[Strength of bi-layer dental ceramic evaluated by MSP testing].
Beijing Da Xue Xue Bao Yi Xue Ban
; 43(6): 891-4, 2011 Dec 18.
Article
en Zh
| MEDLINE
| ID: mdl-22178841
OBJECTIVE: To evaluate strength of bi-layer alumina/Y-TZP specimens, compared with 3-point bending test and to estimate the reliability of MSP testing used in dental ceramics. METHODS: The single-layer/bi-layer alumina/Y-TZP specimens were produced by the clinical methods. Strength of these specimens was determined by MSP testing and 3-point bending test respectively. Fractured pieces of each bi-layer specimen were collected and studied with optical microscope and SEM. RESULTS: The MSP fracture strength was lower than bending strength in all the specimens. The strength of single-layer Y-TZP was the highest and the strength of bi-layer samples was lower than that of the single-layer samples respectively. Delamination and interface destruction were found in bi-layer alumina specimens, and not in bi-layer Y-TZP specimens. CONCLUSION: MSP testing is a convenient and feasible method to evaluate mechanical properties of dental ceramics.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Itrio
/
Circonio
/
Ensayo de Materiales
/
Cerámica
/
Coronas con Frente Estético
/
Óxido de Aluminio
Límite:
Humans
Idioma:
Zh
Revista:
Beijing Da Xue Xue Bao Yi Xue Ban
Asunto de la revista:
MEDICINA
Año:
2011
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
China