANOVA, Tukey HSD, Bonferroni method, Pearson correlation coefficient, and Spearman's rho correlation coefficient were used to analyze the results (P<0.05). While there was no statistical difference between the ceramic types for the DC values (P=0.051); the thickness, cement type, and the interaction of thickness x cement, and ceramic type x thickness x cement was found to be statistically significant (P<0.05). The mean DC values were 57.79 ± 9.04% for specimens polymerized with Calibra, while their values were 55.67% ± 9.17% for specimens polymerized with Panavia. Ceramic type, thickness, cement, ceramic type x thickness, and thickness x cement interaction were found to be statistically significant for microhardness values (P<0.05). While the average microhardness values of the specimens polymerized with Calibra were 10.04 ± 7.03 VHN, the average microhardness values of the samples polymerized with Panavia were 9.57 ± 6.28 VHN. The highest microhardness value was obtained in the control groups (22.46 ± 2.23 VHN). A statistically significant high positive correlation was found between the ceramic types and the DC and microhardness values of the resin cement. While the degree of conversion was not affected by different monolithic zirconia types, the thickness and resin cement type significantly affected the degree of conversion. The microhardness of the resin cement used was affected by the ceramic type, thickness, and cement. For this reason, choosing cement according to the type and thickness of the ceramic to be used in clinical conditions is important in terms of the properties of the materials.
Açıklama
Anahtar Kelimeler
dönüşüm derecesi, mikrosertlik, monolitik zirkonya, rezin siman, degree of conversion, microhardness, monolithic zirconia, resin cement
Kaynak
WoS Q Değeri
Scopus Q Değeri
Cilt
Sayı
Künye
Akkese, İ. B., (2022). Farklı Tip ve Kalınlıklardaki Monolitik Zirkonya Seramiklerin Rezin Simanların Polimerizasyon ve Mikrosertliğine Etkisi. (Doktora Tezi). Selçuk Üniversitesi, Sağlık Bilimleri Enstitüsü, Konya.
