Yeditepe J Dent. 2019; 15(2): 224-230 | DOI: 10.5505/yeditepe.2019.59140

CAD/CAM yüksek dayanýmlý cam seramikler

Diler Deniz, Güliz Aktaþ, M. Barýþ Güncü, Senay Canay
Hacettepe Üniversitesi Diþ Hekimliði Fakültesi, Protetik Diþ Tedavisi Ana Bilim Dalý,Ankara,Türkiye

Hastalarýn her geçen gün daha estetik ve hýzlý tedavi beklentileri arttýkça, dijital diþ hekimliðindeki geliþmeler de hýzlanmýþtýr. Yeni restoratif meteryaller ile tek seansta üretimi mümkün kýlan bilgisayar destekli tasarým ve üretim (CAD/CAM) teknolojisi, bu beklentileri karþýlar hale gelmiþtir. Dental porselenlerin temelini oluþturan feldspatik porselen ve lösitle güçlendirilmiþ cam seramiklerin düþük bükülme dayanýmý gibi dezavantajlarýný elimine etmek amacýyla, seramik yapýya güçlendirici maddeler eklenmiþtir. Bu durum tabaklama gerektirmeyen monolitik materyalleri geliþtirmiþtir. Böylece kor materyali gereksinimi ortadan kalkmýþtýr ve dolayýsý ile porselen-kor baðlantýsýndaki sorunlar elimine edilmiþtir. Sonuçta yapýsal bütünlüðü daha güçlü, CAD/CAM üretimine uygun hazýr disk ve bloklar kullanýma sunulmuþtur. Bu disk ve bloklar yapýya; lityum disilikat, zirkonyum oksit, aluminyum oksit, lösit ve rezin kompozit gibi maddeler eklenerek çeþitli üretim teknikleriyle üretilmektedirler. Bu materyallerin hangi klinik durumlarda tercih edileceði ise; materyalin mekanik, optik ve biyouyumluluk özelliðine göre belirlenmektedir. Bu derlemede ise son zamanlarda popüler hale gelen yüksek dayanýmlý cam seramiklerin güncel literatür desteði ile materyal özellikleri incelenmiþtir.

Anahtar Kelimeler: Yüksek dayanýmlý cam seramikler, lityum disilikat cam seramik, zirkonyumla güçlendirilmiþ cam seramik, biyomateryal özellikler

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CAD/CAM high strength glass ceramics

Diler Deniz, Güliz Aktaþ, M. Barýþ Güncü, Senay Canay
Department Of Prosthodontics, Faculty Of Dentistry, Hacettepe University, Ankara,Turkey

Day by day, developments in digital dentistry are accelerated with the increase of patient’s improved faster and aesthetic treatment expectations. Computer aided design and manufacturing (CAD / CAM) technology makes it possible to manufacture restorations in a single appointment with new restorative materials that meets these expectations of the patients. In order to eliminate the disadvantages of feldspatic porcelain and leucite-reinforced glass ceramics, which is the basis of dental porcelain with low flexural strength, has been added to the ceramic structure for reinforcement of the materials. This has improved monolithic materials that do not require veneering. Thus, the core material has not been needed, and therefore problems with porcelain-core connection have been eliminated. Consequently, prefabricated discs and blocks with more stronger structural integrity are available for CAD/CAM. These discs and blocks are made with various production techniques by adding materials such as lithium disilicate, zirconium oxide, aluminum oxide, leucite and resin composite. The clinical situation in which these materials are to be used is determined by the mechanical, optical and biocompatibility of the material. In this review, recent literature support and material properties of high strength glass ceramics, which became popular recently, were examined.

Keywords: High-strength glass ceramics, lithium disilicate glass ceramics, zirconium-reinforced glass ceramics, biomaterial properties

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