AĞIZ İÇİ TAMİR YÖNTEMLERİNİN RENK AÇISINDAN DEĞERLENDİRİLMESİ

ÖZ Amaç: Çalışmamızın amacı iki farklı ağız içi porselen tamir seti (APTS) kullanılarak kompozit rezinle tamir edilen zirkonya restorasyonlarda dört farklı yüzey hazırlık yönteminin renge olan etkilerinin değerlendirilmesidir. Gereç ve yöntem: Disk şeklinde (2 x 5 mm) 80 adet zirkonya ve 80 adet zirkonya destekli porselen örnek hazırlanmıştır. Örneklerin L*a*b* değerleri kaydedilmiş ve iki farklı APTS (Clearfil Repair ve Ceramic Repair N) için porselen ve zirkonya örnekler ikiye ayrılmıştır. Bu ana gruplarda 40 örnek dört farklı yüzey hazırlık işleminin (elmas frezle pürüzlendirme, ağız içi kumlama, uzun ve kısa atım Er,Cr:YSGG lazer ışınlama) uygulanması için 4 alt gruba (N = 10) daha ayrılmıştır. APTS’leri ve bu kitlerle uyumlu kompozit rezinler (Clearfil Majesty Esthetic ve Tetric N Ceram) örnek yüzeylerine tatbik edilmiştir. Kompozit rezinler her bir zirkonya ve porselen yüzeyine standart bir teflon kalıp (2 x 2 mm) kullanılarak inkremental teknikle yerleştirilmiştir. Tamir edilen örnek yüzeylerinde L*a*b* değerleri kaydedilmiş olup, ilgili formül kullanılarak ΔE değerleri hesaplanmıştır. Başlangıç ve sonuç renk farklılıkları kaydedilip istatistiksel analiz (tek yönlü varyans analizi) yapılmıştır. Bulgular: APTS ve yüzey hazırlık işlemlerine göre hesaplanan renk farklılıkları klinik olarak kabul edilebilir değerden (∆E = 5.5) yüksektir. Zirkonya destekli porselen örneklerde uzun atım lazer ışınlaması ve Clearfil Repair APTS uygulanan grup en düşük ∆E değerini (∆E = 5.90) göstermiştir. Kısa atım lazer ışınlaması ve Clearfil Repair APTS uygulandığı zirkonya örneklerin grubu diğer gruplara göre en yüksek renk değişikliğini (∆E=13.65) sergilemiştir. Sonuç: Tamir edilen zirkonya ve zirkonya destekli porselenlerin ilk renklerine göre renk farklılıkları; tiplerine, kullanılan yüzey hazırlık yöntemlerine ve uygulanan APTS’lerine bağlı olmaksızın klinik olarak kabul edilebilir değildir. Anahtar kelimeler: Zirkonyum oksit, dental porselen, kompozit dental rezin, dental protez tamiri, renk, spektrofotometre. EVALUATION OF INTRAORAL REPAIR METHODS IN TERMS OF COLOR ABSTRACT Aim: The purpose of this study was to evaluate effect of four different surface treatment procedures on color alterations of zirconia restorations that was repaired with composite resin using two different intraoral porcelain repair systems. Materials and method: 80 zirconia and 80 zirconia-based porcelain veneer were used to prepare disc-shaped specimens (2 x 5 mm). L*a*b* values of specimens were recorded, and the zirconia and the porcelain specimens were divided into two main group for two different intraoral porcelain repair systems (Clearfil Repair ve Ceramic Repair N). 40 specimens in that main groups were divided into four subgroup (N = 10) in order to perform four different surface treatment procedures (surface grinding with diamond bur, intraoral sandblasting, long pulse and short pulse of Er,Cr:YSGG laser irradiation). The intraoral porcelain repair kits and composite resins (Clearfil Majesty Esthetic Tetric N Ceram) that are compatible with the repair kits were applied to surface of the specimens. Composite resins were built-up on each zirconia and porcelain surfaces using a standard teflon mold (2 x 2 mm) and incrementally filled. L*a*b* values of repaired specimens were recorded and ΔE values were calculated using the formula. Color differences between the initial and final records were statistically analyzed (1-way ANOVA). Results: The color changes which calculated upon surface treatments and intraoral porcelain repair kits were higher than clinical acceptability threshold (∆E = 5.5). Zirconia-based porcelain specimens that were treated long pulse laser irradiation and repaired using Clearfil Repair intraoral porcelain repair kit group showed lowest ∆E value (∆E = 5.90). Short pulse laser irradiation applied zirconia specimens that were repaired with Clearfil Repair kit group illustrated highest color changes (∆E = 13.65) among the tested groups. Conclusion: The color differences of repaired zirconia and zirconia-based porcelain veneer, regardless of their type, surface treatment method, and applied intraoral porcelain repair kit, was not clinically acceptable when compared to the initial shade of the specimens. Keywords: Zirconium oxide, dental porcelain, composite dental resin, dental prosthesis repair, color, spectrophotometry.

Anahtar Kelimeler:

Zirkonyum oksit, dental porselen, kompozit dental rezin, dental protez tamiri, renk

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