PROTEZ TEMİZLEYİCİLERİNİN YUMUŞAK ASTAR MADDELERİNİN RENK STABİLİTELERİ ÜZERİNE ETKİSİNİN DEĞERLENDİRİLMESİ

Öz

Amaç: Bu çalışmanın amacı uzun süreli silikon esaslı yumuşak astar maddelerinin renk stabiliteleri üzerine farklı protez temizleyicilerinin etkilerinin değerlen- dirilmesidir.

Materyal ve Metod: Bu çalışmada 2 farklı silikon esaslı yumuşak astar maddesi (Elite Soft ve Ufi Gel P) ile 3 farklı protez temizleyicisi [Corega Tabs, Fittydent, % 0.5 sodyum hipoklorit (NaOCl)] test edilmiş; distile su kontrol grubu olarak kullanılmıştır. Her yumuşak as- tar maddesinden 10 mm çapında ve 1 mm kalınlığında toplam 40 adet disk şeklinde örnek hazırlanmıştır (n=10). Protez temizleyicisine maruz bırakılmadan önce tüm örneklerin CIE L*a*b* değerleri spektrofo- tometre ile tespit edilmiştir. Uygulanacak temizleme prosedürüne göre rastgele 4 ayrı gruba ayrılan örnek- ler 8 saat protez temizleyicisine maruz bırakılmış daha sonra akan suda yıkanarak 16 saat boyunca distile su- da bekletilmiştir. Bu işlem 96 gün boyunca tekrar- lanmış; her 3 günlük periyot 1 hafta olarak kabul edil- miş ve böylece 6 aylık kullanım simüle edilmiştir. Renk ölçümleri sırasıyla 3 ve 6 ayı simüle eden, 48. ve 96. günün sonunda tekrarlanmıştır.  Renk farkı değeri (ΔE) hesaplanarak veriler istatistiksel olarak analiz edilmiştir.

Bulgular: Ufi Gel P, Elite Soft’a göre istatistiksel ola- rak anlamlı derecede düşük ΔE değerleri göstermiştir (P<0.05). Protez temizleyicileri kıyaslandığında, NaOCl grubu diğer protez temizleyicilerine ve kontrol grubuna göre daha yüksek renk farkına neden olmuş (P<0.05); Corega Tabs, Fittydent ve kontrol grubu arasında ise istatistiksel olarak anlamlı bir farklılık bulunamamıştır (P>0.05).

Sonuç: Renk stabilitesi, materyalin yıpranması ve zarar görmesi hakkında klinisyenlere fikir veren bir belirteçtir. Bu nedenle, yumuşak astar maddelerinde protez temizleyicileri nedeniyle oluşan renk farkı materyal seçiminde göz önünde bulundurulmalıdır.

Anahtar Kelimeler

• Silikon, spektrofotometre, sodyum hipoklorit, alkali peroksit

THE EFFECT OF DENTURE CLEANSERS ON THE COLOR STABILITY OF SOFT DENTURE LINING MATERIALS

Öz

Aim: The aim of this study was to evaluate the effect of denture cleansers on the color stability of long-term soft denture lining materials. Materials and Method: Two different silicone soft lining materials (Elite Soft and Ufi Gel P) and 3 different denture cleansers [Corega Tabs, Fittydent, 0.5% sodium hypochlorite (NaOCl)] were used in this study and distilled water was served as control group. Forty disc-shaped specimens, with 10 mm in diameter and 1 mm in thickness were fabricated from each soft lining material (n=10). CIE L*a*b* values of specimens were recorded with a spectrophotometer and then specimens were randomly divided into 4 groups according to the cleaning protocol. All of the specimens were immersed in denture cleansers for 8 hours, then washed under running water and after that stored in distilled water for 16 hours. This procedure was repeated for 96 days; every 3 days were considered as 1 week and thus 6-month of usage was simulated. Color measurements were repeated at the end of 48 and 96 (Nokta kaldırılsın) days and color differences (ΔE) were calculated. Data were statistically analyzed. Result: Ufi Gel P showed significantly lower ΔE values in comparison to Elite Soft (P<0.05). NaOCl demonstrated higher color differences than the other cleansers and control group (P<0.05); however there was no significantly difference among Corega Tabs, Fittydent and control group (P>0.05). Conclusion: Since color stability of soft liners is an important indicator for clinicians of aging or damaging, the color difference in soft liners caused by the denture cleansers should be taken into consideration in material selection

Anahtar Kelimeler

• Silicone, spectrophotometer, sodium hypochlorite, alkaline peroxide

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