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Evaluation of a 4‐META Porcelain Repair System

 

作者: Robert L. Cooley,   Eugene Y. Tseng,   James G. Evans,  

 

期刊: Journal of Esthetic and Restorative Dentistry  (WILEY Available online 1991)
卷期: Volume 3, issue 1  

页码: 11-13

 

ISSN:1496-4155

 

年代: 1991

 

DOI:10.1111/j.1708-8240.1991.tb00798.x

 

出版商: Blackwell Publishing Ltd

 

数据来源: WILEY

 

摘要:

A recently introduced porcelain repair system utilizing 4‐META (Etch‐Free Primer with C&B‐Metabond) was evaluated for bond strength to porcelain. This system purportedly eliminates hydrofluoric acid‐etching and silane pretreatment. Forty porcelain specimens were prepared and treated with the 4‐META repair system. A resin cylinder was bonded to the treated porcelain surface. Twenty of the specimens were tested after 24 hours while the other 20 were tested after thermocy‐cling (800 cycles at 6° C to 60° C). The mean bond strengths were: 24 hours 17.4 MPa (±4.8), thermocycled 19.1 MPa (±7). Cohesive failure of the porcelain occurred in all of the specimens, both the 24 hour and the thermocycled. These bond strengths compare favorably with or exceed those of other porcelain repair systems tested i

 

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