Clinical fractures of veneered zirconia single crowns
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Data
2013
Autores
Almeida Júnior, Antonio A.
Munõz-Chaves, Oscar Fernando [UNESP]
Galvão, Beatriz Regalado
Adabo, Gelson Luis [UNESP]
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Resumo
Crowns made from an yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP) core with a porcelain veneer have shown high clinical failure rates. Manifestations of clinical failure in veneering ceramic ranges from a single chip to an extended fracture. Core failures are uncommon but usually are catastrophic. This article examines the possible causes of failure in zirconia systems and presents a case report involving the diagnosis and repair of three different types of failure in six 3Y-TZP/porcelain crowns.
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Palavras-chave
Crowns, Dental porcelain, Dental restoration, Dental restoration failure, Human, Zirconium
Como citar
General Dentistry, v. 61, n. 6, p. 17-21, 2013.