PubMed · 6387804
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V Masi. 1984. One step ceramic repairs.. https://pubmed.ncbi.nlm.nih.gov/6387804/
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Ideally, a cosmetic restoration should be indistinguishable from the surrounding unrestored dentition. The cosmetic dentist faces the challenging task of creating the restoration using materials that do not possess the light-transmitting properties of natural tooth structures. A thorough knowledge of the physical and physiologic properties of light, color production and perception, and skill in the art of color matching can lead to rewarding success.
The options for correction of unesthetic teeth are numerous; among these treatments, porcelain veneers have received substantial attention from the profession and patients. The increase in dental health awareness and advances in dental materials and technology, such as the acid-etching technique, improved physical properties of composite luting resin, and the use of silane coupling agents, have contributed to the success ceramic veneers enjoy today. However, no single material or technique is without its limitations. This article therefore aims to review the criteria for case selection and the limitations of porcelain veneers in restorative dentistry.
The aim of this investigation was to study the chemical solubility of 3 new low-fusing ceramics (Duceram-LFC, Duceragold and Vita Omega 800) in comparison with a conventional PFM-ceramic (Vita Omega) together with different surface treatments. Additionally, the three-point flexure strengths were measured. Although the test conditions were very stringent in comparison to the standard solubility test, all ceramics comply with ISO/DIS 6872 specifications, and are thus deemed to be well tolerated in the oral environment. Vita Omega demonstrated the lowest chemical solubility. Mechanical polishing of the surfaces of LFC and Duceragold ceramics produced lower solubility results as compared to glazing. Vita Omega and Omega 800 behaved contrarily. After repeated hydrolysis testings Ducera-LFC demonstrated the highest disintegration resistance. The three-point flexure strengths of low-fusing ceramics were generally higher than that of the conventional PFM-ceramic. As opposed to the other ceramic materials tested, the flexure strength of Duceram-LFC increased significantly after hydrolysis testing.